吃掉无保护的马(g4)
li-00pRN战术主题
悬子:对方有棋子无人保护——吃掉它。
难度1337 ShuffleRating——俱乐部棋手水平。
白方走棋——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 g1, 后 d3, 车 a1 e1, 象 c2, 马 e5, 兵 a2 f2 g2 h2 b3 c3 d4。
黑方:王 g8, 后 d6, 车 a8 e8, 象 g4, 马 g7, 兵 d5 a6 c6 g6 b7 f7 h7。
棋盘上有13枚白棋和13枚黑棋;该题局面出现在第28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 g1, the black king on g8.
It is White to move on move 28, with 44 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 7 pawns, Black 7. Files fully open (no pawns of either colour): e — natural highways for the rooks and queen.
The White 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
28. Nxg4 Rxe1+ 29. Rxe1
为何奏效
- 好棋!马到g4保持压力(+5.0)。
- 好棋!车到e1保持压力(+5.0)。
- 你赢得一子——车。
- 若改走Rxe1+,则Rxe1,你赢得车。
Move by move
- 28. Nxg4 — 马 to g4 (capture)
- Rxe1+ — 车 to e1 (capture) with check
- 29. Rxe1 — 车 to e1 (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 010
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