1r3bnr/p1pb2p1/1p5k/PP1p1p1B/1n1p3q/3PP3/2PQ1PPP/RNB1K1R1 w - - 6 21
FEN state: 1r3bnr/p1pb2p1/1p5k/PP1p1p1B/1n1p3q/3PP3/2PQ1PPP/RNB1K1R1 w - - 6 21 ; Best move: a5b6
The current state of the chess board is: Black rook at b8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black bishop at d7 and black pawn at g7. Black pawn at b6 and black king at h6. White pawn at a5, white pawn at b5, black pawn at d5, black pawn at f5 and white bishop at h5. Black knight at b4, black pawn at d4 and black queen at h4. White pawn at d3 and white pawn at e3. White pawn at c2, white queen at d2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white rook at g1. Both players have exhausted their castles. Half move number is 6. Full move number is 21. White to move.