{"id":27117,"date":"2026-09-15T19:13:35","date_gmt":"2026-09-15T13:43:35","guid":{"rendered":"https:\/\/qsh.in\/boards\/wbbse\/?p=27117"},"modified":"2026-09-15T19:32:53","modified_gmt":"2026-09-15T14:02:53","slug":"multiple-two-digit-numbers-addition","status":"publish","type":"post","link":"https:\/\/qsh.in\/boards\/wbbse\/mental-math\/multiple-two-digit-numbers-addition\/","title":{"rendered":"\u098f\u0995\u09be\u09a7\u09bf\u0995 \u09e8-\u0985\u0999\u09cd\u0995\u09c7\u09b0 \u09af\u09cb\u0997 (Flash Addition Magic!)"},"content":{"rendered":"<h2>\u098f\u0995\u09be\u09a7\u09bf\u0995 \u09e8-\u0985\u0999\u09cd\u0995\u09c7\u09b0 \u09af\u09cb\u0997: \u09ab\u09cd\u09b2\u09cd\u09af\u09be\u09b6 \u09ab\u09be\u09df\u09be\u09b0\u09ab\u09cd\u09b2\u09be\u0987! \u26a1<\/h2>\n<p>\u098f\u0995\u099f\u09bf \u09ae\u09be\u09df\u09be\u09ac\u09c0 \u09b0\u09be\u09a4\u09c7\u09b0 \u099c\u0999\u09cd\u0997\u09b2\u09c7 \u09a4\u09cb\u09ae\u09be\u0995\u09c7 \u09b8\u09cd\u09ac\u09be\u0997\u09a4\u09ae! \ud83c\udf0c 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\u09af\u09cb\u0997\u09ab\u09b2\u099f\u09bf \u09ae\u09c1\u0996\u09c7 \u098f\u0995\u09ac\u09be\u09b0 \u0989\u099a\u09cd\u099a\u09be\u09b0\u09a3 \u0995\u09b0\u09ac\u09c7, \u098f\u09a4\u09c7 \u09ac\u09cd\u09b0\u09c7\u09a8 \u09b8\u0982\u0996\u09cd\u09af\u09be\u099f\u09bf \u09ad\u09c1\u09b2\u09c7 \u09af\u09be\u09ac\u09c7 \u09a8\u09be\u0964<\/p>\n<h3>\u098f\u09ac\u09be\u09b0 \u09a4\u09cb\u09ae\u09be\u09b0 \u09b8\u09cd\u09aa\u09bf\u09a1 \u0993 \u09ae\u09c7\u09ae\u09b0\u09bf \u099f\u09c7\u09b8\u09cd\u099f! \ud83e\udde0\u2728<\/h3>\n<p>\u09a8\u09bf\u099a\u09c7 \u09a5\u09be\u0995\u09be \u0997\u09c7\u09ae\u099f\u09bf\u09a4\u09c7 \u09a4\u09c1\u09ae\u09bf \u09a8\u09bf\u099c\u09c7\u0987 <strong>\u09b8\u09c7\u099f\u09bf\u0982\u09b8<\/strong> \u09a0\u09bf\u0995 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09ac\u09c7\u0964 \u09a4\u09c1\u09ae\u09bf \u0995\u09df\u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be (\u09e9, \u09ea, \u09eb \u09ac\u09be \u09ec\u099f\u09bf) \u09af\u09cb\u0997 \u0995\u09b0\u09a4\u09c7 \u099a\u09be\u0993 \u098f\u09ac\u0982 \u099c\u09cb\u09a8\u09be\u0995\u09bf \u09aa\u09cb\u0995\u09be\u09b0 \u09b8\u09cd\u09aa\u09bf\u09a1 \u09b2\u09c7\u09ad\u09c7\u09b2 \u0995\u09c7\u09ae\u09a8 \u09b9\u09ac\u09c7 (\u09b8\u09b9\u099c, \u09ae\u09be\u099d\u09be\u09b0\u09bf \u09ac\u09be \u0995\u09a0\u09bf\u09a8) \u09a4\u09be \u09ac\u09c7\u099b\u09c7 \u09a8\u09be\u0993\u0964<\/p>\n<p>\u09b8\u09ac\u0997\u09c1\u09b2\u09cb \u09b8\u0982\u0996\u09cd\u09af\u09be \u09a6\u09c7\u0996\u09be\u09a8\u09cb \u09b9\u09df\u09c7 \u0997\u09c7\u09b2\u09c7 \u0985\u09aa\u09b6\u09a8 \u09a5\u09c7\u0995\u09c7 \u09b8\u09a0\u09bf\u0995 \u0989\u09a4\u09cd\u09a4\u09b0\u099f\u09bf \u09ac\u09c7\u099b\u09c7 \u09a8\u09bf\u09a4\u09c7 \u09b9\u09ac\u09c7\u0964 \u09a6\u09c7\u0996\u09bf \u09a4\u09cb\u09ae\u09be\u09b0 \u09ac\u09cd\u09b0\u09c7\u09a8 \u0995\u09a4\u099f\u09be \u09b8\u09c3\u099c\u09a8\u09b6\u09c0\u09b2 \u098f\u09ac\u0982 \u09ab\u09be\u09b8\u09cd\u099f \u0995\u09be\u099c \u0995\u09b0\u09c7! \u099c\u09cb\u09a8\u09be\u0995\u09bf\u09b0 \u0986\u09b2\u09cb \u09a8\u09bf\u09ad\u09c7 \u09af\u09be\u0993\u09df\u09be\u09b0 \u0986\u0997\u09c7\u0987 \u0989\u09a4\u09cd\u09a4\u09b0 \u09a6\u09be\u0993\u0964 \u099a\u09b2\u09cb, \u0997\u09c7\u09ae \u09b6\u09c1\u09b0\u09c1 \u0995\u09b0\u09cb\u2026<\/p>\n<p><!-- [game_controller] Shortcode will be placed here by the plugin --><\/p>\n<p align=\"center\"><strong><style>#h5g-wrap-27117 { max-width: 800px; width: 100%; margin: 2rem auto; background: #111827; border-radius: 12px; box-shadow: 0 10px 25px rgba(0,0,0,0.15); overflow: hidden; font-family: system-ui, -apple-system, sans-serif; }\n#h5g-wrap-27117 .h5g-toolbar { display: flex; justify-content: space-between; align-items: center; padding: 12px 20px; background: #1f2937; border-bottom: 1px solid #374151; }\n#h5g-wrap-27117 .h5g-title { color: #f3f4f6; font-weight: 600; font-size: 14px; letter-spacing: 0.5px; text-transform: uppercase; }\n#h5g-wrap-27117 .h5g-fs-btn { background: #3b82f6; color: #fff; border: none; padding: 8px 14px; border-radius: 6px; font-size: 13px; font-weight: 600; cursor: pointer; display: flex; align-items: center; gap: 8px; transition: background 0.2s ease; }\n#h5g-wrap-27117 .h5g-fs-btn:hover { background: #2563eb; }\n#h5g-wrap-27117 .h5g-fs-btn svg { width: 16px; height: 16px; fill: currentColor; }\n#h5g-wrap-27117 .h5g-fs-btn.exit-mode { background: #166534; padding: 6px 12px; font-size: 12px; }\n#h5g-wrap-27117 .h5g-fs-btn.exit-mode:hover { background: #14532d; }\n#h5g-wrap-27117 .h5g-iframe-container { width: 100%; height: 75vh; min-height: 550px; max-height: 700px; position: relative; background: #000; }\n#h5g-wrap-27117 iframe { width: 100%; height: 100%; border: none; display: block; }\n@media (max-width: 480px) {\n    #h5g-wrap-27117 .h5g-iframe-container { min-height: 600px; }\n}\n#h5g-wrap-27117:fullscreen { max-width: 100%; width: 100%; height: 100%; margin: 0; border-radius: 0; display: flex; flex-direction: column; }\n#h5g-wrap-27117:fullscreen .h5g-iframe-container { height: 100%; flex-grow: 1; min-height: 0; max-height: none; }\n#h5g-wrap-27117:-webkit-full-screen { max-width: 100%; width: 100%; height: 100%; margin: 0; border-radius: 0; display: flex; flex-direction: column; }\n#h5g-wrap-27117:-webkit-full-screen .h5g-iframe-container { height: 100%; flex-grow: 1; min-height: 0; max-height: none; }\n#h5g-wrap-27117:-ms-fullscreen { max-width: 100%; width: 100%; height: 100%; margin: 0; border-radius: 0; display: flex; flex-direction: column; }\n#h5g-wrap-27117:-ms-fullscreen .h5g-iframe-container { height: 100%; flex-grow: 1; min-height: 0; max-height: none; }<\/style><div id=\"h5g-wrap-27117\" class=\"h5g-wrapper\">  <div class=\"h5g-toolbar\">    <div class=\"h5g-title\">\u098f\u0995\u09be\u09a7\u09bf\u0995 \u09e8-\u0985\u0999\u09cd\u0995\u09c7\u09b0 \u09af\u09cb\u0997 (Flash Addition Magic!)