1步杀:后到a8 (a2)
li-07THi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1501 ShuffleRating——俱乐部棋手水平。
白方走棋——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 a2, 车 a1 g1, 兵 g2 h2 d3 f4。
黑方:王 b7, 后 c5, 车 d7, 象 g6, 马 c2, 兵 b6 c7 h7。
棋盘上有8枚白棋和8枚黑棋;该题局面出现在第36回合之后。
The position in numbers
Material is level — 23 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on h1, the black king on b7.
It is White to move on move 36, with 31 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 3. Files fully open (no pawns of either colour): a, e — natural highways for the rooks and queen. Half-open for White: b, c.
The White king has 0 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
36. Qa8#
为何奏效
- 好棋!后到a8保持压力(#)。
- 该变着以1步强制将杀结束。
Move by move
- 36. Qa8# — 后 to a8 and it is checkmate
本题的题型
护卫后杀
皇后贴脸将杀,身后有自己人保护。
有保护的贴身后杀是最常见的将杀图案:后紧贴国王落子,因为有己方棋子或兵保护而成杀。国王无处可逃:吃后不行——那格有保护,而周围所有格子后亲自看管。寻找敌王旁边受保护的格子:有马、象或兵控制它,后的登陆就成了将杀。只需核实一件事:那个格子真有保护,否则国王会直接吃掉后。
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 011
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