2步杀：闪击，h3 (e6)
li-03gHj命名标签 (格·N)战术主题
引离：迫使防守的棋子离开岗位。
闪击：一子闪开，另一子的攻击随之而来。
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2108 ShuffleRating——专家水平——很少有人一次解出。
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.
A discovered attack fires when one piece steps aside and unmasks the piece behind it. Look for your own units that block a rook, bishop or queen: moving the front piece — ideally with a threat of its own — springs two attacks in one move.
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 f1, 后 b3, 车 e1 a7, 马 b1 d4, 兵 b2 f2 d3 g3 h3。
黑方：王 g8, 后 e6, 车 e8, 象 c6, 马 d8, 兵 d5 h6 g7。
棋盘上有11枚白棋和8枚黑棋；该题局面出现在第34回合之后。
The position in numbers
White are ahead by 7 points of material (30 against 23; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on f1, the black king on g8.
It is Black to move on move 34, with 30 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 5 pawns, Black 3. Files fully open (no pawns of either colour): a, c, e — natural highways for the rooks and queen. Half-open for Black: b, f.
The Black 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
34... Qxh3+ 35. Kg1 Rxe1#
为何奏效
- 好棋！后到h3保持压力（#1）。
- 好棋！车到e1保持压力（#）。
- 该变着以2步强制将杀结束。
- 若改走Kg1，则Rxe1#，即被将杀。
Move by move
- 34… Qxh3+ — 后 to h3 (capture) with check
- 35. Kg1 — 王 to g1
- Rxe1# — 车 to e1 (capture) 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。
王室捉双
带将军的捉双：王必须躲开，另一个子就丢了。
王家捉双是带将军的捉双：两个目标之一是国王本身。国王必须首先应将，因此没有人、也没有时间去救第二个棋子。寻找这样的格子：你的棋子从那里将军，同时攻击无保护的后或车。这是最可靠的捉双——对手根本没有选择的余地。
闪击
一个子闪开，让后面的子发起第二重攻击。
闪击就像拉开幕布：一个棋子离开直线，露出身后的远程棋子发动打击。妙处在于，走开的那个棋子自己还能攻击第二个目标——一步棋，两记重拳。检查你的叠置组合：马或兵的身后站着象或车，透过它们瞄准对方值钱的东西。前面的棋子要跳到最有攻击性的格子——没有第二威胁的闪击损失一半威力。
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 015
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