捉双:后到e8 (e2)
li-07vlT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1450 ShuffleRating——俱乐部棋手水平。
白方走棋——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 e2, 车 a1 e1, 象 a3 b5, 马 d4, 兵 a2 c2 f2 g2 h2 c3。
黑方:王 g8, 后 d8, 车 a8 e8, 象 d7, 马 g6 b8, 兵 d5 a7 b7 f7 g7 h7。
棋盘上有13枚白棋和13枚黑棋;该题局面出现在第13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 White to move on move 13, with 48 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): e — natural highways for the rooks and queen. Half-open for White: b, d.
White hold the bishop pair, an edge in open lines. The White 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
13. Qxe8+ Bxe8 14. Rxe8+ Qxe8 15. Bxe8
为何奏效
- 好棋!后到e8保持压力(+5.0)。
- 好棋!车到e8保持压力(+5.1)。
- 好棋!象到e8保持压力(+5.0)。
- 你赢得一子——后。
- 若改走Bxe8,则Rxe8+,你仍占优。
Move by move
- 13. Qxe8+ — 后 to e8 (capture) with check
- Bxe8 — 象 to e8 (capture)
- 14. Rxe8+ — 车 to e8 (capture) with check
- Qxe8 — 后 to e8 (capture)
- 15. Bxe8 — 象 to e8 (capture)
本题的题型
得利交换
在同一格上的一连串强制吃子,最后是你占便宜。
有利兑换:在同一格上进行强制的连环吃子,收尾时你多出子力。一切靠算术:数清该格的攻击者与防守者,记住吃子队列里每个棋子的价值。按正确顺序吃——先便宜的,后贵的,否则赚的买卖会变成亏本。典型错误是算到一半就停手,漏掉对方最后一次回吃。
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 011
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