吃掉无保护的象（e4）
li-049Js战术主题
悬子：对方有棋子无人保护——吃掉它。
难度1033 ShuffleRating——俱乐部棋手水平。
黑方走棋——找出最佳续着
How to recognize this tactic
A hanging piece is one that is attacked and not defended, or defended too few times. Count attackers against defenders on each enemy unit; where attackers win, take it — often with an in-between move or a check to gain the extra tempo.
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 c1, 车 d1 d6, 象 f4, 马 e4 b5, 兵 b2 f2 g2 a3 c4 h4 e5。
黑方：王 h8, 车 b6 b8, 象 c6 g7, 马 a6, 兵 a4 c5 e6 g6 h6 f7。
棋盘上有13枚白棋和12枚黑棋；该题局面出现在第29回合之后。
The position in numbers
White are ahead by 1 points of material (26 against 25; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on c1, the black king on h8.
It is Black to move on move 29, with 27 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 7 pawns, Black 6. Files fully open (no pawns of either colour): d — natural highways for the rooks and queen. Half-open for Black: b.
Black hold the bishop pair, an edge in open lines. 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
29... Bxe4 30. Rxb6 Rxb6
为何奏效
- 好棋！象到e4保持压力（+2.2）。
- 好棋！车到b6保持压力（+2.4）。
- 你赢得一子——车。
- 若改走Rxb6，则Rxb6，你赢得车。
Move by move
- 29… Bxe4 — 象 to e4 (capture)
- 30. Rxb6 — 车 to b6 (capture)
- Rxb6 — 车 to b6 (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。
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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