吃掉无保护的马(f3)
li-0BcqE战术主题
悬子:对方有棋子无人保护——吃掉它。
难度1926 ShuffleRating——适合进阶战术爱好者。
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, 车 b7 d8, 象 f3 a7, 兵 f2 h2 g3 a4 c4。
黑方:王 h7, 车 a8, 象 c3, 马 e5, 兵 c6 f6 g6 g7。
棋盘上有10枚白棋和8枚黑棋;该题局面出现在第29回合之后。
The position in numbers
White are ahead by 6 points of material (21 against 15; 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 h7.
It is Black to move on move 29, with 21 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 5 pawns, Black 4. Files fully open (no pawns of either colour): b, d, e — natural highways for the rooks and queen. Half-open for Black: a, h.
White hold the bishop pair, an edge in open lines. The Black king has 1 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
29... Nxf3+ 30. Kg2 Ne1+ 31. Kf1 Rxd8
为何奏效
- 好棋!马到f3保持压力(+3.2)。
- 好棋!马到e1保持压力(+3.3)。
- 好棋!车到d8保持压力(+3.3)。
- 你赢得一子——车。
- 若改走Kg2,则Ne1+,你赢得象。
Move by move
- 29… Nxf3+ — 马 to f3 (capture) with check
- 30. Kg2 — 王 to g2
- Ne1+ — 马 to e1 with check
- 31. Kf1 — 王 to f1
- Rxd8 — 车 to d8 (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。
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)。
经 Stockfish 深度 20+ 验证。
解法强制性已确认(verified)。
题包 014
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