牵制:后到d6
li-003wQ战术主题
闪击:一子闪开,另一子的攻击随之而来。
牵制:棋子一动,身后更有价值的目标就会暴露。
难度1814 ShuffleRating——适合进阶战术爱好者。
黑方走棋——找出最佳续着
How to recognize this tactic
A discovered attack fires when one piece steps aside and unmasks the piece behind it. Look for your own units that block a rook, bishop or queen: moving the front piece — ideally with a threat of its own — springs two attacks in one move.
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 d2, 后 d6, 车 f1, 象 f4, 马 d4, 兵 a2 b2 h2 g3。
黑方:王 g8, 后 f6, 车 c8 f8, 兵 g7 h7。
棋盘上有9枚白棋和6枚黑棋;该题局面出现在第24回合之后。
The position in numbers
White are ahead by 3 points of material (24 against 21; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on d2, the black king on g8.
It is Black to move on move 24, with 33 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 2. Files fully open (no pawns of either colour): c, d, e, f — natural highways for the rooks and queen. Half-open for Black: a, b.
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
24... Qxd6 25. Bxd6 Rxf1
为何奏效
- 好棋!后到d6保持压力(+3.5)。
- 好棋!车到f1保持压力(+3.7)。
- 你赢得一子——后。
- 若改走Bxd6,则Rxf1,你赢得后。
Move by move
- 24… Qxd6 — 后 to d6 (capture)
- 25. Bxd6 — 象 to d6 (capture)
- Rxf1 — 车 to f1 (capture)
本题的题型
腾挪
带着先手把自己的子挪开,为决定性一击腾出线路。
让路:决定性打击被你自己的棋子挡住了——那就把它挪开,甚至干脆送掉。关键是带节奏地让路:闪开时带着将军、吃子或威胁,让对手来不及重新布防。识别特征:你看到后或车有一记好杀招,但需要的线路或格子被自己的棋子占着。别舍不得——让路的弃子通常比错失的攻势便宜得多。
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。
简化
换掉重子,把局面导入赢定的残局。
简化是兑现优势的技术:兑掉后和车,你就掐灭了对方的反扑,把对局引入赢定的残局。规则简单:子力占优的一方兑子,但保兵。当子力已经赢到手、对手还在虚张声势时,就去找兑换。错误做法是回避兑后,任由对手用没完没了的威胁搅浑水。
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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