串击：后到f2
li-0Q6Sd战术主题
引离：迫使防守的棋子离开岗位。
串击：有价值的棋子被迫离开，暴露出身后的棋子。
难度2506 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
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.
A skewer is a pin reversed — the valuable piece stands in front and, when it moves, the piece behind falls. Line your rook, bishop or queen up against the king or queen and win whatever is hiding behind it.
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 b4, 车 b1 e5, 马 b3, 兵 f2 h2 a3 c3。
黑方：王 g8, 后 f8, 车 a7 a8, 兵 d5 g5 e6 g7。
棋盘上有9枚白棋和8枚黑棋；该题局面出现在第32回合之后。
The position in numbers
White are ahead by 3 points of material (26 against 23; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on b2, the black king on g8.
It is Black to move on move 32, with 33 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 4. Files fully open (no pawns of either colour): b — natural highways for the rooks and queen. Half-open for Black: a, c, f, h.
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
32... Qxf2+ 33. Kc1 Qg1+ 34. Kd2 Qxb1
为何奏效
- 好棋！后到f2保持压力（+4.5）。
- 好棋！后到g1保持压力（+4.5）。
- 好棋！后到b1保持压力（+4.6）。
- 你赢得一子——车。
- 若改走Kc1，则Qg1+，你仍占优。
Move by move
- 32… Qxf2+ — 后 to f2 (capture) with check
- 33. Kc1 — 王 to c1
- Qg1+ — 后 to g1 with check
- 34. Kd2 — 王 to d2
- Qxb1 — 后 to b1 (capture)
本题的题型
串击
线路攻击逼走价值高的子，暴露出它身后的目标。
串击是反过来的牵制：贵重的棋子站在前面，便宜的躲在它身后。大子被迫让开——你就吃掉躲在它影子里的那个。搜寻与另一枚己方棋子同线（直线、横线或斜线）的敌方国王或后。最凶狠的版本带将军：国王一让开，它身后的车就没命了。
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）。
题包 015
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