rnB1k2r/4p3/5p1p/p3n3/2NqP1pP/6P1/PP6/R1BQ1KNR b kq - 0 18
FEN state: rnB1k2r/4p3/5p1p/p3n3/2NqP1pP/6P1/PP6/R1BQ1KNR b kq - 0 18 ; Best move: d4d1
The current state of the chess board is: Black rook at a8, black knight at b8, white bishop at c8, black king at e8 and black rook at h8. Black pawn at e7. Black pawn at f6 and black pawn at h6. Black pawn at a5 and black knight at e5. White knight at c4, black queen at d4, white pawn at e4, black pawn at g4 and white pawn at h4. White pawn at g3. White pawn at a2 and white pawn at b2. White rook at a1, white bishop at c1, white queen at d1, white king at f1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 18. Black to move.