牵制:象到f5 (d3)
li-00734命名标签 (格·N)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1692 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 b1, 后 c2, 车 c1 g2, 象 d3 h4, 兵 a2 f2 h2 b3 e3 d4 f4。
黑方:王 g8, 后 d7, 车 c7 a8, 象 f8, 马 a6, 兵 a3 d5 f5 c6 g6 e7 h7。
棋盘上有13枚白棋和13枚黑棋;该题局面出现在第27回合之后。
The position in numbers
Material is level — 32 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on b1, the black king on g8.
It is White to move on move 27, with 34 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 7 pawns, Black 7. No file is fully open, so the heavy pieces have to be pried in. Half-open for White: c, g.
White hold the bishop pair, an edge in open lines. The White 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
27. Bxf5 e6 28. Bxg6
为何奏效
- 好棋!象到f5保持压力(+3.9)。
- 好棋!象到g6保持压力(+3.8)。
- 你获得制胜局面(+3.8)。
- 若改走e6,则Bxg6,你仍占优。
Move by move
- 27. Bxf5 — 象 to f5 (capture)
- e6 — 兵 to e6
- 28. Bxg6 — 象 to g6 (capture)
本题的题型
围猎被牵制子
被牵制的子逃不掉——再次攻击它,把它拿下。
被牵制的棋子无法逃跑——这意味着只要再攻击它一次,就能整个赢下它。数一数攻击者和防守者:如果进攻方更多,这个子就是你的了。最好的「第二攻击者」是兵:它比它能吃到的任何东西都便宜。别急着立刻吃——先加强压力,然后再收割。
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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