引离:马到f1
li-04HmU战术主题
引离:迫使防守的棋子离开岗位。
难度1132 ShuffleRating——俱乐部棋手水平。
黑方走棋——找出最佳续着
How to recognize this tactic
Deflection drags a defender away from its duty. Identify the enemy piece that guards a key square or mate, then force it to move — with a check, a capture or a threat it must answer — and strike where it no longer defends.
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 h2, 后 e8, 象 g3 e6, 兵 g2 h3 a4 d5。
黑方:王 g7, 后 f6, 象 f8, 马 e3, 兵 a5 c5 h6。
棋盘上有8枚白棋和7枚黑棋;该题局面出现在第38回合之后。
The position in numbers
White are ahead by 1 points of material (19 against 18; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on h2, the black king on g7.
It is Black to move on move 38, with 31 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 3. Files fully open (no pawns of either colour): b, e, f — natural highways for the rooks and queen. Half-open for Black: d, g.
White hold the bishop pair, an edge in open lines. The Black king has 2 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
38... Nf1+ 39. Kg1 Nxg3
为何奏效
- 好棋!马到f1保持压力(+5.1)。
- 好棋!马到g3保持压力(+5.2)。
- 你赢得一子——象。
- 若改走Kg1,则Nxg3,你赢得象。
Move by move
- 38… Nf1+ — 马 to f1 with check
- 39. Kg1 — 王 to g1
- Nxg3 — 马 to g3 (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。
唯一着法
其他任何一步都会输——找到唯一撑得住的那一步。
唯一着法:除了独一无二的那步棋,其余全输的局面。这里不能「顺手」下棋:把原则上不同的防守都过一遍——逃跑、垫挡、兑换、反击——再淘汰被驳倒的。这类题目的标志:显而易见的着法很快就输,而正解常常看起来古怪。先弄清威胁你的究竟是什么——那步唯一的防守自会现身。
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 007
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