r1bqkbn1/p4rn1/2p2p2/1pP1p1pp/3PP2P/P3QPP1/1P1N2B1/R1B1KR2 b - - 2 21
FEN state: r1bqkbn1/p4rn1/2p2p2/1pP1p1pp/3PP2P/P3QPP1/1P1N2B1/R1B1KR2 b - - 2 21 ; Best move: g5h4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black rook at f7 and black knight at g7. Black pawn at c6 and black pawn at f6. Black pawn at b5, white pawn at c5, black pawn at e5, black pawn at g5 and black pawn at h5. White pawn at d4, white pawn at e4 and white pawn at h4. White pawn at a3, white queen at e3, white pawn at f3 and white pawn at g3. White pawn at b2, white knight at d2 and white bishop at g2. White rook at a1, white bishop at c1, white king at e1 and white rook at f1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. Black to move.