1rbk3r/pp4bp/3pp1pn/2pP3P/3PK3/BP3Pp1/4P1P1/1R1Q1BN1 b - - 0 21
FEN state: 1rbk3r/pp4bp/3pp1pn/2pP3P/3PK3/BP3Pp1/4P1P1/1R1Q1BN1 b - - 0 21 ; Best move: h6f5
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at d8 and black rook at h8. Black pawn at a7, black pawn at b7, black bishop at g7 and black pawn at h7. Black pawn at d6, black pawn at e6, black pawn at g6 and black knight at h6. Black pawn at c5, white pawn at d5 and white pawn at h5. White pawn at d4 and white king at e4. White bishop at a3, white pawn at b3, white pawn at f3 and black pawn at g3. White pawn at e2 and white pawn at g2. White rook at b1, white queen at d1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.