r1bqkb1r/2ppp2p/np5n/p7/PP1P1ppP/3Q2P1/N1P1PPBR/1RB1K1N1 b q - 3 12
FEN state: r1bqkb1r/2ppp2p/np5n/p7/PP1P1ppP/3Q2P1/N1P1PPBR/1RB1K1N1 b q - 3 12 ; Best move: a8a7
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at d7, black pawn at e7 and black pawn at h7. Black knight at a6, black pawn at b6 and black knight at h6. Black pawn at a5. White pawn at a4, white pawn at b4, white pawn at d4, black pawn at f4, black pawn at g4 and white pawn at h4. White queen at d3 and white pawn at g3. White knight at a2, white pawn at c2, white pawn at e2, white pawn at f2, white bishop at g2 and white rook at h2. White rook at b1, white bishop at c1, white king at e1 and white knight at g1. Black queenside is the only castle move available. Half move number is 3. Full move number is 12. Black to move.