捉双:马到f3 (d4)
li-027fm命名标签 (格·N)战术主题
捉双:一子同时攻击两个目标——无法两全。
难度1048 ShuffleRating——俱乐部棋手水平。
黑方走棋——找出最佳续着
How to recognize this tactic
A fork is one piece attacking two targets at once. Look for a knight, pawn or queen move that lands where it hits the king (or a bigger piece) and a second undefended unit on the same turn — the opponent can save only one.
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 d3, 象 e1, 兵 f2 a3 b3 g3 h4。
黑方:王 h8, 后 d5, 马 d4, 兵 a6 c6 h6 g7。
棋盘上有8枚白棋和7枚黑棋;该题局面出现在第35回合之后。
The position in numbers
White are ahead by 1 points of material (17 against 16; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on g1, the black king on h8.
It is Black to move on move 35, with 32 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 5 pawns, Black 4. Files fully open (no pawns of either colour): d, e — natural highways for the rooks and queen. Half-open for Black: b, f.
The Black 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
35... Nf3+ 36. Qxf3 Qxf3
为何奏效
- 好棋!马到f3保持压力(+6.7)。
- 好棋!后到f3保持压力(+6.7)。
- 你赢得一子——后。
- 若改走Qxf3,则Qxf3,你赢得后。
Move by move
- 35… Nf3+ — 马 to f3 with check
- 36. Qxf3 — 后 to f3 (capture)
- Qxf3 — 后 to f3 (capture)
本题的题型
闪击
一个子闪开,让后面的子发起第二重攻击。
闪击就像拉开幕布:一个棋子离开直线,露出身后的远程棋子发动打击。妙处在于,走开的那个棋子自己还能攻击第二个目标——一步棋,两记重拳。检查你的叠置组合:马或兵的身后站着象或车,透过它们瞄准对方值钱的东西。前面的棋子要跳到最有攻击性的格子——没有第二威胁的闪击损失一半威力。
后残局
开放棋盘上的皇后大战——精确高于一切。
后残局阴险难测:后无处不达,一个不准就把胜势变成长将和棋。主题特征:兵很少、王暴露、连环将军的味道飘在空中。提前把王藏好,并利用自己的将军带节奏地调后靠近、或推进通路兵。错误做法是只顾吃兵,把王丢给无穷无尽的将军。
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 006
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