捉双:马到f2 (d3)
li-0Nc0o命名标签 (格·N)战术主题
闪击:一子闪开,另一子的攻击随之而来。
捉双:一子同时攻击两个目标——无法两全。
难度2553 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
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.
A fork is one piece attacking two targets at once. Look for a knight, pawn or queen move that lands where it hits the king (or a bigger piece) and a second undefended unit on the same turn — the opponent can save only one.
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 d1, 车 a1 h1, 象 c1 b3, 马 e3 h4, 兵 a2 b2 f2 g3 c4 d5 g6 h6。
黑方:王 g8, 后 d8, 车 a8 f8, 象 e7 c8, 马 d3 b4, 兵 e4 c5 a7 b7 d7 h7。
棋盘上有16枚白棋和14枚黑棋;该题局面出现在第19回合之后。
The position in numbers
White are ahead by 2 points of material (39 against 37; 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 19, with 34 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 8 pawns, Black 6. No file is fully open, so the heavy pieces have to be pried in. Half-open for Black: f, g.
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
19... Nxf2 20. Qh5 Nxh1+ 21. Kg2 Bxh4
为何奏效
- 最佳着法。马到f2正是引擎的选择(+1.8)。
- 好棋!马到h1保持压力(+2.3)。
- 好棋!象到h4保持压力(+2.2)。
- 你赢得一子——车。
- 若改走Qh5,则Nxh1+,你赢得车。
Move by move
- 19… Nxf2 — 马 to f2 (capture)
- 20. Qh5 — 后 to h5
- Nxh1+ — 马 to h1 (capture) with check
- 21. Kg2 — 王 to g2
- Bxh4 — 象 to h4 (capture)
本题的题型
马的捉双
马一步同时攻击两个目标——对手只能救下其中一个。
捉双是指一步棋同时攻击两个目标,而马是最擅长捉双的棋子。请用马的视角看局面:它走「日」字,从不走直线,因此它的威胁最容易被忽视。马式捉双的两个受害者总是站在同色格上,而马本身从异色格发起攻击。寻找那个能让马同时攻击对方国王和重子的格子——尤其是敌方国王附近的格子。
围猎被牵制子
被牵制的子逃不掉——再次攻击它,把它拿下。
被牵制的棋子无法逃跑——这意味着只要再攻击它一次,就能整个赢下它。数一数攻击者和防守者:如果进攻方更多,这个子就是你的了。最好的「第二攻击者」是兵:它比它能吃到的任何东西都便宜。别急着立刻吃——先加强压力,然后再收割。
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。
来源
源自 Lichess 题库(CC0)。
题包 015
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