<\/div>    <button id=\"h5g-fs-btn-27117\" class=\"h5g-fs-btn\" type=\"button\" aria-label=\"Toggle fullscreen\">      <svg viewbox=\"0 0 24 24\"><path d=\"M7 14H5v5h5v-2H7v-3zm-2-4h2V7h3V5H5v5zm12 7h-3v2h5v-5h-2v3zM14 5v2h3v3h2V5h-5z\"><\/path><\/svg>      <span>Full Screen<\/span>    <\/button>  <\/div>  <div class=\"h5g-iframe-container\">    <iframe id=\"h5g-iframe-27117\" srcdoc=\"&lt;!DOCTYPE html&gt;&lt;html&gt;&lt;head&gt;&lt;meta charset=&quot;UTF-8&quot;&gt;&lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no&quot;&gt;&lt;base href=&quot;https:\/\/qsh.in\/boards\/wbbse\/&quot;&gt;&lt;style&gt;html, body { width: 100%; height: 100%; margin: 0; padding: 0; background: transparent; touch-action: none; overflow: hidden; -webkit-user-select: none; user-select: none; -webkit-tap-highlight-color: transparent; }&lt;\/style&gt;&lt;style&gt;#sim-root {\r\n    position: relative;\r\n    width: 100%;\r\n    height: 100vh;\r\n    min-height: 600px;\r\n    background-color: #060b19;\r\n    color: #e2e8f0;\r\n    font-family: 'Noto Sans Bengali', system-ui, sans-serif;\r\n    overflow: hidden;\r\n    display: flex;\r\n    flex-direction: column;\r\n    touch-action: manipulation;\r\n    -webkit-tap-highlight-color: transparent;\r\n    user-select: none;\r\n}\r\n\r\n.screen {\r\n    position: absolute;\r\n    top: 0;\r\n    left: 0;\r\n    width: 100%;\r\n    height: 100%;\r\n    display: none;\r\n    flex-direction: column;\r\n    justify-content: center;\r\n    align-items: center;\r\n    background: radial-gradient(circle at center, #0f172a 0%, #020617 100%);\r\n    z-index: 10;\r\n}\r\n\r\n.screen.active {\r\n    display: flex;\r\n}\r\n\r\n#game-screen {\r\n    z-index: 1;\r\n    background: transparent;\r\n}\r\n\r\n.panel {\r\n    background: rgba(15, 23, 42, 0.95);\r\n    border: 2px solid #a855f7;\r\n    border-radius: 16px;\r\n    padding: 2rem;\r\n    max-width: 90%;\r\n    width: 450px;\r\n    text-align: center;\r\n    box-shadow: 0 0 30px rgba(168, 85, 247, 0.3);\r\n    backdrop-filter: blur(10px);\r\n}\r\n\r\n.panel h2 {\r\n    color: #d8b4fe;\r\n    margin-top: 0;\r\n    font-size: clamp(1.8rem, 5vw, 2.2rem);\r\n    text-shadow: 0 0 10px rgba(216, 180, 254, 0.5);\r\n    margin-bottom: 1rem;\r\n}\r\n\r\n.panel p {\r\n    font-size: 1.05rem;\r\n    line-height: 1.6;\r\n    margin-bottom: 1.5rem;\r\n    color: #cbd5e1;\r\n}\r\n\r\n\/* Settings Form Styles *\/\r\n.settings-group {\r\n    background: rgba(0, 0, 0, 0.3);\r\n    padding: 15px;\r\n    border-radius: 10px;\r\n    margin-bottom: 20px;\r\n    border: 1px solid #6b21a8;\r\n}\r\n\r\n.setting-row {\r\n    display: flex;\r\n    flex-direction: column;\r\n    align-items: flex-start;\r\n    margin-bottom: 15px;\r\n}\r\n\r\n.setting-row:last-child {\r\n    margin-bottom: 0;\r\n}\r\n\r\n.setting-row label {\r\n    font-weight: bold;\r\n    color: #c084fc;\r\n    margin-bottom: 5px;\r\n    font-size: 1.1rem;\r\n}\r\n\r\n.styled-select {\r\n    width: 100%;\r\n    padding: 10px 15px;\r\n    border-radius: 8px;\r\n    background: #1e1b4b;\r\n    color: #fff;\r\n    border: 2px solid #9333ea;\r\n    font-size: 1.1rem;\r\n    font-family: inherit;\r\n    cursor: pointer;\r\n    outline: none;\r\n    appearance: none;\r\n    -webkit-appearance: none;\r\n    background-image: url('data:image\/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23c084fc%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E');\r\n    background-repeat: no-repeat;\r\n    background-position: right 15px top 50%;\r\n    background-size: 12px auto;\r\n}\r\n\r\n.styled-select:focus {\r\n    border-color: #d8b4fe;\r\n    box-shadow: 0 0 10px rgba(216, 180, 254, 0.4);\r\n}\r\n\r\n.action-btn {\r\n    background: linear-gradient(45deg, #7e22ce, #9333ea);\r\n    color: #fff;\r\n    border: none;\r\n    padding: 12px 35px;\r\n    font-size: 1.3rem;\r\n    border-radius: 8px;\r\n    cursor: pointer;\r\n    font-weight: bold;\r\n    transition: all 0.2s;\r\n    box-shadow: 0 5px 20px rgba(147, 51, 234, 0.5);\r\n    width: 100%;\r\n}\r\n\r\n.action-btn:active {\r\n    transform: scale(0.95);\r\n    box-shadow: 0 2px 10px rgba(147, 51, 234, 0.5);\r\n}\r\n\r\n\/* HUD *\/\r\n#hud {\r\n    position: absolute;\r\n    top: 0;\r\n    left: 0;\r\n    width: 100%;\r\n    padding: 15px 20px;\r\n    display: flex;\r\n    justify-content: space-between;\r\n    box-sizing: border-box;\r\n    font-size: 1.2rem;\r\n    font-weight: bold;\r\n    color: #d8b4fe;\r\n    z-index: 5;\r\n    background: linear-gradient(to bottom, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0) 100%);\r\n    text-shadow: 2px 2px 4px #000;\r\n}\r\n\r\n#timer-container {\r\n    position: absolute;\r\n    top: 60px;\r\n    left: 50%;\r\n    transform: translateX(-50%);\r\n    width: 80%;\r\n    max-width: 400px;\r\n    height: 10px;\r\n    background: rgba(0,0,0,0.5);\r\n    border-radius: 5px;\r\n    overflow: hidden;\r\n    z-index: 5;\r\n    border: 1px solid #a855f7;\r\n}\r\n\r\n#timer-bar {\r\n    width: 100%;\r\n    height: 100%;\r\n    background: #d8b4fe;\r\n    transition: width 0.1s linear, background-color 0.3s;\r\n}\r\n\r\n\/* Flash Display Area *\/\r\n#flash-display-area {\r\n    position: absolute;\r\n    top: 35%;\r\n    left: 50%;\r\n    transform: translate(-50%, -50%);\r\n    z-index: 5;\r\n    display: flex;\r\n    justify-content: center;\r\n    align-items: center;\r\n    width: 250px;\r\n    height: 250px;\r\n}\r\n\r\n.flash-text {\r\n    font-size: clamp(5rem, 15vw, 8rem);\r\n    font-weight: 900;\r\n    