1r1qkr2/pbpp3p/1p3p2/4p1n1/PPB3PP/4K1QR/2P2P2/RNB1b3 b - - 4 21
FEN state: 1r1qkr2/pbpp3p/1p3p2/4p1n1/PPB3PP/4K1QR/2P2P2/RNB1b3 b - - 4 21 ; Best move: g5h3
The current state of the chess board is: Black rook at b8, black queen at d8, black king at e8 and black rook at f8. Black pawn at a7, black bishop at b7, black pawn at c7, black pawn at d7 and black pawn at h7. Black pawn at b6 and black pawn at f6. Black pawn at e5 and black knight at g5. White pawn at a4, white pawn at b4, white bishop at c4, white pawn at g4 and white pawn at h4. White king at e3, white queen at g3 and white rook at h3. White pawn at c2 and white pawn at f2. White rook at a1, white knight at b1, white bishop at c1 and black bishop at e1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. Black to move.