串击：后到e6
li-0FhBG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2135 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 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 c1, 后 e5, 车 e1 h1, 象 b3, 兵 a2 b2 g2 h2 c6。
黑方：王 g8, 后 d8, 车 f5 a8, 象 g4, 兵 f4 d5 b6 a7 c7 g7。
棋盘上有10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
Black are ahead by 1 points of material (27 against 28; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on c1, the black king on g8.
It is White to move on move 22, with 36 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 5 pawns, Black 6. Files fully open (no pawns of either colour): e — natural highways for the rooks and queen. Half-open for White: d, f.
The White 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. Qe6+ Kf8 23. h3 Rf6 24. Qxg4
为何奏效
- 好棋！后到e6保持压力（+5.1）。
- 好棋！兵到h3保持压力（+5.1）。
- 好棋！后到g4保持压力（+5.2）。
- 你赢得一子——象。
- 若改走Kf8，则h3，你仍占优。
Move by move
- 22. Qe6+ — 后 to e6 with check
- Kf8 — 王 to f8
- 23. h3 — 兵 to h3
- Rf6 — 车 to f6
- 24. Qxg4 — 后 to g4 (capture)
本题的题型
制胜一击
找到那记强制得子的妙击。
制胜一击：强制赢得子力，却不归入任何单一的教科书主题。通用的战术配方在此适用：找出无保护的棋子、站位别扭的国王、超载的线路。按力度顺序枚举强制着法：将军、吃子、威胁——绝大多数组合正是从其中之一开始。不要凭感觉评估：把具体变化算到结果确凿无疑为止。
来源
源自 Lichess 题库（CC0）。
题包 015
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