解救王到d8 (e7)
li-0PNxe命名标签 (格·N)战术主题
解救棋子：你的棋子正受攻击——找到最佳解救方法。
难度2397 ShuffleRating——专家水平——很少有人一次解出。
黑方走棋——找出最佳续着
How to recognize this tactic
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 g1, 后 f5, 车 a1 d1, 兵 a2 b2 f2 g2 d6。
黑方：王 e7, 后 b6, 车 h6 h8, 兵 e5 a7 b7 f7。
棋盘上有9枚白棋和8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 (24 against 23; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on g1, the black king on e7.
It is Black to move on move 29, with 5 legal replies to weigh — only the line that keeps the advantage solves the puzzle. Black are in check right now, so every reply must answer the check.
White keeps 5 pawns, Black 4. Files fully open (no pawns of either colour): c, h — natural highways for the rooks and queen. Half-open for Black: d, g.
The Black king has 3 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... Kd8 30. Qg5+ f6 31. Qxh6 Rxh6
为何奏效
- 好棋！王到d8保持压力（+4.0）。
- 好棋！兵到f6保持压力（+4.1）。
- 好棋！车到h6保持压力（+4.4）。
- 你赢得一子——后。
- 若改走Qg5+，则f6，你仍占优。
Move by move
- 29… Kd8 — 王 to d8
- 30. Qg5+ — 后 to g5 with check
- f6 — 兵 to f6
- 31. Qxh6 — 后 to h6 (capture)
- Rxh6 — 车 to h6 (capture)
本题的题型
制胜一击
找到那记强制得子的妙击。
制胜一击：强制赢得子力，却不归入任何单一的教科书主题。通用的战术配方在此适用：找出无保护的棋子、站位别扭的国王、超载的线路。按力度顺序枚举强制着法：将军、吃子、威胁——绝大多数组合正是从其中之一开始。不要凭感觉评估：把具体变化算到结果确凿无疑为止。
救子
被攻击的子不但能救，还能顺手赚一笔。
救子：你的棋子被攻击，任务是别白白送掉它。办法有几种：带节奏地撤退、加以保护、垫挡攻击，或制造更凶的对攻威胁。机械后撤之前，先找带反击的撤退——既救了子又赚了时间。典型错误是惊慌失措逃到随便一个格子，结果棋子又被抓住。
来源
源自 Lichess 题库（CC0）。
题包 015
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