rn2kbr1/4p3/1p2q2p/p4pp1/2PP2PP/4Pb2/PPKBN3/RN5R w q - 3 21
FEN state: rn2kbr1/4p3/1p2q2p/p4pp1/2PP2PP/4Pb2/PPKBN3/RN5R w q - 3 21 ; Best move: b1c3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at e7. Black pawn at b6, black queen at e6 and black pawn at h6. Black pawn at a5, black pawn at f5 and black pawn at g5. White pawn at c4, white pawn at d4, white pawn at g4 and white pawn at h4. White pawn at e3 and black bishop at f3. White pawn at a2, white pawn at b2, white king at c2, white bishop at d2 and white knight at e2. White rook at a1, white knight at b1 and white rook at h1. Black queenside is the only castle move available. Half move number is 3. Full move number is 21. White to move.