吃掉无保护的王（g6）
li-058Fh战术主题
悬子：对方有棋子无人保护——吃掉它。
解救棋子：你的棋子正受攻击——找到最佳解救方法。
难度1908 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 hanging piece is one that is attacked and not defended, or defended too few times. Count attackers against defenders on each enemy unit; where attackers win, take it — often with an in-between move or a check to gain the extra tempo.
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 a8, 车 f1 g6, 兵 e3 g3 d4 h4 c5。
黑方：王 g7, 后 d2, 车 b2, 马 h6, 兵 c2 g4 h5 f7。
棋盘上有9枚白棋和8枚黑棋；该题局面出现在第50回合之后。
The position in numbers
White are ahead by 3 points of material (24 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 g1, the black king on g7.
It is Black to move on move 50, with 3 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): a, b — natural highways for the rooks and queen. Half-open for Black: d, e.
The Black 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
50... Kxg6 51. Qe4+ Kg7
为何奏效
- 好棋！王到g6保持压力（+3.9）。
- 好棋！王到g7保持压力（+4.6）。
- 你赢得一子——车。
- 若改走Qe4+，则Kg7，你赢得车。
Move by move
- 50… Kxg6 — 王 to g6 (capture)
- 51. Qe4+ — 后 to e4 with check
- Kg7 — 王 to g7
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。
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」。
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）。
经 Stockfish 深度 20+ 验证。
解法强制性已确认（verified）。
题包 014
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