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2步杀:引离,h3 (g5)

Shuffle Rating 1859主题: 引离:迫使防守的棋子离开岗位。
黑方走棋——找出最佳续着

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战术主题

引离:迫使防守的棋子离开岗位。

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1859 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

Deflection drags a defender away from its duty. Identify the enemy piece that guards a key square or mate, then force it to move — with a check, a capture or a threat it must answer — and strike where it no longer defends.

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 a6, 车 f1 g2, 兵 h2 d3 a4 g7。

黑方:王 g8, 后 d5, 车 f8, 象 d6, 马 g5, 兵 d4 c5。

棋盘上有8枚白棋和7枚黑棋;该题局面出现在第47回合之后。

The position in numbers

White are ahead by 1 points of material (23 against 22; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.

The white king stands on g1, the black king on g8.

It is Black to move on move 47, with 41 legal replies to weigh — only the line that keeps the advantage solves the puzzle.

White keeps 4 pawns, Black 2. Files fully open (no pawns of either colour): b, e, f — natural highways for the rooks and queen. Half-open for Black: a, g, h.

The Black king has 2 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

47... Nh3+ 48. Kh1 Rxf1#

为何奏效

  • 好棋!马到h3保持压力(#1)。
  • 好棋!车到f1保持压力(#)。
  • 该变着以2步强制将杀结束。
  • 若改走Kh1,则Rxf1#,即被将杀。

Move by move

  • 47… Nh3+ — 马 to h3 with check
  • 48. Kh1 — 王 to h1
  • Rxf1# — 车 to f1 (capture) and it is checkmate

本题的题型

底线杀

王被自己的兵关在里面——重子直捣底线。

底线杀:国王被自己一排未动的兵关在后面,车或后突入底线一锤定音。识别特征:王前的兵没动过、没有通气口,底线只有一个守卫,甚至无人看守。常见手法是先引开或兑掉那个孤独的哨兵,再沿线突击。在自己的对局中要及时开气孔:一步兵着就能免除一场突发灾难。

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。

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。

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 013

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