♚Open in the app

Mate in 3: pawn to d6 (e5·3)

Shuffle Rating 1760Theme: Chess960 twist: use the unusual starting setup of the pieces.
White to move — find the best continuation

Solve in the app

The tactical motive

Chess960 twist: use the unusual starting setup of the pieces.

Mate in 3: a forced sequence that ends in checkmate.

Difficulty 1760 ShuffleRating — for advanced tacticians.

White to move — find the best continuation

How to recognize this tactic

In Chess960 the pieces start on unfamiliar squares, so tactics appear earlier and from unusual angles. Do not trust classical patterns — read the actual lines of the bishops, the rooks and the queen from where they really stand in this position.

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 g1, queen b4, rook a1 e2, bishop c1 c4, knight f6, pawn a2 c2 f2 g2 h2 e5.

Black: king e7, queen b8, rook a8 g8, bishop g7 c8, knight d8, pawn h5 b6 d6 g6 a7.

13 white and 12 black pieces are on the board; the puzzle position arises after move 17.

The position in numbers

White are ahead by 1 points of material (34 against 33; 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 e7.

It is White to move on move 17, with 54 legal replies to weigh — only the line that keeps the advantage solves the puzzle.

White keeps 6 pawns, Black 5. No file is fully open, so the heavy pieces have to be pried in. Half-open for White: b, d.

The White king has 2 empty squares to step to right now — the fewer they are, the closer a mating net.

Solution & explanation

Main line

17. exd6+ Kxf6 18. Qc3+ Kf5 19. Qf3#

Why it works

  • Great move! pawn to d6 keeps the pressure (#2).
  • Spot on — queen to c3 (#1).
  • Precise: queen to f3 is the top choice (#).
  • The line ends in a forced mate in 3.
  • If instead Kxf6, then Qc3+ and you stay on top.

Move by move

  • 17. exd6+ — pawn to d6 (capture) with check
  • Kxf6 — king to f6 (capture)
  • 18. Qc3+ — queen to c3 with check
  • Kf5 — king to f5
  • 19. Qf3# — queen to f3 and it is checkmate

Types in this puzzle

Ladder mate

Two heavy pieces climb line by line, cutting off every retreat.

The ladder mate uses two heavy pieces climbing rung by rung: one cuts the king off along a line, the other checks on the next line, driving him toward the edge. It is the classic two-rook technique — check, the king retreats one rank, the other rook checks, until mate on the last rank. The only danger is the king creeping close enough to attack one of your rooks. If it does, simply slide that rook to the far side of the same line.

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.

Counter-strike

Don't defend — answer the threat with a bigger one.

The counter-strike: instead of defending against the threat, you answer with a bigger threat of your own. While your opponent grabs a pawn, you deliver mate — the arithmetic favors you. Look for a counter when direct defenses fail: do you have a check, an attack on the queen, a mating threat? The beginner's error is meeting every threat with a reflexive defense without checking the counterattacking resources first.

About this position

These pieces come from starting position #598.

SP-598 · ThroneScout — A knight starts on the edge (a/h) and the king sits centrally on d or e; the mirror twin stays in this family too.

The king starts on e1, the rooks on a1 and g1, the queen on b1.

Castling ends where it always does: king to g1 and rook to f1 on the short side, king to c1 and rook to d1 on the long one.

The bishops stand on c1 and f1; their long diagonals reach h6 and a6 once the d- and e-pawns step aside.

One second-rank pawn starts with no defender at all: h2.

The setup belongs to the ThroneScout family; read right to left it becomes position 262.

The engine's main line opens with f4.

Morozov Balance Index: 28 of 100 — class C — noticeable edge. Engine evaluation of the starting position: +33 centipawns for White (depth 43, 400 000 000 nodes).

Explore position #598

Provenance

Mined from the project's engine self-play games.

Pack 013 · SP-598

Similar puzzles

In your browser or in the Android app. Nothing to install · Free, no ads

Embed

Copy this code to embed the board on your site: