Mate in 3: queen to g1
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The tactical motive
Mate in 3: a forced sequence that ends in checkmate.
Difficulty 1435 ShuffleRating — club-player level.
Black to move — find the best continuation
How to recognize this tactic
In a mate in three every move must be forcing; the defender should never get a free tempo. Find the check or threat that herds the king, calculate the single defence to each, and confirm the net closes on the third move.
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.
Position on the board
White: king h1, queen b3, rook g1, pawn a2 g2 h3 b4 d6.
Black: king c8, queen f2, rook c2, pawn g3 f5 b6 a7.
8 white and 7 black pieces are on the board; the puzzle position arises after move 41.
The position in numbers
White are ahead by 1 points of material (19 against 18; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on h1, the black king on c8.
It is Black to move on move 41, with 29 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 5 pawns, Black 4. Files fully open (no pawns of either colour): c, e — natural highways for the rooks and queen. Half-open for Black: d, h.
The Black king has 4 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
41... Qxg1+ 42. Kxg1 Rc1+ 43. Qd1 Rxd1#
Why it works
- Great move! queen to g1 keeps the pressure (#2).
- Well found: rook to c1 (#1).
- Strong! rook to d1 is the sharp choice (#).
- The line ends in a forced mate in 3.
- If instead Kxg1, then Rc1+ and you stay on top.
Move by move
- 41… Qxg1+ — queen to g1 (capture) with check
- 42. Kxg1 — king to g1 (capture)
- Rc1+ — rook to c1 with check
- 43. Qd1 — queen to d1
- Rxd1# — rook to d1 (capture) and it is checkmate
Types in this puzzle
Mate in 3
A forced checkmate in three moves.
Mate in three is a forced staircase: each of your moves narrows the opponent's choices, and the third one ends the game. Look for the start among checks and sacrifices — quiet first moves are rare in mating problems, but deliciously sneaky. Keep the tree in your head: every defense gets its own branch. Do not stop calculating after move two — see the final mating picture with your own eyes.
Sacrifice attack
Give up material to unleash a decisive attack.
A sacrificial attack gives up material on purpose to rip the king's shelter open and launch a decisive assault. The sac is sound when you get concrete assets in return: open lines to the king, tempi, pieces ready to pour in. The signs: a poorly sheltered king, your forces aimed at its home, defenders stranded far away. The iron rule is to calculate, not hope — once the material is gone, there is no way back.
Simplification
Trade the heavy pieces and steer into a won endgame.
Simplification is how you convert an advantage: by trading queens and rooks you extinguish the counterplay and steer the game into a won endgame. The rule is simple — the side with extra material trades pieces but keeps pawns. Look for exchanges once the material is already won and your opponent is still rattling threats. The mistake is avoiding the queen trade and letting him muddy the water forever.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 011
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