color: #fff;\r\n    text-shadow: 0 0 30px rgba(255, 255, 255, 0.9), 0 0 60px rgba(168, 85, 247, 0.8);\r\n    opacity: 0;\r\n    transform: scale(0.5);\r\n    transition: all 0.1s ease-out;\r\n}\r\n\r\n.flash-text.pop-in {\r\n    opacity: 1;\r\n    transform: scale(1.1);\r\n}\r\n\r\n.flash-text.pop-idle {\r\n    opacity: 1;\r\n    transform: scale(1);\r\n}\r\n\r\n#question-prompt {\r\n    position: absolute;\r\n    top: 50%;\r\n    left: 50%;\r\n    transform: translate(-50%, -50%);\r\n    z-index: 6;\r\n    font-size: clamp(2rem, 5vw, 3rem);\r\n    font-weight: bold;\r\n    color: #fbbf24;\r\n    text-shadow: 0 0 15px rgba(251, 191, 36, 0.8);\r\n    background: rgba(0,0,0,0.6);\r\n    padding: 10px 30px;\r\n    border-radius: 12px;\r\n    border: 2px solid #fbbf24;\r\n    text-align: center;\r\n    width: 90%;\r\n    max-width: 500px;\r\n}\r\n\r\n\/* Canvas *\/\r\n#game-canvas {\r\n    position: absolute;\r\n    top: 0;\r\n    left: 0;\r\n    width: 100%;\r\n    height: 100%;\r\n    z-index: 2;\r\n    background: #020617;\r\n}\r\n\r\n\/* Control Dock *\/\r\n#control-dock {\r\n    position: absolute;\r\n    bottom: 25px;\r\n    left: 50%;\r\n    transform: translateX(-50%);\r\n    width: 95%;\r\n    max-width: 600px;\r\n    display: grid;\r\n    grid-template-columns: repeat(3, 1fr);\r\n    gap: 12px;\r\n    z-index: 10;\r\n    transition: opacity 0.3s ease;\r\n}\r\n\r\n.option-btn {\r\n    background: rgba(30, 27, 75, 0.95);\r\n    border: 2px solid #a855f7;\r\n    color: #ffffff;\r\n    font-size: clamp(1.8rem, 5vw, 2.5rem);\r\n    padding: 20px 0;\r\n    border-radius: 12px;\r\n    cursor: pointer;\r\n    font-weight: bold;\r\n    transition: all 0.1s;\r\n    backdrop-filter: blur(8px);\r\n    box-shadow: 0 6px 15px rgba(0,0,0,0.6);\r\n}\r\n\r\n.option-btn:active {\r\n    background: #a855f7;\r\n    color: #fff;\r\n    transform: scale(0.95);\r\n}\r\n\r\n.option-btn.correct {\r\n    background: #10b981;\r\n    color: #fff;\r\n    border-color: #10b981;\r\n}\r\n\r\n.option-btn.wrong {\r\n    background: #ef4444;\r\n    color: #fff;\r\n    border-color: #ef4444;\r\n    animation: shake 0.3s;\r\n}\r\n\r\n@keyframes shake {\r\n    0%, 100% { transform: translateX(0); }\r\n    25% { transform: translateX(-6px); }\r\n    75% { transform: translateX(6px); }\r\n}&lt;\/style&gt;&lt;\/head&gt;&lt;body&gt;&lt;div id=&quot;game-container&quot; style=&quot;width:100%;height:100%;display:flex;justify-content:center;align-items:center;&quot;&gt;&lt;div id=&quot;sim-root&quot;&gt;\r\n    <!-- Start Screen \/ Settings Panel -->\r\n    &lt;div id=&quot;start-screen&quot; class=&quot;screen active&quot;&gt;\r\n        &lt;div class=&quot;panel&quot;&gt;\r\n            &lt;h2&gt;\u09ab\u09cd\u09b2\u09cd\u09af\u09be\u09b6 \u09ab\u09be\u09df\u09be\u09b0\u09ab\u09cd\u09b2\u09be\u0987 (Flash Memory)&lt;\/h2&gt;\r\n            &lt;p&gt;\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09a8\u09c7 \u099c\u09cb\u09a8\u09be\u0995\u09bf \u09aa\u09cb\u0995\u09be\u09b0 \u09b8\u09be\u09a5\u09c7 \u098f\u0995\u09c7 \u098f\u0995\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be \u09ad\u09c7\u09b8\u09c7 \u0989\u09a0\u09ac\u09c7\u0964 \u09b8\u0982\u0996\u09cd\u09af\u09be\u0997\u09c1\u09b2\u09cb \u09ae\u09a8\u09c7 \u09ae\u09a8\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09cb \u098f\u09ac\u0982 \u09b6\u09c7\u09b7\u09c7 \u09b8\u09a0\u09bf\u0995 \u0989\u09a4\u09cd\u09a4\u09b0 \u09a6\u09be\u0993!&lt;\/p&gt;\r\n            \r\n            &lt;div class=&quot;settings-group&quot;&gt;\r\n                &lt;div class=&quot;setting-row&quot;&gt;\r\n                    &lt;label for=&quot;set-count&quot;&gt;\u0995\u09df\u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be \u09af\u09cb\u0997 \u0995\u09b0\u09ac\u09c7?&lt;\/label&gt;\r\n                    &lt;select id=&quot;set-count&quot; class=&quot;styled-select&quot;&gt;\r\n                        &lt;option value=&quot;3&quot;&gt;\u09e9 \u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be&lt;\/option&gt;\r\n                        &lt;option value=&quot;4&quot; selected&gt;\u09ea \u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be&lt;\/option&gt;\r\n                        &lt;option value=&quot;5&quot;&gt;\u09eb \u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be&lt;\/option&gt;\r\n                        &lt;option value=&quot;6&quot;&gt;\u09ec \u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be&lt;\/option&gt;\r\n                    &lt;\/select&gt;\r\n                &lt;\/div&gt;\r\n                &lt;div class=&quot;setting-row&quot;&gt;\r\n                    &lt;label for=&quot;set-speed&quot;&gt;\u09b8\u09cd\u09aa\u09bf\u09a1 \u09b2\u09c7\u09ad\u09c7\u09b2:&lt;\/label&gt;\r\n                    &lt;select id=&quot;set-speed&quot; class=&quot;styled-select&quot;&gt;\r\n                        &lt;option value=&quot;easy&quot;&gt;\u09b8\u09b9\u099c (\u09ee \u09b8\u09c7\u0995\u09c7\u09a8\u09cd\u09a1 \u0997\u09cd\u09af\u09be\u09aa)&lt;\/option&gt;\r\n                        &lt;option value=&quot;moderate&quot; selected&gt;\u09ae\u09be\u099d\u09be\u09b0\u09bf (\u09ec \u09b8\u09c7\u0995\u09c7\u09a8\u09cd\u09a1 \u0997\u09cd\u09af\u09be\u09aa)&lt;\/option&gt;\r\n                        &lt;option value=&quot;hard&quot;&gt;\u0995\u09a0\u09bf\u09a8 (\u09eb \u09b8\u09c7\u0995\u09c7\u09a8\u09cd\u09a1 \u0997\u09cd\u09af\u09be\u09aa)&lt;\/option&gt;\r\n                    &lt;\/select&gt;\r\n                &lt;\/div&gt;\r\n            &lt;\/div&gt;\r\n\r\n            &lt;button id=&quot;start-btn&quot; class=&quot;action-btn&quot;&gt;\u0997\u09c7\u09ae \u09b6\u09c1\u09b0\u09c1 \u0995\u09b0\u09cb&lt;\/button&gt;\r\n        &lt;\/div&gt;\r\n    &lt;\/div&gt;\r\n\r\n    <!