rnb1k1r1/p2pb1p1/1ppn1p2/4p1NP/1P1P3P/P7/1B1QPP2/qR2KB1R b Kq - 3 18
FEN state: rnb1k1r1/p2pb1p1/1ppn1p2/4p1NP/1P1P3P/P7/1B1QPP2/qR2KB1R b Kq - 3 18 ; Best move: a1b1
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black rook at g8. Black pawn at a7, black pawn at d7, black bishop at e7 and black pawn at g7. Black pawn at b6, black pawn at c6, black knight at d6 and black pawn at f6. Black pawn at e5, white knight at g5 and white pawn at h5. White pawn at b4, white pawn at d4 and white pawn at h4. White pawn at a3. White bishop at b2, white queen at d2, white pawn at e2 and white pawn at f2. Black queen at a1, white rook at b1, white king at e1, white bishop at f1 and white rook at h1. White kingside and black queenside castles are available. Half move number is 3. Full move number is 18. Black to move.