牵制：车到d1 (e1)
li-0KR02命名标签 (格·N)战术主题
牵制：棋子一动，身后更有价值的目标就会暴露。
难度1868 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 pin freezes a piece in front of a more valuable one behind it. Scan the ranks, files and diagonals your bishop, rook or queen controls: if an enemy piece cannot move without exposing its king or queen, it is pinned and can be piled on or bypassed.
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 h1, 后 b6, 车 e1, 象 g4, 兵 h3 c4 e4 a5。
黑方：王 b8, 后 g7, 车 b2, 象 b7, 兵 b4 c5 e5 a6。
棋盘上有8枚白棋和8枚黑棋；该题局面出现在第38回合之后。
The position in numbers
Material is level — 21 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on h1, the black king on b8.
It is White to move on move 38, with 32 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 4 pawns, Black 4. Files fully open (no pawns of either colour): d, f, g — natural highways for the rooks and queen. Half-open for White: b.
The White 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
38. Rd1 Qc7 39. Rd8+ Qxd8 40. Qxd8+
为何奏效
- 好棋！车到d1保持压力（+4.9）。
- 好棋！车到d8保持压力（+5.9）。
- 好棋！后到d8保持压力（+5.9）。
- 你赢得一子——后。
- 若改走Qc7，则Rd8+，你仍占优。
Move by move
- 38. Rd1 — 车 to d1
- Qc7 — 后 to c7
- 39. Rd8+ — 车 to d8 with check
- Qxd8 — 后 to d8 (capture)
- 40. Qxd8+ — 后 to d8 (capture) with check
本题的题型
静着
既不将军也不吃子——但正是这步不起眼的棋决定了胜负。
静着：既不将军也不吃子，却恰恰是它决定胜负——制造无法招架的威胁，或夺走国王最后的格子。这是最难的一类着法：眼睛总在搜寻轰鸣的重击，赢棋的却是一次低调的挪动。线索：所有强制尝试都撞上防守——那就找那步单纯加强威胁或抢占格子的棋。训练自己发问：如果不吃不将，只是静静地加强，会怎样？
来源
源自 Lichess 题库（CC0）。
题包 014
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