-- Game Screen -->\r\n    &lt;div id=&quot;game-screen&quot; class=&quot;screen&quot;&gt;\r\n        <!-- HUD -->\r\n        &lt;div id=&quot;hud&quot;&gt;\r\n            &lt;div class=&quot;hud-item&quot;&gt;\u09b8\u09cd\u0995\u09cb\u09b0: &lt;span id=&quot;score-display&quot;&gt;\u09e6&lt;\/span&gt;&lt;\/div&gt;\r\n            &lt;div class=&quot;hud-item&quot;&gt;\u09b0\u09be\u0989\u09a8\u09cd\u09a1: &lt;span id=&quot;level-display&quot;&gt;\u09e7&lt;\/span&gt;&lt;\/div&gt;\r\n            &lt;div class=&quot;hud-item&quot;&gt;\u09b2\u09be\u0987\u09ab: &lt;span id=&quot;lives-display&quot;&gt;\u2764\ufe0f\u2764\ufe0f\u2764\ufe0f&lt;\/span&gt;&lt;\/div&gt;\r\n        &lt;\/div&gt;\r\n\r\n        <!-- Timer Bar -->\r\n        &lt;div id=&quot;timer-container&quot; style=&quot;display:none;&quot;&gt;\r\n            &lt;div id=&quot;timer-bar&quot;&gt;&lt;\/div&gt;\r\n        &lt;\/div&gt;\r\n\r\n        <!-- Flash Display Area -->\r\n        &lt;div id=&quot;flash-display-area&quot;&gt;\r\n            &lt;div id=&quot;flash-number&quot; class=&quot;flash-text&quot;&gt;&lt;\/div&gt;\r\n        &lt;\/div&gt;\r\n\r\n        <!-- Question Prompt -->\r\n        &lt;div id=&quot;question-prompt&quot; style=&quot;display: none;&quot;&gt;\r\n            \u09ae\u09cb\u099f \u09af\u09cb\u0997\u09ab\u09b2 \u0995\u09a4 \u09b9\u09b2\u09cb?\r\n        &lt;\/div&gt;\r\n\r\n        <!-- Canvas for Background & Particles -->\r\n        &lt;canvas id=&quot;game-canvas&quot;&gt;&lt;\/canvas&gt;\r\n\r\n        <!-- Controls \/ Numpad Dock (3 Options) -->\r\n        &lt;div id=&quot;control-dock&quot; style=&quot;opacity: 0; pointer-events: none;&quot;&gt;\r\n            &lt;button class=&quot;option-btn&quot; data-index=&quot;0&quot;&gt;\u09e6&lt;\/button&gt;\r\n            &lt;button class=&quot;option-btn&quot; data-index=&quot;1&quot;&gt;\u09e6&lt;\/button&gt;\r\n            &lt;button class=&quot;option-btn&quot; data-index=&quot;2&quot;&gt;\u09e6&lt;\/button&gt;\r\n        &lt;\/div&gt;\r\n    &lt;\/div&gt;\r\n\r\n    <!-- Game Over Screen -->\r\n    &lt;div id=&quot;game-over-screen&quot; class=&quot;screen&quot;&gt;\r\n        &lt;div class=&quot;panel&quot;&gt;\r\n            &lt;h2 id=&quot;end-title&quot;&gt;\u0997\u09c7\u09ae \u0993\u09ad\u09be\u09b0!&lt;\/h2&gt;\r\n            &lt;p id=&quot;end-message&quot;&gt;\u09a4\u09cb\u09ae\u09be\u09b0 \u09ae\u09a8\u09cb\u09af\u09cb\u0997 \u0986\u09b0\u09c7\u0995\u099f\u09c1 \u09ac\u09be\u09dc\u09be\u09a4\u09c7 \u09b9\u09ac\u09c7\u0964&lt;\/p&gt;\r\n            &lt;p&gt;\u09a4\u09cb\u09ae\u09be\u09b0 \u099a\u09c2\u09dc\u09be\u09a8\u09cd\u09a4 \u09b8\u09cd\u0995\u09cb\u09b0: &lt;span id=&quot;final-score&quot;&gt;\u09e6&lt;\/span&gt;&lt;\/p&gt;\r\n            &lt;button id=&quot;restart-btn&quot; class=&quot;action-btn&quot;&gt;\u0986\u09ac\u09be\u09b0 \u0996\u09c7\u09b2\u09cb&lt;\/button&gt;\r\n        &lt;\/div&gt;\r\n    &lt;\/div&gt;\r\n&lt;\/div&gt;&lt;\/div&gt;&lt;script&gt;window.GameController = {\n    saveScore: function(score, time, extraData) {\n        try {\n            window.parent.postMessage({\n                action: 'h5g_save_score',\n                game_id: 27117,\n                score: score,\n                time: time || 0,\n                meta: extraData || {}\n            }, '*');\n        } catch (e) {}\n    },\n    getBestScore: function(callback) {\n        var reqId = 'req_' + Date.now() + '_' + Math.floor(Math.random() * 100000);\n        var done = false;\n        function handler(e) {\n            if (done) return;\n            if (e.data &amp;&amp; e.data.action === 'h5g_best_score' &amp;&amp; e.data.req_id === reqId) {\n                done = true;\n                window.removeEventListener('message', handler);\n                try { callback(e.data.score, e.data.runs); } catch (err) {}\n            }\n        }\n        window.addEventListener('message', handler);\n        try {\n            window.parent.postMessage({ action: 'h5g_get_best', game_id: 27117, req_id: reqId }, '*');\n        } catch (e) {}\n        setTimeout(function() {\n            if (!done) {\n                done = true;\n                window.removeEventListener('message', handler);\n                try { callback(null, 0); } catch (err) {}\n            }\n        }, 2000);\n    }\n};&lt;\/script&gt;&lt;script&gt;(function() {\r\n    'use strict';\r\n\r\n    \/\/ --- Utility: Bengali Numerals ---\r\n    const EN_TO_BN = { '0':'\u09e6', '1':'\u09e7', '2':'\u09e8', '3':'\u09e9', '4':'\u09ea', '5':'\u09eb', '6':'\u09ec', '7':'\u09ed', '8':'\u09ee', '9':'\u09ef' };\r\n    \r\n    function toBengali(num) {\r\n        return num.toString().split('').map(d =&gt; EN_TO_BN[d] || d).join('');\r\n    }\r\n\r\n    \/\/ --- Game State ---\r\n    let state = {\r\n        isPlaying: false,\r\n        score: 0,\r\n        level: 1, \r\n        lives: 3,\r\n        settings: {\r\n            count: 4,\r\n            speedMode: 'moderate',\r\n            showMs: 5000, \r\n            gapMs: 1000,\r\n            answerTime: 15000 \r\n        },\r\n        currentNumbers: [],\r\n        correctSum: 0,\r\n        correctIndex: 0,\r\n        sceneState: 'idle', \r\n        flashIndex: 0,\r\n        flashTimer: 0,\r\n        isNumberVisible: false,\r\n        timeLeft: 0,\r\n        accuracy: { correct: 0, total: 0 }\r\n    };\r\n\r\n    let particles = [];\r\n    let fireflies = [];\r\n    let animPhase = 0;\r\n\r\n    \/\/ --- Audio System ---\r\n    const AudioCtx = window.AudioContext || window.webkitAudioContext;\r\n    let actx;\r\n\r\n    function initAudio() {\r\n        if (!actx) actx = new AudioCtx();\r\n        if (actx.state === 'suspended') actx.resume();\r\n    }\r\n\r\n    