2b1kb1r/1r1ppppp/8/1pp2n2/PQ2P3/Nn6/RqP2NPR/2BK1B2 b k - 3 20
FEN state: 2b1kb1r/1r1ppppp/8/1pp2n2/PQ2P3/Nn6/RqP2NPR/2BK1B2 b k - 3 20 ; Best move: b2c1
The current state of the chess board is: Black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black rook at b7, black pawn at d7, black pawn at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at b5, black pawn at c5 and black knight at f5. White pawn at a4, white queen at b4 and white pawn at e4. White knight at a3 and black knight at b3. White rook at a2, black queen at b2, white pawn at c2, white knight at f2, white pawn at g2 and white rook at h2. White bishop at c1, white king at d1 and white bishop at f1. Black kingside is the only castle move available. Half move number is 3. Full move number is 20. Black to move.