解救兵到b6 (a7)
li-07dFi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2360 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 g2, 后 g3, 车 a1, 象 c1 g4, 马 b6, 兵 c3 b4 d4 h4 a5。
黑方：王 a8, 后 c4, 车 g6 e8, 兵 d5 e5 h5 f6 a7 b7。
棋盘上有11枚白棋和10枚黑棋；该题局面出现在第27回合之后。
The position in numbers
White are ahead by 3 points of material (28 against 25; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on g2, the black king on a8.
It is Black to move on move 27, with 2 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 6. Files fully open (no pawns of either colour): g — natural highways for the rooks and queen. Half-open for Black: c.
White hold the bishop pair, an edge in open lines. 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
27... axb6 28. Bg5 hxg4 29. axb6+ Kb8
为何奏效
- 好棋！兵到b6保持压力（+1.5）。
- 好棋！兵到g4保持压力（+1.7）。
- 好棋！王到b8保持压力（+1.7）。
- 你赢得一子——象。
- 若改走Bg5，则hxg4，你赢得象。
Move by move
- 27… axb6 — 兵 to b6 (capture)
- 28. Bg5 — 象 to g5
- hxg4 — 兵 to g4 (capture)
- 29. axb6+ — 兵 to b6 (capture) with check
- Kb8 — 王 to b8
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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