r1b1k2r/p1pqpp1p/n4n1b/1pPp2p1/PP1P3P/2N1P1P1/3QNPB1/R1B1K2R b KQkq - 1 12
FEN state: r1b1k2r/p1pqpp1p/n4n1b/1pPp2p1/PP1P3P/2N1P1P1/3QNPB1/R1B1K2R b KQkq - 1 12 ; Best move: a6b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at c7, black queen at d7, black pawn at e7, black pawn at f7 and black pawn at h7. Black knight at a6, black knight at f6 and black bishop at h6. Black pawn at b5, white pawn at c5, black pawn at d5 and black pawn at g5. White pawn at a4, white pawn at b4, white pawn at d4 and white pawn at h4. White knight at c3, white pawn at e3 and white pawn at g3. White queen at d2, white knight at e2, white pawn at f2 and white bishop at g2. White rook at a1, white bishop at c1, white king at e1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 1. Full move number is 12. Black to move.