rn3b1r/pp2pkpp/3p4/qb6/Pp2n3/2P1P2N/2RP1PPP/1NBK1B1R w - - 0 12
FEN state: rn3b1r/pp2pkpp/3p4/qb6/Pp2n3/2P1P2N/2RP1PPP/1NBK1B1R w - - 0 12 ; Best move: a4b5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at e7, black king at f7, black pawn at g7 and black pawn at h7. Black pawn at d6. Black queen at a5 and black bishop at b5. White pawn at a4, black pawn at b4 and black knight at e4. White pawn at c3, white pawn at e3 and white knight at h3. White rook at c2, white pawn at d2, white pawn at f2, white pawn at g2 and white pawn at h2. White knight at b1, white bishop at c1, white king at d1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 12. White to move.