牵制：兵到d6
li-06Z0G战术主题
牵制：棋子一动，身后更有价值的目标就会暴露。
难度1703 ShuffleRating——适合进阶战术爱好者。
白方走棋——找出最佳续着
How to recognize this tactic
A pin freezes a piece in front of a more valuable one behind it. Scan the ranks, files and diagonals your bishop, rook or queen controls: if an enemy piece cannot move without exposing its king or queen, it is pinned and can be piled on or bypassed.
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 h1, 后 b5, 车 f1 c8, 象 c3, 马 d2, 兵 c2 e4 c5。
黑方：王 e7, 后 h7, 车 d7 h8, 象 d6, 马 e5 g8, 兵 h2 g3 h3 f6。
棋盘上有9枚白棋和11枚黑棋；该题局面出现在第30回合之后。
The position in numbers
Black are ahead by 4 points of material (28 against 32; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on h1, the black king on e7.
It is White to move on move 30, with 46 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 3 pawns, Black 4. Files fully open (no pawns of either colour): a, b, d — natural highways for the rooks and queen. Half-open for White: f, g, h.
The White king has 0 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
30. cxd6+ Kf7 31. Bxe5
为何奏效
- 好棋！兵到d6保持压力（+2.8）。
- 好棋！象到e5保持压力（+3.1）。
- 你赢得一子——象。
- 若改走Kf7，则Bxe5，你赢得象。
Move by move
- 30. cxd6+ — 兵 to d6 (capture) with check
- Kf7 — 王 to f7
- 31. Bxe5 — 象 to e5 (capture)
本题的题型
消除保护者
先吃掉守卫——再拿下它保护的目标。
消灭守卫是最直白的计划：先干掉看守，再拿走它守护的东西。与引离不同，守卫不是被支走的——而是被就地兑掉或消灭。盯着你想吃的目标问：谁在保护它？这个保护者能不能被划算地吃掉？要计算整串吃子的最终得失，而不是只看第一步——这笔交换必须以最后的战利品回本。
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 013
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