串击：车到a6 (a7)
li-0HENX命名标签 (格·N)战术主题
串击：有价值的棋子被迫离开，暴露出身后的棋子。
难度1979 ShuffleRating——适合进阶战术爱好者。
白方走棋——找出最佳续着
How to recognize this tactic
A skewer is a pin reversed — the valuable piece stands in front and, when it moves, the piece behind falls. Line your rook, bishop or queen up against the king or queen and win whatever is hiding behind it.
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 g2, 车 e3 a7, 象 f3, 兵 f2 a3 g3 h3 c4。
黑方：王 d6, 车 d2 f8, 象 c7, 马 h6, 兵 c5 g5 h7。
棋盘上有9枚白棋和8枚黑棋；该题局面出现在第27回合之后。
The position in numbers
Black are ahead by 1 points of material (18 against 19; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on g2, the black king on d6.
It is White to move on move 27, with 32 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 5 pawns, Black 3. Files fully open (no pawns of either colour): b, d, e — natural highways for the rooks and queen.
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
27. Ra6+ Kd7 28. Rxh6
为何奏效
- 好棋！车到a6保持压力（+4.4）。
- 好棋！车到h6保持压力（+4.3）。
- 你赢得一子——马。
- 若改走Kd7，则Rxh6，你赢得马。
Move by move
- 27. Ra6+ — 车 to a6 with check
- Kd7 — 王 to d7
- 28. Rxh6 — 车 to h6 (capture)
本题的题型
串击
线路攻击逼走价值高的子，暴露出它身后的目标。
串击是反过来的牵制：贵重的棋子站在前面，便宜的躲在它身后。大子被迫让开——你就吃掉躲在它影子里的那个。搜寻与另一枚己方棋子同线（直线、横线或斜线）的敌方国王或后。最凶狠的版本带将军：国王一让开，它身后的车就没命了。
来源
源自 Lichess 题库（CC0）。
题包 014
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