解救王到d7
li-0JrV4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1836 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
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 e6, 车 f3, 兵 f7。
黑方:王 g7, 车 c6, 兵 a4 c4 h7。
棋盘上有3枚白棋和5枚黑棋;该题局面出现在第49回合之后。
The position in numbers
Black are ahead by 2 points of material (6 against 8; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on e6, the black king on g7.
It is White to move on move 49, with 5 legal replies to weigh — only the line that keeps the advantage solves the puzzle. White are in check right now, so every reply must answer the check.
White keeps 1 pawns, Black 3. Files fully open (no pawns of either colour): b, d, e, g — natural highways for the rooks and queen. Half-open for White: a, c, h.
The White king has 5 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
49. Kd7 Kf8 50. Kxc6
为何奏效
- 好棋!王到d7保持压力(+5.4)。
- 好棋!王到c6保持压力(+4.9)。
- 你赢得一子——车。
- 若改走Kf8,则Kxc6,你赢得车。
Move by move
- 49. Kd7 — 王 to d7
- Kf8 — 王 to f8
- 50. Kxc6 — 王 to c6 (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。
车残局
最常见的残局——一切取决于子力的活跃度。
车残局是实战中最常见的残局:盘上是车和兵。第一法则是积极性:站在通路兵身后的车,胜过消极守兵的车。正确计划的标志——你的车在攻击什么,而不是在看守什么。错误做法是把车锁死在护兵岗位上:常常宁可丢一兵,也要保住活跃的车和活跃的王。
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 013
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