吃掉无保护的车(b2)
li-01aC9战术主题
悬子:对方有棋子无人保护——吃掉它。
难度2280 ShuffleRating——专家水平——很少有人一次解出。
黑方走棋——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 g1, 后 f4, 车 f1, 象 b2 g2, 马 c3, 兵 h2 a3 f3 g3 d4 c5。
黑方:王 g8, 后 e8, 车 b8, 象 f5 a7, 马 c4, 兵 d5 a6 f6 c7 f7 h7。
棋盘上有12枚白棋和12枚黑棋;该题局面出现在第25回合之后。
The position in numbers
Material is level — 29 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on g1, the black king on g8.
It is Black to move on move 25, with 50 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 6. Files fully open (no pawns of either colour): b, e — natural highways for the rooks and queen. Half-open for Black: g.
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
25... Rxb2 26. Qxf5 Rxg2+
为何奏效
- 好棋!车到b2保持压力(+3.2)。
- 好棋!车到g2保持压力(+3.3)。
- 你赢得一子——象。
- 若改走Qxf5,则Rxg2+,你赢得象。
Move by move
- 25… Rxb2 — 车 to b2 (capture)
- 26. Qxf5 — 后 to f5 (capture)
- Rxg2+ — 车 to g2 (capture) with check
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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