捉双:后到g5 (e7)
li-003Jb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993 ShuffleRating——适合初学者迈出Chess960战术的第一步。
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 c1, 后 a7, 车 d1 h6, 象 b3, 兵 b2 c2 g2 f3 a4 e4。
黑方:王 g8, 后 e7, 车 c6 f7, 象 d7, 兵 b4 a5 d6 e6 g6 h7。
棋盘上有11枚白棋和11枚黑棋;该题局面出现在第22回合之后。
The position in numbers
Material is level — 28 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on c1, the black king on g8.
It is Black to move on move 22, with 28 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 6. No file is fully open, so the heavy pieces have to be pried in. Half-open for Black: c, f.
The Black king has 3 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
22... Qg5+ 23. Kb1 Qxh6
为何奏效
- 好棋!后到g5保持压力(+2.9)。
- 好棋!后到h6保持压力(+3.0)。
- 你赢得一子——车。
- 若改走Kb1,则Qxh6,你赢得车。
Move by move
- 22… Qg5+ — 后 to g5 with check
- 23. Kb1 — 王 to b1
- Qxh6 — 后 to h6 (capture)
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)。
经 Stockfish 深度 20+ 验证。
解法强制性已确认(verified)。
题包 006
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