2步杀:马到f7 (h8)
li-023E4命名标签 (格·N)战术主题
两步将杀:第一步制造无法化解的威胁,第二步完成将杀。
难度1397 ShuffleRating——俱乐部棋手水平。
白方走棋——找出最佳续着
How to recognize this tactic
Mate in two usually opens with a forcing move — a check, a capture or an unstoppable threat — that strips the king of squares or defenders, so the follow-up mate becomes unavoidable. Look for the first move that leaves the opponent only losing replies.
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 g1, 车 e7, 象 h5, 马 d5 h8, 兵 g2 h2 c4 f4。
黑方:王 d6, 车 b8, 象 a2 g7, 马 d4, 兵 c5 a6 b7 h7。
棋盘上有9枚白棋和9枚黑棋;该题局面出现在第26回合之后。
The position in numbers
Material is level — 18 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on g1, the black king on d6.
It is White to move on move 26, with 35 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 4. Files fully open (no pawns of either colour): d, e — natural highways for the rooks and queen. Half-open for White: a, b.
Black hold the bishop pair, an edge in open lines. The White king has 3 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
26. Nf7+ Kc6 27. Rc7#
为何奏效
- 好棋!马到f7保持压力(#1)。
- 好棋!车到c7保持压力(#)。
- 该变着以2步强制将杀结束。
- 若改走Kc6,则Rc7#,即被将杀。
Move by move
- 26. Nf7+ — 马 to f7 with check
- Kc6 — 王 to c6
- 27. Rc7# — 车 to c7 and it is checkmate
本题的题型
钩杀
车、马、兵构成一个钩子,王无处可逃。
挂钩杀是三子构成的结构:车将杀,马保护车,兵保护马。车沿线贴身打击国王,马斜站一旁夺走逃生格,兵为整条锁链上保险。这个图案通常在车杀入棋盘边缘后出现。一环扣一环地搭建它:先让马在兵的保护下站稳,再让车杀进去。
两步杀
两步之内的强制将杀。
两步杀:你走一步,对方任意应一步,然后是致命一击。从最强制的首着开始:将军和弃子,把对手的选择压到最少。对他的每一种应法,你都必须备好将杀——所有回应都要检查,一个不漏。常见的失误是算清了漂亮的防守,却忘了那个平淡无奇的。
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 010
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