r1b1kbn1/pp2p1pr/3p1n2/2p2p2/1q1P3p/PP2P2P/1RP1KPP1/1NB2BNR b q - 0 12
FEN state: r1b1kbn1/pp2p1pr/3p1n2/2p2p2/1q1P3p/PP2P2P/1RP1KPP1/1NB2BNR b q - 0 12 ; Best move: b4b6
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at b7, black pawn at e7, black pawn at g7 and black rook at h7. Black pawn at d6 and black knight at f6. Black pawn at c5 and black pawn at f5. Black queen at b4, white pawn at d4 and black pawn at h4. White pawn at a3, white pawn at b3, white pawn at e3 and white pawn at h3. White rook at b2, white pawn at c2, white king at e2, white pawn at f2 and white pawn at g2. White knight at b1, white bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 12. Black to move.