闪击:后到c4
li-08Bmd战术主题
闪击:一子闪开,另一子的攻击随之而来。
难度1826 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
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 b1, 后 d2, 车 e1 f1, 象 h3, 马 c4, 兵 a2 b2 c2 h2 d3 f3 g3 e4。
黑方:王 b8, 后 d4, 车 d8 h8, 象 h6, 马 g8, 兵 f4 c5 e5 g6 a7 b7 h7。
棋盘上有14枚白棋和13枚黑棋;该题局面出现在第20回合之后。
The position in numbers
White are ahead by 1 points of material (33 against 32; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on b1, the black king on b8.
It is Black to move on move 20, with 30 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 8 pawns, Black 7. No file is fully open, so the heavy pieces have to be pried in. Half-open for Black: d.
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
20... Qxc4 21. dxc4 Rxd2
为何奏效
- 好棋!后到c4保持压力(+3.7)。
- 好棋!车到d2保持压力(+4.1)。
- 你赢得一子——后。
- 若改走dxc4,则Rxd2,你赢得后。
Move by move
- 20… Qxc4 — 后 to c4 (capture)
- 21. dxc4 — 兵 to c4 (capture)
- Rxd2 — 车 to d2 (capture)
本题的题型
腾挪
带着先手把自己的子挪开,为决定性一击腾出线路。
让路:决定性打击被你自己的棋子挡住了——那就把它挪开,甚至干脆送掉。关键是带节奏地让路:闪开时带着将军、吃子或威胁,让对手来不及重新布防。识别特征:你看到后或车有一记好杀招,但需要的线路或格子被自己的棋子占着。别舍不得——让路的弃子通常比错失的攻势便宜得多。
消除保护者
先吃掉守卫——再拿下它保护的目标。
消灭守卫是最直白的计划:先干掉看守,再拿走它守护的东西。与引离不同,守卫不是被支走的——而是被就地兑掉或消灭。盯着你想吃的目标问:谁在保护它?这个保护者能不能被划算地吃掉?要计算整串吃子的最终得失,而不是只看第一步——这笔交换必须以最后的战利品回本。
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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