function playSound(type) {\r\n        if (!actx) return;\r\n        const osc = actx.createOscillator();\r\n        const gain = actx.createGain();\r\n        osc.connect(gain);\r\n        gain.connect(actx.destination);\r\n        const now = actx.currentTime;\r\n\r\n        if (type === 'pop') {\r\n            osc.type = 'sine';\r\n            osc.frequency.setValueAtTime(800 + (state.flashIndex * 100), now); \r\n            osc.frequency.exponentialRampToValueAtTime(1200, now + 0.1);\r\n            gain.gain.setValueAtTime(0.3, now);\r\n            gain.gain.exponentialRampToValueAtTime(0.01, now + 0.2);\r\n            osc.start(now); osc.stop(now + 0.2);\r\n        } else if (type === 'success') {\r\n            osc.type = 'triangle';\r\n            osc.frequency.setValueAtTime(523.25, now); \r\n            osc.frequency.setValueAtTime(659.25, now + 0.1); \r\n            osc.frequency.setValueAtTime(783.99, now + 0.2); \r\n            gain.gain.setValueAtTime(0.2, now);\r\n            gain.gain.linearRampToValueAtTime(0.2, now + 0.3);\r\n            gain.gain.exponentialRampToValueAtTime(0.01, now + 0.6);\r\n            osc.start(now); osc.stop(now + 0.6);\r\n        } else if (type === 'fail') {\r\n            osc.type = 'sawtooth';\r\n            osc.frequency.setValueAtTime(300, now);\r\n            osc.frequency.exponentialRampToValueAtTime(100, now + 0.4);\r\n            gain.gain.setValueAtTime(0.3, now);\r\n            gain.gain.exponentialRampToValueAtTime(0.01, now + 0.4);\r\n            osc.start(now); osc.stop(now + 0.4);\r\n        } else if (type === 'ready') {\r\n            osc.type = 'square';\r\n            osc.frequency.setValueAtTime(600, now);\r\n            gain.gain.setValueAtTime(0.1, now);\r\n            gain.gain.linearRampToValueAtTime(0.01, now + 0.3);\r\n            osc.start(now); osc.stop(now + 0.3);\r\n        }\r\n    }\r\n\r\n    function announce(text) {\r\n        if ('speechSynthesis' in window) {\r\n            window.speechSynthesis.cancel();\r\n            const msg = new SpeechSynthesisUtterance(text);\r\n            msg.rate = 1.3; msg.pitch = 1.1; msg.lang = 'bn-IN'; \r\n            window.speechSynthesis.speak(msg);\r\n        }\r\n    }\r\n\r\n    \/\/ --- Canvas Rendering (Vector Art) ---\r\n    const canvas = document.getElementById('game-canvas');\r\n    const ctx = canvas.getContext('2d');\r\n    let animationId;\r\n\r\n    function resizeCanvas() {\r\n        const dpr = window.devicePixelRatio || 1;\r\n        const rect = canvas.parentElement.getBoundingClientRect();\r\n        canvas.width = rect.width * dpr;\r\n        canvas.height = rect.height * dpr;\r\n        ctx.scale(dpr, dpr);\r\n        canvas.style.width = `${rect.width}px`;\r\n        canvas.style.height = `${rect.height}px`;\r\n    }\r\n\r\n    function initBackgroundElements(w, h) {\r\n        fireflies = [];\r\n        for(let i=0; i&lt;40; i++) {\r\n            fireflies.push({\r\n                x: Math.random() * w,\r\n                y: Math.random() * h,\r\n                s: Math.random() * 3 + 1,\r\n                vx: (Math.random() - 0.5) * 0.5,\r\n                vy: (Math.random() - 0.5) * 0.5,\r\n                phase: Math.random() * Math.PI * 2\r\n            });\r\n        }\r\n    }\r\n\r\n    function createSparks(x, y, color) {\r\n        for (let i = 0; i &lt; 30; i++) {\r\n            particles.push({\r\n                x: x, y: y,\r\n                vx: (Math.random() - 0.5) * 12,\r\n                vy: (Math.random() - 0.5) * 12,\r\n                size: Math.random() * 6 + 3,\r\n                color: color,\r\n                life: 1.0,\r\n                decay: 0.02 + Math.random() * 0.03\r\n            });\r\n        }\r\n    }\r\n\r\n    function drawScene() {\r\n        const w = canvas.width \/ (window.devicePixelRatio || 1);\r\n        const h = canvas.height \/ (window.devicePixelRatio || 1);\r\n        \r\n        ctx.clearRect(0, 0, w, h);\r\n\r\n        ctx.fillStyle = '#0f172a'; \r\n        ctx.fillRect(0, 0, w, h);\r\n\r\n        ctx.fillStyle = '#020617';\r\n        for(let i=0; i&lt;w; i+=100) {\r\n            ctx.beginPath();\r\n            ctx.moveTo(i, h);\r\n            ctx.lineTo(i+10, h*0.2 + Math.random()*50);\r\n            ctx.lineTo(i+20, h);\r\n            ctx.fill();\r\n        }\r\n\r\n        fireflies.forEach(f =&gt; {\r\n            f.x += f.vx; f.y += f.vy;\r\n            f.phase += 0.05;\r\n            if(f.x &lt; 0) f.x = w; if(f.x &gt; w) f.x = 0;\r\n            if(f.y &lt; 0) f.y = h; if(f.y &gt; h) f.y = 0;\r\n\r\n            const alpha = 0.3 + Math.sin(f.phase) * 0.3;\r\n            ctx.fillStyle = `rgba(168, 85, 247, ${alpha})`;\r\n            ctx.shadowBlur = 10; ctx.shadowColor = '#a855f7';\r\n            ctx.beginPath(); ctx.arc(f.x, f.y, f.s, 0, Math.PI*2); ctx.fill();\r\n            ctx.shadowBlur = 0;\r\n        });\r\n\r\n        particles.forEach(p =&gt; {\r\n            ctx.globalAlpha = p.life;\r\n            ctx.fillStyle = p.color;\r\n            ctx.beginPath(); ctx.arc(p.x, p.y, p.size, 0, Math.PI*2); ctx.fill();\r\n            p.x += p.vx; p.y += p.vy; p.life -= p.decay;\r\n        });\r\n        ctx.globalAlpha = 1.0;\r\n        particles = particles.filter(p =&gt; p.life &gt; 0);\r\n    }\r\n\r\n    \/\/ --- Main Game Loop ---\r\n    function gameLoop(timestamp) {\r\n        if (!state.isPlaying) return;\r\n        \r\n        if (!state.lastTime) state.lastTime = timestamp;\r\n        const dt = timestamp - state.lastTime;\r\n        state.lastTime = timestamp;\r\n\r\n        if (state.sceneState === 'flashing') {\r\n            state.flashTimer -= dt;\r\n            const numEl = document.getElementById('flash-number');\r\n\r\n            