引离：后到c8
li-05Nbl战术主题
引离：迫使防守的棋子离开岗位。
难度1095 ShuffleRating——俱乐部棋手水平。
白方走棋——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 g1, 后 c1, 象 f3 g5, 马 e2, 兵 a2 b2 f2 g2 h2 e4。
黑方：王 g8, 后 b6, 象 g7, 马 e5 f6, 兵 a4 d6 g6 b7 f7 h7。
棋盘上有11枚白棋和11枚黑棋；该题局面出现在第21回合之后。
The position in numbers
Material is level — 24 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 White to move on move 21, with 36 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): c — natural highways for the rooks and queen. Half-open for White: d.
White hold the bishop pair, an edge in open lines. The White 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
21. Qc8+ Bf8 22. Bxf6
为何奏效
- 好棋！后到c8保持压力（+3.9）。
- 好棋！象到f6保持压力（+4.1）。
- 你赢得一子——马。
- 若改走Bf8，则Bxf6，你赢得马。
Move by move
- 21. Qc8+ — 后 to c8 with check
- Bf8 — 象 to f8
- 22. Bxf6 — 象 to f6 (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）。
经 Stockfish 深度 20+ 验证。
解法强制性已确认（verified）。
题包 007
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