Chess puzzle (Checkmate)
Opening: Polish_Opening, Polish_Opening_Other_variations
Moves: 1. b4 e6 2. Bb2 Nf6 3. b5 c6 4. c4 Qb6 5. e3 cxb5 6. cxb5 a6 7. Qa4 Nd5 8. Na3
Bxa3 9. Bxa3 Nc7 10. Qb4 axb5 *
Position (FEN): rnb1k2r/1pnp1ppp/1q2p3/1p6/1Q6/B3P3/P2P1PPP/R3KBNR w KQkq - 0 11
White to move.
Themes:  Opening Mate in 1 
Puzzle rating: 834
Best move: Qe7#