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    "data": {
        "question": {
            "questionId": "2080",
            "questionFrontendId": "1958",
            "categoryTitle": "Algorithms",
            "boundTopicId": 915235,
            "title": "Check if Move is Legal",
            "titleSlug": "check-if-move-is-legal",
            "content": "<p>You are given a <strong>0-indexed</strong> <code>8 x 8</code> grid <code>board</code>, where <code>board[r][c]</code> represents the cell <code>(r, c)</code> on a game board. On the board, free cells are represented by <code>&#39;.&#39;</code>, white cells are represented by <code>&#39;W&#39;</code>, and black cells are represented by <code>&#39;B&#39;</code>.</p>\n\n<p>Each move in this game consists of choosing a free cell and changing it to the color you are playing as (either white or black). However, a move is only <strong>legal</strong> if, after changing it, the cell becomes the <strong>endpoint of a good line</strong> (horizontal, vertical, or diagonal).</p>\n\n<p>A <strong>good line</strong> is a line of <strong>three or more cells (including the endpoints)</strong> where the endpoints of the line are <strong>one color</strong>, and the remaining cells in the middle are the <strong>opposite color</strong> (no cells in the line are free). You can find examples for good lines in the figure below:</p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/07/22/goodlines5.png\" style=\"width: 500px; height: 312px;\" />\n<p>Given two integers <code>rMove</code> and <code>cMove</code> and a character <code>color</code> representing the color you are playing as (white or black), return <code>true</code> <em>if changing cell </em><code>(rMove, cMove)</code> <em>to color</em> <code>color</code> <em>is a <strong>legal</strong> move, or </em><code>false</code><em> if it is not legal</em>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/07/10/grid11.png\" style=\"width: 350px; height: 350px;\" />\n<pre>\n<strong>Input:</strong> board = [[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;B&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;W&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;W&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;W&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;W&quot;,&quot;B&quot;,&quot;B&quot;,&quot;.&quot;,&quot;W&quot;,&quot;W&quot;,&quot;W&quot;,&quot;B&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;B&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;B&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;W&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;]], rMove = 4, cMove = 3, color = &quot;B&quot;\n<strong>Output:</strong> true\n<strong>Explanation:</strong> &#39;.&#39;, &#39;W&#39;, and &#39;B&#39; are represented by the colors blue, white, and black respectively, and cell (rMove, cMove) is marked with an &#39;X&#39;.\nThe two good lines with the chosen cell as an endpoint are annotated above with the red rectangles.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/07/10/grid2.png\" style=\"width: 350px; height: 351px;\" />\n<pre>\n<strong>Input:</strong> board = [[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;B&quot;,&quot;.&quot;,&quot;.&quot;,&quot;W&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;W&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;W&quot;,&quot;B&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;B&quot;,&quot;W&quot;,&quot;.&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;W&quot;,&quot;.&quot;],[&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;.&quot;,&quot;B&quot;]], rMove = 4, cMove = 4, color = &quot;W&quot;\n<strong>Output:</strong> false\n<strong>Explanation:</strong> While there are good lines with the chosen cell as a middle cell, there are no good lines with the chosen cell as an endpoint.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>board.length == board[r].length == 8</code></li>\n\t<li><code>0 &lt;= rMove, cMove &lt; 8</code></li>\n\t<li><code>board[rMove][cMove] == &#39;.&#39;</code></li>\n\t<li><code>color</code> is either <code>&#39;B&#39;</code> or <code>&#39;W&#39;</code>.</li>\n</ul>\n",
