闪击：车到f7
li-02veN战术主题
闪击：一子闪开，另一子的攻击随之而来。
难度1266 ShuffleRating——俱乐部棋手水平。
黑方走棋——找出最佳续着
How to recognize this tactic
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.
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 d5, 车 a1 e8, 兵 a2 g2 h2 c6。
黑方：王 g8, 后 b6, 车 f2 f8, 兵 a6 g7 h7。
棋盘上有8枚白棋和7枚黑棋；该题局面出现在第22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 22, with 2 legal replies to weigh — only the line that keeps the advantage solves the puzzle. Black are in check right now, so every reply must answer the check.
White keeps 4 pawns, Black 3. Files fully open (no pawns of either colour): b, d, e, f — natural highways for the rooks and queen. Half-open for Black: c.
The Black king has 1 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
22... Rf7+ 23. Kh1 Rxe8
为何奏效
- 好棋！车到f7保持压力（+4.0）。
- 好棋！车到e8保持压力（+4.7）。
- 你赢得一子——车。
- 若改走Kh1，则Rxe8，你赢得车。
Move by move
- 22… Rf7+ — 车 to f7 with check
- 23. Kh1 — 王 to h1
- Rxe8 — 车 to e8 (capture)
本题的题型
闪将
移动的子闪出将军——它自己趁机可以随便吃子。
闪将：棋子走开，露出身后远程棋子的将军。在国王忙于应将的时候，刚才移动的棋子可以为所欲为、毫发无损——哪怕顺手吃掉皇后。寻找与敌王同线的己方远程棋子，且两者之间恰好隔着一枚你的棋子。规则很简单：在所有可选的闪开方式中，挑那个能吃到或攻击到最贵目标的。
挡将救局
带先手挡将——一举扭转局面。
垫将：你用棋子挡住将军，但不是消极地挡，而是带节奏地挡——垫挡的棋子自己制造威胁。这样的垫挡把防守变成进攻。被将军时比较全部三种应法：吃、走王、垫挡——并在垫挡中寻找带反威胁的那一步。错误做法是本可用积极垫挡扭转局面时，机械地走王了事。
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 009
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