rnbq1kn1/2pp1r2/p4p1P/1p2pPB1/2NPB2p/2P1P3/PP5P/1R1QK1NR b K - 0 18
FEN state: rnbq1kn1/2pp1r2/p4p1P/1p2pPB1/2NPB2p/2P1P3/PP5P/1R1QK1NR b K - 0 18 ; Best move: b5c4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at f8 and black knight at g8. Black pawn at c7, black pawn at d7 and black rook at f7. Black pawn at a6, black pawn at f6 and white pawn at h6. Black pawn at b5, black pawn at e5, white pawn at f5 and white bishop at g5. White knight at c4, white pawn at d4, white bishop at e4 and black pawn at h4. White pawn at c3 and white pawn at e3. White pawn at a2, white pawn at b2 and white pawn at h2. White rook at b1, white queen at d1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 18. Black to move.