            "translatedTitle": "检查操作是否合法",
            "translatedContent": "<p>给你一个下标从&nbsp;<strong>0</strong>&nbsp;开始的&nbsp;<code>8 x 8</code> 网格&nbsp;<code>board</code>&nbsp;,其中&nbsp;<code>board[r][c]</code>&nbsp;表示游戏棋盘上的格子&nbsp;<code>(r, c)</code>&nbsp;。棋盘上空格用&nbsp;<code>'.'</code>&nbsp;表示,白色格子用&nbsp;<code>'W'</code>&nbsp;表示,黑色格子用&nbsp;<code>'B'</code>&nbsp;表示。</p>\n\n<p>游戏中每次操作步骤为:选择一个空格子,将它变成你正在执行的颜色(要么白色,要么黑色)。但是,<strong>合法 </strong>操作必须满足:涂色后这个格子是 <strong>好线段的一个端点</strong>&nbsp;(好线段可以是水平的,竖直的或者是对角线)。</p>\n\n<p><strong>好线段</strong>&nbsp;指的是一个包含 <strong>三个或者更多格子(包含端点格子)</strong>的线段,线段两个端点格子为 <strong>同一种颜色</strong>&nbsp;,且中间剩余格子的颜色都为 <strong>另一种颜色</strong>&nbsp;(线段上不能有任何空格子)。你可以在下图找到好线段的例子:</p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/07/22/goodlines5.png\" style=\"width: 500px; height: 312px;\" />\n<p>给你两个整数&nbsp;<code>rMove</code> 和&nbsp;<code>cMove</code>&nbsp;以及一个字符&nbsp;<code>color</code>&nbsp;,表示你正在执行操作的颜色(白或者黑),如果将格子&nbsp;<code>(rMove, cMove)</code>&nbsp;变成颜色&nbsp;<code>color</code>&nbsp;后,是一个&nbsp;<strong>合法</strong>&nbsp;操作,那么返回&nbsp;<code>true</code>&nbsp;,如果不是合法操作返回&nbsp;<code>false</code>&nbsp;。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1:</strong></p>\n\n<p><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/07/10/grid11.png\" style=\"width: 350px; height: 350px;\" /></p>\n\n<pre>\n<b>输入:</b>board = [[\".\",\".\",\".\",\"B\",\".\",\".\",\".\",\".\"],[\".\",\".\",\".\",\"W\",\".\",\".\",\".\",\".\"],[\".\",\".\",\".\",\"W\",\".\",\".\",\".\",\".\"],[\".\",\".\",\".\",\"W\",\".\",\".\",\".\",\".\"],[\"W\",\"B\",\"B\",\".\",\"W\",\"W\",\"W\",\"B\"],[\".\",\".\",\".\",\"B\",\".\",\".\",\".\",\".\"],[\".\",\".\",\".\",\"B\",\".\",\".\",\".\",\".\"],[\".\",\".\",\".\",\"W\",\".\",\".\",\".\",\".\"]], rMove = 4, cMove = 3, color = \"B\"\n<b>输出:</b>true\n<b>解释:</b>'.','W' 和 'B' 分别用颜色蓝色,白色和黑色表示。格子 (rMove, cMove) 用 'X' 标记。\n以选中格子为端点的两个好线段在上图中用红色矩形标注出来了。\n</pre>\n\n<p><strong>示例 2:</strong></p>\n\n<p><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/07/10/grid2.png\" style=\"width: 350px; height: 351px;\" /></p>\n\n<pre>\n<b>输入:</b>board = [[\".\",\".\",\".\",\".\",\".\",\".\",\".\",\".\"],[\".\",\"B\",\".\",\".\",\"W\",\".\",\".\",\".\"],[\".\",\".\",\"W\",\".\",\".\",\".\",\".\",\".\"],[\".\",\".\",\".\",\"W\",\"B\",\".\",\".\",\".\"],[\".\",\".\",\".\",\".\",\".\",\".\",\".\",\".\"],[\".\",\".\",\".\",\".\",\"B\",\"W\",\".\",\".\"],[\".\",\".\",\".\",\".\",\".\",\".\",\"W\",\".\"],[\".\",\".\",\".\",\".\",\".\",\".\",\".\",\"B\"]], rMove = 4, cMove = 4, color = \"W\"\n<b>输出:</b>false\n<b>解释:</b>虽然选中格子涂色后,棋盘上产生了好线段,但选中格子是作为中间格子,没有产生以选中格子为端点的好线段。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>board.length == board[r].length == 8</code></li>\n\t<li><code>0 &lt;= rMove, cMove &lt; 8</code></li>\n\t<li><code>board[rMove][cMove] == '.'</code></li>\n\t<li><code>color</code>&nbsp;要么是&nbsp;<code>'B'</code> 要么是&nbsp;<code>'W'</code>&nbsp;。</li>\n</ul>\n",
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                "For each line starting at the given cell check if it's a good line",
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