捉双：后到e3 (e2)
li-0G6F5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2327 ShuffleRating——专家水平——很少有人一次解出。
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 f1, 后 e2, 车 e1, 象 b2, 兵 d3 g3 h4。
黑方：王 g8, 后 a2, 车 d8, 象 e3, 兵 g4 b5 f5 a7 h7。
棋盘上有7枚白棋和9枚黑棋；该题局面出现在第34回合之后。
The position in numbers
Black are ahead by 2 points of material (20 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 f1, the black king on g8.
It is White to move on move 34, with 25 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 3 pawns, Black 5. Files fully open (no pawns of either colour): c, e — natural highways for the rooks and queen. Half-open for White: a, b, f.
The White 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
34. Qxe3 Qxb2 35. Qg5+ Qg7 36. Qxd8+
为何奏效
- 好棋！后到e3保持压力（+7.6）。
- 好棋！后到g5保持压力（+8.6）。
- 好棋！后到d8保持压力（#22）。
- 你赢得一子——车。
- 若改走Qxb2，则Qg5+，你仍占优。
Move by move
- 34. Qxe3 — 后 to e3 (capture)
- Qxb2 — 后 to b2 (capture)
- 35. Qg5+ — 后 to g5 with check
- Qg7 — 后 to g7
- 36. Qxd8+ — 后 to d8 (capture) with check
本题的题型
王室捉双
带将军的捉双：王必须躲开，另一个子就丢了。
王家捉双是带将军的捉双：两个目标之一是国王本身。国王必须首先应将，因此没有人、也没有时间去救第二个棋子。寻找这样的格子：你的棋子从那里将军，同时攻击无保护的后或车。这是最可靠的捉双——对手根本没有选择的余地。
来源
源自 Lichess 题库（CC0）。
题包 015
相似题目
在浏览器或 Android 应用中。无需安装 · 免费，无广告