rnb1kb2/1n2p1pr/pq1p4/2p4P/3PPpp1/p1P2P1B/1P5N/RNB2KR1 b q - 2 23
FEN state: rnb1kb2/1n2p1pr/pq1p4/2p4P/3PPpp1/p1P2P1B/1P5N/RNB2KR1 b q - 2 23 ; Best move: a3b2
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black bishop at f8. Black knight at b7, black pawn at e7, black pawn at g7 and black rook at h7. Black pawn at a6, black queen at b6 and black pawn at d6. Black pawn at c5 and white pawn at h5. White pawn at d4, white pawn at e4, black pawn at f4 and black pawn at g4. Black pawn at a3, white pawn at c3, white pawn at f3 and white bishop at h3. White pawn at b2 and white knight at h2. White rook at a1, white knight at b1, white bishop at c1, white king at f1 and white rook at g1. Black queenside is the only castle move available. Half move number is 2. Full move number is 23. Black to move.