rnb1kb2/2p2pr1/p2pn3/4p1PP/5PR1/PqN2N2/2PPP1B1/1R1QK3 b q - 7 20
FEN state: rnb1kb2/2p2pr1/p2pn3/4p1PP/5PR1/PqN2N2/2PPP1B1/1R1QK3 b q - 7 20 ; Best move: b3a3
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 pawn at c7, black pawn at f7 and black rook at g7. Black pawn at a6, black pawn at d6 and black knight at e6. Black pawn at e5, white pawn at g5 and white pawn at h5. White pawn at f4 and white rook at g4. White pawn at a3, black queen at b3, white knight at c3 and white knight at f3. White pawn at c2, white pawn at d2, white pawn at e2 and white bishop at g2. White rook at b1, white queen at d1 and white king at e1. Black queenside is the only castle move available. Half move number is 7. Full move number is 20. Black to move.