捉双：马到g6
li-04txB战术主题
捉双：一子同时攻击两个目标——无法两全。
难度881 ShuffleRating——适合初学者迈出Chess960战术的第一步。
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 c3, 马 f4, 兵 f2 b3 g3 d4 c5 e5。
黑方：王 c8, 后 e7, 车 f8, 象 b7, 马 a3 b8, 兵 b5 d5 h5 a6 e6 g6 c7。
棋盘上有11枚白棋和13枚黑棋；该题局面出现在第28回合之后。
The position in numbers
Black are ahead by 2 points of material (28 against 30; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on g1, the black king on c8.
It is White to move on move 28, with 43 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 7. No file is fully open, so the heavy pieces have to be pried in. Half-open for White: a, h.
The White king has 4 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
28. Nxg6 Qe8 29. Nxf8
为何奏效
- 好棋！马到g6保持压力（+3.2）。
- 好棋！马到f8保持压力（+3.3）。
- 你赢得一子——车。
- 若改走Qe8，则Nxf8，你赢得车。
Move by move
- 28. Nxg6 — 马 to g6 (capture)
- Qe8 — 后 to e8
- 29. Nxf8 — 马 to f8 (capture)
本题的题型
马的捉双
马一步同时攻击两个目标——对手只能救下其中一个。
捉双是指一步棋同时攻击两个目标，而马是最擅长捉双的棋子。请用马的视角看局面：它走「日」字，从不走直线，因此它的威胁最容易被忽视。马式捉双的两个受害者总是站在同色格上，而马本身从异色格发起攻击。寻找那个能让马同时攻击对方国王和重子的格子——尤其是敌方国王附近的格子。
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 004
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