牵制：车到h7
li-08Dz6战术主题
闪击：一子闪开，另一子的攻击随之而来。
牵制：棋子一动，身后更有价值的目标就会暴露。
解救棋子：你的棋子正受攻击——找到最佳解救方法。
难度1846 ShuffleRating——适合进阶战术爱好者。
黑方走棋——找出最佳续着
How to recognize this tactic
A discovered attack fires when one piece steps aside and unmasks the piece behind it. Look for your own units that block a rook, bishop or queen: moving the front piece — ideally with a threat of its own — springs two attacks in one move.
A pin freezes a piece in front of a more valuable one behind it. Scan the ranks, files and diagonals your bishop, rook or queen controls: if an enemy piece cannot move without exposing its king or queen, it is pinned and can be piled on or bypassed.
Here the task is defensive: one of your pieces is under attack and must be rescued without losing more. Look for a move that saves it with tempo — a counter-check, an equal counter-attack or an interposition — rather than a passive retreat.
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 h2, 后 h6, 车 e8, 象 h7, 兵 a2 f2 b3 g3。
黑方：王 f5, 后 d6, 车 d7, 象 c6, 兵 f6 g6 a7。
棋盘上有8枚白棋和7枚黑棋；该题局面出现在第38回合之后。
The position in numbers
White are ahead by 1 points of material (21 against 20; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on h2, the black king on f5.
It is Black to move on move 38, with 35 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 3. Files fully open (no pawns of either colour): c, d, e, h — natural highways for the rooks and queen. Half-open for Black: b.
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
38... Rxh7 39. Qxh7 Bxe8 40. Qh3+ Ke5
为何奏效
- 好棋！车到h7保持压力（+4.1）。
- 好棋！象到e8保持压力（+4.2）。
- 好棋！王到e5保持压力（+4.4）。
- 你赢得一子——车。
- 若改走Qxh7，则Bxe8，你赢得车。
Move by move
- 38… Rxh7 — 车 to h7 (capture)
- 39. Qxh7 — 后 to h7 (capture)
- Bxe8 — 象 to e8 (capture)
- 40. Qh3+ — 后 to h3 with check
- Ke5 — 王 to e5
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。
唯一着法
其他任何一步都会输——找到唯一撑得住的那一步。
唯一着法：除了独一无二的那步棋，其余全输的局面。这里不能「顺手」下棋：把原则上不同的防守都过一遍——逃跑、垫挡、兑换、反击——再淘汰被驳倒的。这类题目的标志：显而易见的着法很快就输，而正解常常看起来古怪。先弄清威胁你的究竟是什么——那步唯一的防守自会现身。
解杀
杀棋已成威胁——化解它并保持优势。
解杀：对手离将杀只差一步——但现在轮到你走，这改变了一切。寻找既解除杀棋威胁又保住你优势的防守：常常是一步将军或反威胁，让对方腾不出手来做杀。先准确说出对方要在哪个格子将杀你——否则就是蒙着眼防守。错误做法是走一步实际并没有解除威胁的「防守」。
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 013
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