1步杀：象到e8
li-06W3x战术主题
一步将杀：找到让对方王无路可逃的一着棋。
难度1415 ShuffleRating——俱乐部棋手水平。
白方走棋——找出最佳续着
How to recognize this tactic
A mate in one hides among forcing checks. Run through every check you can give: does it cover all the king's escape squares, is the checking piece safe or supported, and can nothing block or capture it? If yes, that is the mate.
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 b4, 后 f4, 象 c6, 兵 e3 d4 b5 a6。
黑方：王 h5, 后 c1, 象 b8, 马 d2, 兵 c7。
棋盘上有7枚白棋和5枚黑棋；该题局面出现在第46回合之后。
The position in numbers
Material is level — 16 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on b4, the black king on h5.
It is White to move on move 46, with 32 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 1. Files fully open (no pawns of either colour): f, g, h — natural highways for the rooks and queen. Half-open for White: c.
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
46. Be8#
为何奏效
- 好棋！象到e8保持压力（#）。
- 该变着以1步强制将杀结束。
Move by move
- 46. Be8# — 象 to e8 and it is checkmate
本题的题型
一步杀
一步将杀——把它找出来。
一步杀：组合已经落幕，只剩最后一发精准的子弹。方法很简单——列出你所有的将军，对每一个检验国王的三条生路：逃跑、垫挡、吃掉将军者。三条都行不通，那就是将杀。典型错误是爱上找到的第一个将军，漏掉那扇唯一的逃生小窗。
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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