if (state.flashTimer &lt;= 0) {\r\n                if (state.isNumberVisible) {\r\n                    \/\/ Turn OFF\r\n                    state.isNumberVisible = false;\r\n                    numEl.classList.remove('pop-in');\r\n                    numEl.classList.add('pop-idle');\r\n                    \r\n                    setTimeout(() =&gt; { numEl.innerText = ''; }, 100); \r\n                    \r\n                    state.flashTimer = state.settings.gapMs;\r\n                    state.flashIndex++;\r\n\r\n                    if (state.flashIndex &gt;= state.currentNumbers.length) {\r\n                        state.sceneState = 'answering';\r\n                        state.timeLeft = state.settings.answerTime;\r\n                        \r\n                        setTimeout(() =&gt; {\r\n                            playSound('ready');\r\n                            document.getElementById('question-prompt').style.display = 'block';\r\n                            const dock = document.getElementById('control-dock');\r\n                            dock.style.opacity = '1';\r\n                            dock.style.pointerEvents = 'auto';\r\n                            document.getElementById('timer-container').style.display = 'flex';\r\n                        }, 500);\r\n                    }\r\n                } else {\r\n                    \/\/ Turn ON next number\r\n                    state.isNumberVisible = true;\r\n                    numEl.innerText = toBengali(state.currentNumbers[state.flashIndex]);\r\n                    \r\n                    numEl.style.animation = 'none';\r\n                    numEl.offsetHeight; \r\n                    numEl.style.animation = null; \r\n                    \r\n                    numEl.classList.remove('pop-idle');\r\n                    numEl.classList.add('pop-in');\r\n                    \r\n                    playSound('pop');\r\n                    createSparks(canvas.width\/(2 * window.devicePixelRatio || 1), canvas.height\/(2.5 * window.devicePixelRatio || 1), '#d8b4fe');\r\n                    \r\n                    state.flashTimer = state.settings.showMs;\r\n                }\r\n            }\r\n        } else if (state.sceneState === 'answering') {\r\n            state.timeLeft -= dt;\r\n            const timerBar = document.getElementById('timer-bar');\r\n            const pct = Math.max(0, (state.timeLeft \/ state.settings.answerTime) * 100);\r\n            timerBar.style.width = `${pct}%`;\r\n            \r\n            if (pct &lt; 30) timerBar.style.backgroundColor = '#ef4444';\r\n            else timerBar.style.backgroundColor = '#d8b4fe';\r\n\r\n            if (state.timeLeft &lt;= 0) {\r\n                handleAnswer(-1); \r\n            }\r\n        }\r\n\r\n        drawScene();\r\n        animationId = requestAnimationFrame(gameLoop);\r\n    }\r\n\r\n    \/\/ --- Game Logic ---\r\n    function parseSettings() {\r\n        const countSelect = document.getElementById('set-count');\r\n        const speedSelect = document.getElementById('set-speed');\r\n        \r\n        state.settings.count = parseInt(countSelect.value);\r\n        state.settings.speedMode = speedSelect.value;\r\n\r\n        if (state.settings.speedMode === 'easy') {\r\n            state.settings.showMs = 7000;\r\n            state.settings.gapMs = 1000; \r\n        } else if (state.settings.speedMode === 'moderate') {\r\n            state.settings.showMs = 5000;\r\n            state.settings.gapMs = 1000; \r\n        } else if (state.settings.speedMode === 'hard') {\r\n            state.settings.showMs = 4000;\r\n            state.settings.gapMs = 1000; \r\n        }\r\n    }\r\n\r\n    function generateProblem() {\r\n        document.getElementById('control-dock').style.opacity = '0';\r\n        document.getElementById('control-dock').style.pointerEvents = 'none';\r\n        document.getElementById('question-prompt').style.display = 'none';\r\n        document.getElementById('timer-container').style.display = 'none';\r\n\r\n        state.currentNumbers = [];\r\n        let sum = 0;\r\n        for (let i = 0; i &lt; state.settings.count; i++) {\r\n            const num = Math.floor(Math.random() * 89) + 11;\r\n            state.currentNumbers.push(num);\r\n            sum += num;\r\n        }\r\n        \r\n        state.correctSum = sum;\r\n\r\n        let wrong1 = sum + 10; \r\n        let wrong2 = sum - 10;\r\n        \r\n        if (Math.random() &gt; 0.5) wrong1 = sum + 20;\r\n        if (wrong2 &lt;= 0 || Math.random() &gt; 0.5) wrong2 = sum + Math.floor(Math.random()*9) + 1; \r\n\r\n        let options = [sum, wrong1, wrong2];\r\n        if(options[0] === options[1]) options[1] += 10;\r\n        if(options[0] === options[2] || options[1] === options[2]) options[2] += 5;\r\n\r\n        options.sort(() =&gt; Math.random() - 0.5);\r\n        state.correctIndex = options.indexOf(sum);\r\n\r\n        const btns = document.querySelectorAll('.option-btn');\r\n        btns.forEach((btn, idx) =&gt; {\r\n            if(idx &lt; 3) {\r\n                btn.innerText = toBengali(options[idx]);\r\n                btn.className = 'option-btn'; \r\n            }\r\n        });\r\n\r\n        state.flashIndex = 0;\r\n        state.isNumberVisible = false;\r\n        state.flashTimer = 1000; \r\n        state.sceneState = 'flashing';\r\n        animPhase = 0;\r\n    }\r\n\r\n    function handleAnswer(selectedIndex) {\r\n        if (state.sceneState !== 'answering') return;\r\n        state.accuracy.total++;\r\n        state.sceneState = 'result'; \r\n\r\n        const isCorrect = selectedIndex === state.correctIndex;\r\n        const btns = document.querySelectorAll('.option-btn');\r\n        \r\n        if (selectedIndex &gt;= 0) {\r\n            btns[selectedIndex].classList.add(isCorrect ? 