Chess Puzzle #1BJ3T — Beginner, White to move, opening

Position

White: king g1; queen c3; rooks a1/f1; bishops b2/e2; knights b1/f3; pawns a2/d3/e4/f2/g2/h2. Black: king g8; queen d8; rooks a8/e8; bishops d6/d7; knights b4/c5; pawns b5/b7/c7/e6/f7/g7/h7. Black is ahead by 1 point of material. White to move.

Solution (1 move)

1. Opponent setup: Nxa2 — knight b4→a2, captures pawn. Now White to move.
2. Best move: Qxg7# — queen c3→g7, captures pawn, delivers checkmate.

Why this works

After Black's 13...Nxa2, the queen on c3 has a clear diagonal to g7. The move 1.Qxg7# is checkmate because the Black king on g8 has no escape squares and no piece can interpose or capture the queen. The f8 square is controlled by the queen on g7; h8 and h7 are also covered by the queen. The bishop on d6 cannot reach g7, the queen on d8 cannot reach g7, and the rook on e8 is too far away. White's bishop on b2 controls the long diagonal and prevents any back-rank defense. The removal of Black's f7 pawn (by Black's own setup move would require it still to be there, but it isn't — Black has the f7 pawn listed) means the king is trapped on the back rank with no refuge.

What to practice

Look for undefended pawns near the opponent's king, especially when your queen or bishop controls the queening diagonal. The pattern here is simple: when Black's king sits on g8 with only pawns on f7, g7, and h7 as shelter, a queen capture on g7 is often instant mate because the king cannot run. Train yourself to scan for one-move checkmates by checking whether your heavy pieces can reach the squares immediately around the enemy king.

Tactical themes

kingside attack, mate, mate in 1, one move, opening. The combination ends with Qxg7# delivering checkmate.

Position data

FEN: r2qr1k1/1ppb1ppp/3bp3/1pn5/1n2P3/2QP1N2/PB2BPPP/RN3RK1 b - - 4 14

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