Javascript, HTML, CSS Code
<html> <head> <script type="text/javascript"> window.addEventListener('error', function(event) { var message = JSON.parse(JSON.stringify(event.message)); var source = event.filename; var lineno = event.lineno; var colno = event.colno; var error = event.error; window.parent.postMessage({ type: 'iframeError', details: { message: message, source: source, lineno: lineno, colno: colno, error: error ? error.stack : '' } }, '*'); }); window.addEventListener('unhandledrejection', function(event) { window.parent.postMessage({ type: 'iframePromiseRejection', details: { reason: event.reason } }, '*'); }); </script> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width,initial-scale=1"> <title>Sudoku Solver</title> <meta name="description" content="A fun and colorful Sudoku solver web app"> <meta name="keywords" content="sudoku, solver, game, puzzle"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script> <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous"> <link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet"> <link href='https://fonts.googleapis.com/css?family=Lobster' rel='stylesheet'> <link href='https://fonts.googleapis.com/css?family=Fira+Sans:400,700' rel='stylesheet'> <!-- Built-In Functions for Apps --> <script type="text/javascript"> var localStoragePrefix = "ct-168116765483934"; var lastSave = 0; function saveLocal(data) { if (Date.now() - lastSave < 1000) { return; } let cookie = localStoragePrefix + "=" + JSON.stringify(data) + "; path=" + window.location.pathname + "'; SameSite=Strict"; cookie += "; expires=" + new Date(Date.now() + 1000 * 60 * 60 * 24 * 365 * 1000).toUTCString(); document.cookie = cookie; lastSave = Date.now(); } function loadLocal() { var cookiePrefix = localStoragePrefix + "="; var cookieStart = document.cookie.indexOf(cookiePrefix); if (cookieStart > -1) { let cookieEnd = document.cookie.indexOf(";", cookieStart); if (cookieEnd == -1) { cookieEnd = document.cookie.length; } var cookieData = document.cookie.substring(cookieStart + cookiePrefix.length, cookieEnd); return JSON.parse(cookieData); } } </script> <script type="text/javascript"> function isSafe(board, row, col, num) { for (let i = 0; i < 9; i++) { if (board[row][i] == num || board[i][col] == num) { return false; } } let startRow = row - row % 3; let startCol = col - col % 3; for (let i = 0; i < 3; i++) { for (let j = 0; j < 3; j++) { if (board[i + startRow][j + startCol] == num) { return false; } } } return true; } function solveSudoku(board, row, col) { if (row == 8 && col == 9) { return true; } if (col == 9) { row++; col = 0; } if (board[row][col] != 0) { return solveSudoku(board, row, col + 1); } for (let num = 1; num <= 9; num++) { if (isSafe(board, row, col, num)) { board[row][col] = num; if (solveSudoku(board, row, col + 1)) { return true; } } board[row][col] = 0; } return false; } function getInput() { let board = []; for (let i = 0; i < 9; i++) { let row = []; for (let j = 0; j < 9; j++) { row.push(parseInt($("#cell-" + i + "-" + j).val()) || 0); } board.push(row); } return board; } function setOutput(board) { for (let i = 0; i < 9; i++) { for (let j = 0; j < 9; j++) { $("#cell-" + i + "-" + j).val(board[i][j]); } } } $(document).ready(function() { $("#solve-btn").click(function() { let board = getInput(); if (solveSudoku(board, 0, 0)) { setOutput(board); } else { alert("No solution exists for this puzzle."); } }); $("#clear-btn").click(function() { $("input").val(""); }); }); </script> <style> body { font-family: 'Fira Sans', sans-serif; background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%); } #main-container { max-width: 600px; margin-top: 40px; } h1 { font-family: 'Lobster', cursive; text-align: center; } .sudoku-board { border: 3px solid #4b4e6d; display: grid; grid-gap: 3px; grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(3, 1fr); width: 100%; } .sudoku-block { border: 1px solid #4b4e6d; display: grid; grid-gap: 1px; grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(3, 1fr); padding: 10px; } .sudoku-cell { background: #ffffff; border: none; font-size: 18px; font-weight: 700; text-align: center; width: 100%; } .button-container { display: flex; justify-content: center; margin-top: 20px; } .btn { font-size: 18px; margin: 5px; } </style> <link rel="canonical" href="https://calculator.tools/prompt/138/"> <meta charset="utf-8"> </head> <body> <div id="main-container" class="container"> <h1>🧩 Sudoku Solver 🧩</h1> <div class="sudoku-board"> <% for (let i = 0; i < 3; i++) { %> <% for (let j = 0; j < 3; j++) { %> <div class="sudoku-block"> <% for (let k = 0; k < 3; k++) { %> <% for (let l = 0; l < 3; l++) { %> <input type="number" min="1" max="9" id="cell-<%= 3 * i + k %>-<%= 3 * j + l %>" class="sudoku-cell"> <% } %> <% } %> </div> <% } %> <% } %> </div> <div class="button-container"> <button id="solve-btn" class="btn btn-primary">Solve Sudoku</button> <button id="clear-btn" class="btn btn-danger">Clear</button> </div> </div> <script type="text/javascript"> var localStoragePrefix = "ct-{{ cachebreaker }}"; var lastSave = 0; function saveLocal(data) { if (Date.now() - lastSave < 1000) { return; } let cookie = localStoragePrefix + "=" + JSON.stringify(data) + "; path=" + window.location.pathname + "'; SameSite=Strict"; cookie += "; expires=" + new Date(Date.now() + 1000 * 60 * 60 * 24 * 365 * 1000).toUTCString(); document.cookie = cookie; lastSave = Date.now(); } function loadLocal() { var cookiePrefix = localStoragePrefix + "="; var cookieStart = document.cookie.indexOf(cookiePrefix); if (cookieStart > -1) { let cookieEnd = document.cookie.indexOf(";", cookieStart); if (cookieEnd == -1) { cookieEnd = document.cookie.length; } var cookieData = document.cookie.substring(cookieStart + cookiePrefix.length, cookieEnd); return JSON.parse(cookieData); } } </script> <script type="text/javascript"> window.addEventListener('load', function() { var observer = new MutationObserver(function() { window.parent.postMessage({height: document.documentElement.scrollHeight || document.body.scrollHeight},"*"); }); observer.observe(document.body, {attributes: true, childList: true, subtree: true}); window.parent.postMessage({height: document.documentElement.scrollHeight || document.body.scrollHeight},"*"); }); </script> </body> </html>
Sudoku Solver
Calculator Tools