rnbqkr2/1pp2pb1/4pn2/p2p2B1/1PP5/3P3p/P1Q1PP1R/RN2KBN1 w Qq - 0 12
FEN state: rnbqkr2/1pp2pb1/4pn2/p2p2B1/1PP5/3P3p/P1Q1PP1R/RN2KBN1 w Qq - 0 12 ; Best move: b4b5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black rook at f8. Black pawn at b7, black pawn at c7, black pawn at f7 and black bishop at g7. Black pawn at e6 and black knight at f6. Black pawn at a5, black pawn at d5 and white bishop at g5. White pawn at b4 and white pawn at c4. White pawn at d3 and black pawn at h3. White pawn at a2, white queen at c2, white pawn at e2, white pawn at f2 and white rook at h2. White rook at a1, white knight at b1, white king at e1, white bishop at f1 and white knight at g1. White queenside and black queenside castles are available. Half move number is 0. Full move number is 12. White to move.