rn3bn1/4pk1r/pq1p1p1p/2pb1PpP/1R4P1/P1N1P2N/1BPP2Q1/R3KB2 b Q - 6 20
FEN state: rn3bn1/4pk1r/pq1p1p1p/2pb1PpP/1R4P1/P1N1P2N/1BPP2Q1/R3KB2 b Q - 6 20 ; Best move: d5g2
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at f8 and black knight at g8. Black pawn at e7, black king at f7 and black rook at h7. Black pawn at a6, black queen at b6, black pawn at d6, black pawn at f6 and black pawn at h6. Black pawn at c5, black bishop at d5, white pawn at f5, black pawn at g5 and white pawn at h5. White rook at b4 and white pawn at g4. White pawn at a3, white knight at c3, white pawn at e3 and white knight at h3. White bishop at b2, white pawn at c2, white pawn at d2 and white queen at g2. White rook at a1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 6. Full move number is 20. Black to move.