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3</head><body><div id="header"><button id="menuButton" type="button"><img src="/static/menu.svg" alt="Menu"></button><h1>Help</h1><div id="sideMenu" inert><img id="installBtn" src="/static/install_pwa.svg" alt="Install" title="Install"><div class="menu">About<span class="tooltiptext">Info and support</span></div><div class="nav"><a href="/about/help">Help</a><a href="mailto:[email protected]?subject=Comments or questions about Sudoku Spoiler" target="_blank">Contact</a><a href="/donate/">Donate</a><a href="/about/privacy_policy">Privacy Policy</a></div><div class="menu">Sudoku<span class="tooltiptext">Regular Sudoku<br>Alphabet Sudoku<br>Wordoku<br>Hexadoku</span></div><div class="nav"><a href="/sudoku/6">6x6</a><a href="/sudoku/8">8x8</a><a href="/sudoku/9">9x9</a><a href="/sudoku/10">10x10</a><a href="/sudoku/12">12x12</a><a href="/sudoku/14">14x14</a><a href="/sudoku/15">15x15</a><a href="/sudoku/16">16x16</a><a href="/sudoku/18">18x18</a><a href="/sudoku/20">20x20</a><a href="/sudoku/21">21x21</a><a href="/sudoku/22">22x22</a><a href="/sudoku/24">24x24</a><a href="/sudoku/25">25x25</a></div><div class="menu">Overlapping Sudoku<span class="tooltiptext">Twodoku<br>Doubledoku<br>Samurai Sudoku<br>Gattai</span></div><div class="nav"><a href="/twodoku/9/3x3">Twodoku 3x3 overlap</a><a href="/twodoku/9/6x3">Twodoku 6x3 overlap</a><a href="/twodoku/9/6x6">Twodoku 6x6 overlap</a><a href="/samuraisudoku/9/3x3">Samurai Sudoku</a></div><div class="menu">Sudoku X<span class="tooltiptext">Diagonal Sudoku</span></div><div class="nav"><a href="/sudokux/6">6x6</a><a href="/sudokux/8">8x8</a><a href="/sudokux/9">9x9</a><a href="/sudokux/10">10x10</a><a href="/sudokux/12">12x12</a><a href="/sudokux/14">14x14</a><a href="/sudokux/15">15x15</a><a href="/sudokux/16">16x16</a></div><div class="menu">Irregular Sudoku<span class="tooltiptext">Jigsaw Sudoku<br>Chaos Sudoku<br>Nonomino Sudoku<br>Toroidal Sudoku</span></div><div class="nav"><a href="/irregularsudoku/5">5x5</a><a href="/irregularsudoku/6">6x6</a><a href="/irregularsudoku/7">7x7</a><a href="/irregularsudoku/8">8x8</a><a href="/irregularsudoku/9">9x9</a><a href="/irregularsudoku/10">10x10</a><a href="/irregularsudoku/11">11x11</a><a href="/irregularsudoku/12">12x12</a><a href="/irregularsudoku/16">16x16</a></div><div class="menu">Irregular Sudoku X<span class="tooltiptext">Jigsaw Sudoku X<br>Chaos Sudoku X<br>Nonomino Sudoku X<br>Toroidal Sudoku X</span></div><div class="nav"><a href="/irregularsudokux/5">5x5</a><a href="/irregularsudokux/6">6x6</a><a href="/irregularsudokux/7">7x7</a><a href="/irregularsudokux/8">8x8</a><a href="/irregularsudokux/9">9x9</a><a href="/irregularsudokux/10">10x10</a></div><div class="menu"> Hyper Sudoku<span class="tooltiptext">NRC Sudoku<br>Windoku</span></div><div class="nav"><a href="/hypersudoku/9">9x9</a><a href="/hypersudoku/16">16x16</a></div><div class="menu">Hyper Sudoku X<span class="tooltiptext">Windoku X</span></div><div class="nav"><a href="/hypersudokux/9">9x9</a></div><div class="menu">Extra Region Sudoku<span class="tooltiptext">Girandola Sudoku<br>Center Dot Sudoku<br>Asteriks Sudoku<br>Percent Sudoku<br>NU Hyper Sudoku</span></div><div class="nav"><a href="/regionsudoku/6/2">2 regions 6x6</a><a href="/regionsudoku/9/1">1 region 9x9</a><a href="/regionsudoku/9/2">2 regions 9x9</a><a href="/regionsudoku/9/3">3 regions 9x9</a><a href="/regionsudoku/9/4">4 regions 9x9</a><a href="/regionsudoku/16/5">5 regions 16x16</a><a href="/regionsudoku/16/6">6 regions 16x16</a></div><div class="menu">Odd-Even Sudoku<span class="tooltiptext">Sudoku Tanto</span></div><div class="nav"><a href="/oddevensudoku/6">6x6</a><a href="/oddevensudoku/9">9x9</a></div><div class="menu">Offset Sudoku<span class="tooltiptext">Disjoint Groups Sudoku<br>DG Sudoku</span></div><div class="nav"><a href="/offsetsudoku/9">9x9</a></div><div class="menu">S-doku<span class="tooltiptext">Steenhuis Sudoku</span></div><div class="nav"><a href="/sdoku/9">9x9</a></div></div></div><main id="content"><div id="helpSearchBox"><svg viewbox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><circle cx="10.5" cy="10.5" r="7.5"/><line x1="16" y1="16" x2="22" y2="22"/></svg><input type="text" id="helpSearch" placeholder="Search help topics..." autocomplete="off"></div><h3 class="help-heading">General</h3><ul class="help-topics"><li><a href="/about/help/not_listed">Can't find what you're looking for?</a></li><li><a href="/about/help/status_messages">Status messages</a></li><li><a href="/about/help/sudoku_types">What Sudoku types are supported?</a></li><li><a href="/about/help/usable_charsets">Which characters can I use?</a></li><li><a href="/about/help/install_app">How do I install the app?</a></li><li><a href="/about/help/ad_free">What do I get if I donate?</a></li></ul><h3 class="help-heading">Sudoku Solver</h3><ul class="help-topics"><li><a href="/about/help/solve_sudoku">How do I solve a Sudoku?</a></li><li><a href="/about/help/touch_keyboard">How do I enter letters?</a></li><li><a href="/about/help/no_solutions">Why does my puzzle have no solutions?</a></li><li><a href="/about/help/multiple_solutions">Why does my puzzle have multiple solutions?</a></li><li><a href="/about/help/drag_and_drop">How do I use drag and drop?</a></li></ul><h3 class="help-heading">Sudoku Scanner</h3><ul class="help-topics"><li><a href="/about/help/scan_sudoku">How do I scan a Sudoku?</a></li><li><a href="/about/help/upload_sudoku">How do I upload a Sudoku image?</a></li><li><a href="/about/help/scan_handwritten">Can I scan handwritten Sudoku?</a></li></ul></main></body></html>