吃掉无保护的后(e3) (c3)
li-07BkM命名标签 (格·N)战术主题
悬子:对方有棋子无人保护——吃掉它。
难度2521 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 hanging piece is one that is attacked and not defended, or defended too few times. Count attackers against defenders on each enemy unit; where attackers win, take it — often with an in-between move or a check to gain the extra tempo.
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 b2, 后 c3, 车 d1 f1, 马 f3, 兵 h2 a3 f4 g5。
黑方:王 g8, 后 a4, 车 f8, 象 e6, 马 e3, 兵 b6 f6 a7 d7 g7 h7。
棋盘上有9枚白棋和11枚黑棋;该题局面出现在第34回合之后。
The position in numbers
Material is level — 26 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on b2, the black king on g8.
It is White to move on move 34, with 45 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 6. Files fully open (no pawns of either colour): c, e — natural highways for the rooks and queen. Half-open for White: b, d.
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
34. Qxe3 Qc4 35. Qc3
为何奏效
- 好棋!后到e3保持压力(+2.7)。
- 好棋!后到c3保持压力(+2.9)。
- 你赢得一子——马。
- 若改走Qc4,则Qc3,你赢得马。
Move by move
- 34. Qxe3 — 后 to e3 (capture)
- Qc4 — 后 to c4
- 35. Qc3 — 后 to c3
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。
反击
别忙着防守——用更大的威胁回敬对手。
反击:面对威胁你的回应不是防守,而是自己的威胁——更强的那种。趁对手吃你的兵,你宣布将杀:这笔账算在你这边。当直接防守都不好时寻找反击:你有没有将军、攻后的手段、做杀的威胁?新手的错误是对每个威胁都条件反射地防守,从不先查一查对攻资源。
来源
源自 Lichess 题库(CC0)。
题包 015
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