1n1qkbnr/3pp1p1/b7/pP2r2p/1P3pP1/PQ2pP2/3P3P/RNB1KB1R w - - 0 21
FEN state: 1n1qkbnr/3pp1p1/b7/pP2r2p/1P3pP1/PQ2pP2/3P3P/RNB1KB1R w - - 0 21 ; Best move: b5a6
The current state of the chess board is: Black knight at b8, black queen at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at d7, black pawn at e7 and black pawn at g7. Black bishop at a6. Black pawn at a5, white pawn at b5, black rook at e5 and black pawn at h5. White pawn at b4, black pawn at f4 and white pawn at g4. White pawn at a3, white queen at b3, black pawn at e3 and white pawn at f3. White pawn at d2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. White to move.