2q1kb1r/p1pp4/b1n1p1pp/4Pp2/P2P1Nn1/Nr6/R1P2PPP/2BBK2R b k - 0 21
FEN state: 2q1kb1r/p1pp4/b1n1p1pp/4Pp2/P2P1Nn1/Nr6/R1P2PPP/2BBK2R b k - 0 21 ; Best move: f8b4
The current state of the chess board is: Black queen at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7 and black pawn at d7. Black bishop at a6, black knight at c6, black pawn at e6, black pawn at g6 and black pawn at h6. White pawn at e5 and black pawn at f5. White pawn at a4, white pawn at d4, white knight at f4 and black knight at g4. White knight at a3 and black rook at b3. White rook at a2, white pawn at c2, white pawn at f2, white pawn at g2 and white pawn at h2. White bishop at c1, white bishop at d1, white king at e1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 21. Black to move.