2步杀:后到g3 (c3·2)
li-0MMHF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1856 ShuffleRating——适合进阶战术爱好者。
黑方走棋——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, 后 c5, 兵 a3 h3 c4 d5。
黑方:王 h6, 后 c3, 象 g6, 兵 a6。
棋盘上有6枚白棋和4枚黑棋;该题局面出现在第42回合之后。
The position in numbers
Material is level — 13 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 h6.
It is Black to move on move 42, with 35 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 1. Files fully open (no pawns of either colour): b, e, f, g — natural highways for the rooks and queen. Half-open for Black: c, d, h.
The Black king has 4 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
42... Qg3+ 43. Kf1 Bd3#
为何奏效
- 好棋!后到g3保持压力(#1)。
- 好棋!象到d3保持压力(#)。
- 该变着以2步强制将杀结束。
- 若改走Kf1,则Bd3#,即被将杀。
Move by move
- 42… Qg3+ — 后 to g3 with check
- 43. Kf1 — 王 to f1
- Bd3# — 象 to d3 and it is checkmate
本题的题型
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。
后残局
开放棋盘上的皇后大战——精确高于一切。
后残局阴险难测:后无处不达,一个不准就把胜势变成长将和棋。主题特征:兵很少、王暴露、连环将军的味道飘在空中。提前把王藏好,并利用自己的将军带节奏地调后靠近、或推进通路兵。错误做法是只顾吃兵,把王丢给无穷无尽的将军。
来源
源自 Lichess 题库(CC0)。
题包 013
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