1步杀：后到c6 (d7)
li-0O55I命名标签 (格·N)战术主题
一步将杀：找到让对方王无路可逃的一着棋。
难度1993 ShuffleRating——适合进阶战术爱好者。
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 c2, 后 d7, 车 g8, 兵 a2 d2 b3 e3 f4 g4。
黑方：王 e4, 后 f1, 车 h2, 象 b6, 兵 e6 f6 a7 h7。
棋盘上有9枚白棋和8枚黑棋；该题局面出现在第44回合之后。
The position in numbers
Black are ahead by 1 points of material (20 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 c2, the black king on e4.
It is White to move on move 44, with 35 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 4. Files fully open (no pawns of either colour): c — natural highways for the rooks and queen. Half-open for White: h.
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
44. Qc6#
为何奏效
- 最佳着法。后到c6正是引擎的选择（#）。
- 该变着以1步强制将杀结束。
Move by move
- 44. Qc6# — 后 to c6 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）。
题包 014
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