1步杀：车到e1 (e2)
li-06TJ3命名标签 (格·N)战术主题
一步将杀：找到让对方王无路可逃的一着棋。
难度939 ShuffleRating——适合初学者迈出Chess960战术的第一步。
黑方走棋——找出最佳续着
How to recognize this tactic
A mate in one hides among forcing checks. Run through every check you can give: does it cover all the king's escape squares, is the checking piece safe or supported, and can nothing block or capture it? If yes, that is the mate.
General method: before you move, list the forcing candidates — every check, every capture, every direct threat — and calculate those first. The solution to a tactic is almost always among them.
棋盘上的局面
白方：王 h1, 后 d4, 车 c8, 兵 g2 c3 e3 h3 c4 d5。
黑方：王 g7, 后 e5, 车 e2, 兵 a5 g5 h5 b6 d6。
棋盘上有9枚白棋和8枚黑棋；该题局面出现在第40回合之后。
The position in numbers
White are ahead by 1 points of material (20 against 19; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on h1, the black king on g7.
It is Black to move on move 40, with 19 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 5. Files fully open (no pawns of either colour): f — natural highways for the rooks and queen. Half-open for Black: c, e.
The Black king has 5 empty squares to step to right now — the fewer they are, the closer a mating net.
解答与讲解
主要变着
40... Re1#
为何奏效
- 好棋！车到e1保持压力（#）。
- 该变着以1步强制将杀结束。
Move by move
- 40… Re1# — 车 to e1 and it is checkmate
本题的题型
角落杀
被逼进角落的王，再也没有落脚的格子。
角落杀：国王被赶进棋盘一角，那里他只有三个相邻格——而它们全被夺走或占据。角落是国王最糟糕的住所：进攻方需要控制的格子最少。用将军把国王往角落里赶，绝不让他溜回中心。在最后一击之前切断所有逃亡路线——将杀几乎会自己成形。
一步杀
一步将杀——把它找出来。
一步杀：组合已经落幕，只剩最后一发精准的子弹。方法很简单——列出你所有的将军，对每一个检验国王的三条生路：逃跑、垫挡、吃掉将军者。三条都行不通，那就是将杀。典型错误是爱上找到的第一个将军，漏掉那扇唯一的逃生小窗。
来源
源自 Lichess 题库（CC0）。
经 Stockfish 深度 20+ 验证。
解法强制性已确认（verified）。
题包 005
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