'correct' : 'wrong');\r\n        }\r\n\r\n        const w = canvas.width \/ (window.devicePixelRatio || 1);\r\n        const h = canvas.height \/ (window.devicePixelRatio || 1);\r\n\r\n        if (isCorrect) {\r\n            state.accuracy.correct++;\r\n            \r\n            let diffMult = state.settings.speedMode === 'hard' ? 3 : (state.settings.speedMode === 'moderate' ? 2 : 1);\r\n            let countMult = state.settings.count - 2; \r\n            let timeBonus = Math.ceil(state.timeLeft \/ 1000);\r\n            \r\n            state.score += (10 * diffMult * countMult) + timeBonus;\r\n            state.level++;\r\n            \r\n            playSound('success');\r\n            createSparks(w\/2, h\/2, '#10b981');\r\n            createSparks(w\/2 - 50, h\/2, '#10b981');\r\n            createSparks(w\/2 + 50, h\/2, '#10b981');\r\n            \r\n            announce(&quot;\u0985\u09b8\u09be\u09a7\u09be\u09b0\u09a3! \u09b8\u09a0\u09bf\u0995 \u09af\u09cb\u0997\u09ab\u09b2\u0964&quot;);\r\n            \r\n            document.getElementById('score-display').innerText = toBengali(state.score);\r\n            document.getElementById('level-display').innerText = toBengali(state.level);\r\n            \r\n            setTimeout(generateProblem, 2500);\r\n\r\n        } else {\r\n            state.lives--;\r\n            updateLivesUI();\r\n            \r\n            playSound('fail');\r\n            announce(&quot;\u0989\u09ab! \u098f\u0995\u099f\u09c1 \u09ad\u09c1\u09b2 \u09b9\u09b2\u09cb\u0964&quot;);\r\n            \r\n            if (state.correctIndex &gt;= 0) {\r\n                btns[state.correctIndex].classList.add('correct');\r\n            }\r\n\r\n            setTimeout(() =&gt; {\r\n                if (state.lives &gt; 0) {\r\n                    generateProblem();\r\n                } else {\r\n                    endGame();\r\n                }\r\n            }, 2500);\r\n        }\r\n    }\r\n\r\n    function updateLivesUI() {\r\n        let hearts = '';\r\n        for(let i=0; i&lt;state.lives; i++) hearts += '\u2764\ufe0f';\r\n        document.getElementById('lives-display').innerText = hearts || '\ud83d\udc94';\r\n    }\r\n\r\n    function startGame() {\r\n        initAudio();\r\n        parseSettings();\r\n        \r\n        state.isPlaying = true;\r\n        state.score = 0;\r\n        state.level = 1;\r\n        state.lives = 3;\r\n        state.accuracy = { correct: 0, total: 0 };\r\n        \r\n        updateLivesUI();\r\n        document.getElementById('score-display').innerText = toBengali(state.score);\r\n        document.getElementById('level-display').innerText = toBengali(state.level);\r\n        \r\n        document.querySelectorAll('.screen').forEach(s =&gt; s.classList.remove('active'));\r\n        document.getElementById('game-screen').classList.add('active');\r\n        \r\n        resizeCanvas();\r\n        initBackgroundElements(canvas.width, canvas.height);\r\n        \r\n        generateProblem();\r\n        announce(&quot;\u0996\u09c7\u09df\u09be\u09b2 \u0995\u09b0\u09cb, \u09b8\u0982\u0996\u09cd\u09af\u09be\u0997\u09c1\u09b2\u09cb \u0986\u09b8\u099b\u09c7!&quot;);\r\n        \r\n        if (!animationId) animationId = requestAnimationFrame(gameLoop);\r\n    }\r\n\r\n    function endGame() {\r\n        state.isPlaying = false;\r\n        cancelAnimationFrame(animationId);\r\n        animationId = null;\r\n        \r\n        document.querySelectorAll('.screen').forEach(s =&gt; s.classList.remove('active'));\r\n        document.getElementById('game-over-screen').classList.add('active');\r\n        document.getElementById('final-score').innerText = toBengali(state.score);\r\n        \r\n        if (window.GameController &amp;&amp; typeof window.GameController.saveScore === 'function') {\r\n            const acc = state.accuracy.total &gt; 0 ? Math.round((state.accuracy.correct \/ state.accuracy.total) * 100) : 0;\r\n            window.GameController.saveScore(state.score, state.level * 10, { level: state.level, accuracy: acc, settings: state.settings });\r\n        }\r\n    }\r\n\r\n    \/\/ --- Event Listeners ---\r\n    document.getElementById('start-btn').addEventListener('pointerdown', startGame);\r\n    document.getElementById('restart-btn').addEventListener('pointerdown', () =&gt; {\r\n        document.querySelectorAll('.screen').forEach(s =&gt; s.classList.remove('active'));\r\n        document.getElementById('start-screen').classList.add('active');\r\n    });\r\n    \r\n    document.querySelectorAll('.option-btn').forEach(btn =&gt; {\r\n        btn.addEventListener('pointerdown', function(e) {\r\n            e.preventDefault();\r\n            const idx = parseInt(this.getAttribute('data-index'));\r\n            handleAnswer(idx);\r\n        });\r\n    });\r\n\r\n    window.addEventListener('resize', () =&gt; {\r\n   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btn.innerHTML = svgContract + ' <span>Exit';\n        } else {\n            btn.classList.remove('exit-mode');\n            btn.innerHTML = svgExpand + ' <span>Full Screen';\n        }\n    }\n\n    document.addEventListener('fullscreenchange', syncButton);\n    document.addEventListener('webkitfullscreenchange', syncButton);\n    document.addEventListener('MSFullscreenChange', syncButton);\n\n    \/* ---- Global listener: added once per page ---- *\/\n    if (!window.h5gListenerAdded) {\n        window.h5gListenerAdded = true;\n\n        function isTrustedFrame(src) {\n            var frames = document.querySelectorAll('iframe[id^=\"h5g-iframe-\"]');\n            for (var i = 0; i < frames.length; i++) {\n                if (frames[i].contentWindow === src) return true;\n            }\n            return false;\n        }\n\n        function readScores() {\n            try { return JSON.parse(localStorage.getItem('h5g_user_scores') || '{}'); }\n            catch (e) { return {}; }\n        }\n\n        function writeScores(obj) {\n            try { localStorage.setItem('h5g_user_scores', JSON.stringify(obj)); }\n            catch (e) {}\n        }\n\n        \/\/ Migrate flat\/old entries -> { last, best, runs }\n        function normalize(entry) {\n            if (!entry) return { last: null, best: null, runs: 0 };\n            if (entry.last !