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<span class="diff-file-name">rules.test.ts</span>
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<div class="diff-line diff-line--removed"><span class="diff-marker">-</span> function checkWin(board) {</div>
<div class="diff-line diff-line--removed"><span class="diff-marker">-</span> return checkHorizontal() || checkVertical();</div>
<div class="diff-line diff-line--removed"><span class="diff-marker">-</span> }</div>
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<div class="diff-line diff-line--added"><span class="diff-marker">+</span> function checkWin(board) {</div>
<div class="diff-line diff-line--added"><span class="diff-marker">+</span> return checkHorizontal() ||</div>
<div class="diff-line diff-line--added diff-line--highlight"><span class="diff-marker">+</span> checkVertical() ||</div>
<div class="diff-line diff-line--added diff-line--highlight"><span class="diff-marker">+</span> checkDiagonal();</div>
<div class="diff-line diff-line--added"><span class="diff-marker">+</span> }</div>
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