r1b1kb1r/p1p1p2p/nq3np1/1p1p1P2/P4P2/R1NP4/1PP1PN1P/2BQKB1R b Kkq - 6 12
FEN state: r1b1kb1r/p1p1p2p/nq3np1/1p1p1P2/P4P2/R1NP4/1PP1PN1P/2BQKB1R b Kkq - 6 12 ; Best move: b5b4
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 rook at h8. Black pawn at a7, black pawn at c7, black pawn at e7 and black pawn at h7. Black knight at a6, black queen at b6, black knight at f6 and black pawn at g6. Black pawn at b5, black pawn at d5 and white pawn at f5. White pawn at a4 and white pawn at f4. White rook at a3, white knight at c3 and white pawn at d3. White pawn at b2, white pawn at c2, white pawn at e2, white knight at f2 and white pawn at h2. White bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside, black kingside and black queenside castles are available. Half move number is 6. Full move number is 12. Black to move.