r1bq1b1r/1Bp1kppp/3ppn2/p4n2/1Q6/1PP1P2P/P2PNPPR/RNB1K3 b Q - 4 12
FEN state: r1bq1b1r/1Bp1kppp/3ppn2/p4n2/1Q6/1PP1P2P/P2PNPPR/RNB1K3 b Q - 4 12 ; Best move: a5b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8 and black rook at h8. White bishop at b7, black pawn at c7, black king at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at d6, black pawn at e6 and black knight at f6. Black pawn at a5 and black knight at f5. White queen at b4. White pawn at b3, white pawn at c3, white pawn at e3 and white pawn at h3. White pawn at a2, white pawn at d2, white knight at e2, white pawn at f2, white pawn at g2 and white rook at h2. White rook at a1, white knight at b1, white bishop at c1 and white king at e1. White queenside is the only castle move available. Half move number is 4. Full move number is 12. Black to move.