r3kb1r/B2p2p1/2p1p2p/1pn2p1P/N4N2/R2P3R/1PP1PPP1/Q3Kn2 b q - 2 23
FEN state: r3kb1r/B2p2p1/2p1p2p/1pn2p1P/N4N2/R2P3R/1PP1PPP1/Q3Kn2 b q - 2 23 ; Best move: c5a4
The current state of the chess board is: Black rook at a8, black king at e8, black bishop at f8 and black rook at h8. White bishop at a7, black pawn at d7 and black pawn at g7. Black pawn at c6, black pawn at e6 and black pawn at h6. Black pawn at b5, black knight at c5, black pawn at f5 and white pawn at h5. White knight at a4 and white knight at f4. White rook at a3, white pawn at d3 and white rook at h3. White pawn at b2, white pawn at c2, white pawn at e2, white pawn at f2 and white pawn at g2. White queen at a1, white king at e1 and black knight at f1. Black queenside is the only castle move available. Half move number is 2. Full move number is 23. Black to move.