吃掉无保护的车(f3)
li-0ASbW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1822 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
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 d1, 车 a3, 象 e7, 兵 b4 h4。
黑方:王 c4, 车 f3, 象 f5, 兵 h5 g6。
棋盘上有5枚白棋和5枚黑棋;该题局面出现在第75回合之后。
The position in numbers
Material is level — 10 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on d1, the black king on c4.
It is White to move on move 75, with 23 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 2 pawns, Black 2. Files fully open (no pawns of either colour): a, c, d, e, f — natural highways for the rooks and queen. Half-open for White: g.
The White king has 4 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
75. Rxf3 Bg4 76. Ke2 Kd4 77. Kf2
为何奏效
- 好棋!车到f3保持压力(+5.5)。
- 好棋!王到e2保持压力(+5.7)。
- 好棋!王到f2保持压力(+6.1)。
- 你赢得一子——车。
- 若改走Bg4,则Ke2,你赢得车。
Move by move
- 75. Rxf3 — 车 to f3 (capture)
- Bg4 — 象 to g4
- 76. Ke2 — 王 to e2
- Kd4 — 王 to d4
- 77. Kf2 — 王 to f2
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。
王的行军
残局中王就是战斗力——大胆带它上前线。
王的进军:在残局里王是战斗单位,取胜的常常正是他的向前远征。当后已兑掉、将军不足为惧时,就该进军了:王攻击兵、护送通路兵、抢占格子。主题特征——连续好几步都是王在走。按方格法则提前算好路线,别让对方的王抢到对王。
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)。
经 Stockfish 深度 20+ 验证。
解法强制性已确认(verified)。
题包 013
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