捉双:象到e5 (f6)
li-06V6c命名标签 (格·N)战术主题
捉双:一子同时攻击两个目标——无法两全。
难度1887 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 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 g1, 后 e3, 车 a1 e1, 象 d3, 马 c3 e5, 兵 a2 b2 f2 g2 h2 d4。
黑方:王 g8, 后 c7, 车 a8 f8, 象 f6 c8, 马 c6, 兵 d5 e6 g6 a7 b7 h7。
棋盘上有13枚白棋和13枚黑棋;该题局面出现在第15回合之后。
The position in numbers
Material is level — 34 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on g1, the black king on g8.
It is Black to move on move 15, with 38 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 6. Files fully open (no pawns of either colour): c — natural highways for the rooks and queen. Half-open for Black: f.
Black hold the bishop pair, an edge in open lines. 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
15... Bxe5 16. dxe5 d4 17. Qg3 dxc3
为何奏效
- 好棋!象到e5保持压力(+3.1)。
- 好棋!兵到d4保持压力(+3.3)。
- 好棋!兵到c3保持压力(+3.4)。
- 你赢得一子——马。
- 若改走dxe5,则d4,你仍占优。
Move by move
- 15… Bxe5 — 象 to e5 (capture)
- 16. dxe5 — 兵 to e5 (capture)
- d4 — 兵 to d4
- 17. Qg3 — 后 to g3
- dxc3 — 兵 to c3 (capture)
本题的题型
相对牵制
一个子挡在更有价值的子前面——它一动就丢子。
相对牵制:被牵制棋子身后站的不是国王,而是更值钱的东西——通常是后。它可以走,但走了就亏:身后的棋子会挨打。寻找一条线上的三个棋子:你的远程棋子、对方较便宜的棋子、以及躲在后面的贵重棋子。小心经典陷阱——只被相对牵制的棋子有时仍会动,带着将军或更大的威胁,吃子前务必核实。
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 014
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