怎么玩数字华容道？
数字华容道（又称 15-Puzzle、数字推盘）是一款百年经典的滑块益智游戏。棋盘是 4×4 的格子，放着 1 到 15 共十五个数字方块，留有一个空格。你可以把与空格相邻的方块滑入空格，从而一步步移动数字。
目标是把被打乱的数字重新排列成从左到右、从上到下的 1～15 顺序，空格停在右下角。我们会记录你的步数和用时，挑战用更少的步数完成。
操作方式
- 鼠标 / 触屏：点击任意与空格同行或同列、且紧邻空格的方块，它会滑过去。
- 键盘：方向键会把相应方向的方块移入空格。
- 点击「打乱重来」可重新洗牌（每次都保证可解）。
解谜思路
- 从上往下、从左往右逐行归位。先复原第一行（1、2、3、4），再复原第二行，依此类推。
- 最后两行一起处理。当只剩下最后两行时，按列成对地把数字推入正确位置。
- 角落数字用「绕圈」技巧。把目标数字和它上方/左侧的数字一起旋转到位。
- 多练习就会形成肌肉记忆，步数自然越来越少。
关于这款游戏
这是昼夜工坊原创的 数字华容道网页版，纯前端实现，每一局的打乱都保证有解。免费、无需下载、手机电脑通用，是锻炼空间规划与逻辑思维的经典小游戏。
常见问题
打乱后一定能还原吗？
一定可以。我们通过「从已完成状态随机走若干步」来打乱，因此每一局都保证可解。
有最少步数纪录吗？
你的最佳步数会保存在本机浏览器中。
可以用键盘玩吗？
可以，方向键会把对应方向的方块滑入空格。
How to play the 15-Puzzle
The 15-Puzzle (sliding-tile puzzle) is a century-old classic. On a 4×4 board sit the numbers 1 to 15 plus one empty space. You slide any tile that is next to the blank into it, shifting the numbers one step at a time.
The goal is to arrange the scrambled numbers into 1-to-15 order, left to right and top to bottom, with the blank ending in the bottom-right. We track your moves and time.
Controls
- Mouse / touch: click any tile in the same row or column as the blank and adjacent to it; it slides over.
- Keyboard: arrow keys slide a tile into the blank.
- Hit Shuffle to reshuffle — every scramble is guaranteed solvable.
How to solve it
- Solve row by row, top to bottom. Fix the first row (1, 2, 3, 4), then the second, and so on.
- Handle the last two rows together. Place the remaining numbers in column pairs.
- Use a rotation trick for corners. Cycle the target number into place with its neighbours.
- With practice, your move count keeps dropping.
About this game
This is an original 15-Puzzle by Day & Night Studio, fully client-side, and every scramble is guaranteed solvable. It's free, no download, phone and desktop. Want the math? Read Why Half of All 15-Puzzles Are Impossible.
FAQ
Is every scramble solvable?
Yes. We scramble by making many random legal slides from the solved state, so every board can be solved.
Is there a best-score record?
Your best move count is stored locally in your browser.
Can I play with the keyboard?
Yes — arrow keys slide the matching tile into the blank.