== undefined || entry.best !== undefined) return entry;\n            return { last: entry, best: entry, runs: 1 };\n        }\n\n        window.addEventListener('message', function(event) {\n            if (!event.data || !event.data.action) return;\n            if (!isTrustedFrame(event.source)) return;\n\n            var action = event.data.action;\n            var gid    = String(event.data.game_id);\n\n            if (action === 'h5g_save_score') {\n                var store = readScores();\n                var entry = normalize(store[gid]);\n                var payload = {\n                    score: Number(event.data.score) || 0,\n                    time: Number(event.data.time) || 0,\n                    meta: event.data.meta || {},\n                    saved_at: new Date().toISOString()\n                };\n                entry.last = payload;\n                entry.runs = (entry.runs || 0) + 1;\n                if (!entry.best || payload.score > Number(entry.best.score)) {\n                    entry.best = payload;\n                }\n                store[gid] = entry;\n                writeScores(store);\n\n                try {\n                    event.source.postMessage({\n                        action: 'h5g_score_saved',\n                        game_id: gid,\n                        is_best: entry.best === payload,\n                        best: entry.best.score\n                    }, '*');\n                } catch (e) {}\n\n            } else if (action === 'h5g_get_best') {\n                var store2 = readScores();\n                var e2 = normalize(store2[gid]);\n                try {\n                    event.source.postMessage({\n                        action: 'h5g_best_score',\n                        req_id: event.data.req_id,\n                        game_id: gid,\n                        score: e2.best ? e2.best.score : null,\n                        runs: e2.runs || 0\n                    }, '*');\n                } catch (e) {}\n            }\n        });\n    }\n})();<\/script><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u098f\u0995\u09be\u09a7\u09bf\u0995 \u09e8-\u0985\u0999\u09cd\u0995\u09c7\u09b0 \u09af\u09cb\u0997: \u09ab\u09cd\u09b2\u09cd\u09af\u09be\u09b6 \u09ab\u09be\u09df\u09be\u09b0\u09ab\u09cd\u09b2\u09be\u0987! \u26a1 \u098f\u0995\u099f\u09bf \u09ae\u09be\u09df\u09be\u09ac\u09c0 \u09b0\u09be\u09a4\u09c7\u09b0 \u099c\u0999\u09cd\u0997\u09b2\u09c7 \u09a4\u09cb\u09ae\u09be\u0995\u09c7 \u09b8\u09cd\u09ac\u09be\u0997\u09a4\u09ae! \ud83c\udf0c \u0986\u099c \u0986\u09ae\u09b0\u09be \u0995\u09cb\u09a8\u09cb \u09b8\u09be\u09a7\u09be\u09b0\u09a3 \u0985\u0982\u0995 \u0995\u09b0\u09ac \u09a8\u09be, \u0986\u099c \u0986\u09ae\u09b0\u09be \u0996\u09c7\u09b2\u09ac \u099c\u09be\u09a6\u09c1\u0995\u09b0\u09c0 \u099c\u09cb\u09a8\u09be\u0995\u09bf \u09aa\u09cb\u0995\u09be \u09ac\u09be \u2018\u09ab\u09cd\u09b2\u09cd\u09af\u09be\u09b6 \u09ab\u09be\u09df\u09be\u09b0\u09ab\u09cd\u09b2\u09be\u0987\u2019-\u098f\u09b0 \u09b8\u09be\u09a5\u09c7\u0964 \u098f\u0987 \u099c\u09cb\u09a8\u09be\u0995\u09bf\u0997\u09c1\u09b2\u09cb \u0985\u09a8\u09cd\u09a7\u0995\u09be\u09b0\u09c7\u09b0 \u09ae\u09a7\u09cd\u09af\u09c7 \u09b9\u09a0\u09be\u09ce \u0995\u09b0\u09c7 \u098f\u0995\u09c7\u0995\u099f\u09bf \u09e8-\u0985\u0999\u09cd\u0995\u09c7\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be \u09a8\u09bf\u09df\u09c7 \u099c\u09cd\u09ac\u09b2\u09c7 \u0989\u09a0\u09ac\u09c7 \u098f\u09ac\u0982 \u09aa\u09b0\u0995\u09cd\u09b7\u09a3\u09c7\u0987 \u09a8\u09bf\u09ad\u09c7 \u09af\u09be\u09ac\u09c7\u0964 \u09a4\u09cb\u09ae\u09be\u09b0 \u0995\u09be\u099c \u09b9\u09b2\u09cb \u09b8\u0982\u0996\u09cd\u09af\u09be\u0997\u09c1\u09b2\u09cb \u09ae\u09bf\u09b2\u09bf\u09df\u09c7 \u09af\u09be\u0993\u09df\u09be\u09b0 \u0986\u0997\u09c7\u0987 \u09aa\u09b0 \u09aa\u09b0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":["post-27117","post","type-post","status-publish","format-standard","hentry","category-mental-math-tricks"],"_links":{"self":[{"href":"https:\/\/qsh.in\/boards\/wbbse\/wp-json\/wp\/v2\/posts\/27117","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qsh.in\/boards\/wbbse\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qsh.in\/boards\/wbbse\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qsh.in\/boards\/wbbse\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qsh.in\/boards\/wbbse\/wp-json\/wp\/v2\/comments?post=27117"}],"version-history":[{"count":3,"href":"https:\/\/qsh.in\/boards\/wbbse\/wp-json\/wp\/v2\/posts\/27117\/revisions"}],"predecessor-version":[{"id":27120,"href":"https:\/\/qsh.in\/boards\/wbbse\/wp-json\/wp\/v2\/posts\/27117\/revisions\/27120"}],"wp:attachment":[{"href":"https:\/\/qsh.in\/boards\/wbbse\/wp-json\/wp\/v2\/media?parent=27117"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qsh.in\/boards\/wbbse\/wp-json\/wp\/v2\/categories?post=27117"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qsh.in\/boards\/wbbse\/wp-json\/wp\/v2\/tags?post=27117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}