r1b1kb2/3pppr1/8/1pn1P3/p1BPn2p/PP2Q1PP/4KP2/RN4NR b - - 2 23
FEN state: r1b1kb2/3pppr1/8/1pn1P3/p1BPn2p/PP2Q1PP/4KP2/RN4NR b - - 2 23 ; Best move: b5c4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at d7, black pawn at e7, black pawn at f7 and black rook at g7. Black pawn at b5, black knight at c5 and white pawn at e5. Black pawn at a4, white bishop at c4, white pawn at d4, black knight at e4 and black pawn at h4. White pawn at a3, white pawn at b3, white queen at e3, white pawn at g3 and white pawn at h3. White king at e2 and white pawn at f2. White rook at a1, white knight at b1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 23. Black to move.