r2qkbnr/1bp2p1p/p2p4/1P2p1P1/1nP5/4PN2/QP1P1PP1/RNB1KBR1 b Q - 2 12
FEN state: r2qkbnr/1bp2p1p/p2p4/1P2p1P1/1nP5/4PN2/QP1P1PP1/RNB1KBR1 b Q - 2 12 ; Best move: b4a2
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black bishop at b7, black pawn at c7, black pawn at f7 and black pawn at h7. Black pawn at a6 and black pawn at d6. White pawn at b5, black pawn at e5 and white pawn at g5. Black knight at b4 and white pawn at c4. White pawn at e3 and white knight at f3. White queen at a2, white pawn at b2, white pawn at d2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 2. Full move number is 12. Black to move.