2b1k2r/rp1pn3/2p1p2p/q4p2/nbN4P/P2PP2B/4KP2/RQB3NR b k - 0 21
FEN state: 2b1k2r/rp1pn3/2p1p2p/q4p2/nbN4P/P2PP2B/4KP2/RQB3NR b k - 0 21 ; Best move: a4c3
The current state of the chess board is: Black bishop at c8, black king at e8 and black rook at h8. Black rook at a7, black pawn at b7, black pawn at d7 and black knight at e7. Black pawn at c6, black pawn at e6 and black pawn at h6. Black queen at a5 and black pawn at f5. Black knight at a4, black bishop at b4, white knight at c4 and white pawn at h4. White pawn at a3, white pawn at d3, white pawn at e3 and white bishop at h3. White king at e2 and white pawn at f2. White rook at a1, white queen at b1, white bishop at c1, white knight at g1 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.