rn1qkbbr/1p2p2p/3p1np1/pp2PP1P/Q1P5/N7/PP1P1P2/R1BK2NR w kq - 5 15
FEN state: rn1qkbbr/1p2p2p/3p1np1/pp2PP1P/Q1P5/N7/PP1P1P2/R1BK2NR w kq - 5 15 ; Best move: a4b5
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black king at e8, black bishop at f8, black bishop at g8 and black rook at h8. Black pawn at b7, black pawn at e7 and black pawn at h7. Black pawn at d6, black knight at f6 and black pawn at g6. Black pawn at a5, black pawn at b5, white pawn at e5, white pawn at f5 and white pawn at h5. White queen at a4 and white pawn at c4. White knight at a3. White pawn at a2, white pawn at b2, white pawn at d2 and white pawn at f2. White rook at a1, white bishop at c1, white king at d1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 5. Full move number is 15. White to move.