r1bq2n1/3p1kp1/pb3p1r/4p3/2p1P1P1/R3QP1N/2PK3P/BN3B1R b - - 1 21
FEN state: r1bq2n1/3p1kp1/pb3p1r/4p3/2p1P1P1/R3QP1N/2PK3P/BN3B1R b - - 1 21 ; Best move: b6e3
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black knight at g8. Black pawn at d7, black king at f7 and black pawn at g7. Black pawn at a6, black bishop at b6, black pawn at f6 and black rook at h6. Black pawn at e5. Black pawn at c4, white pawn at e4 and white pawn at g4. White rook at a3, white queen at e3, white pawn at f3 and white knight at h3. White pawn at c2, white king at d2 and white pawn at h2. White bishop at a1, white knight at b1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.