r1b1kb2/n2ppprn/1p4P1/p5P1/1PN1K2p/2P4P/PQ1P4/1RB2BNR b q - 1 18
FEN state: r1b1kb2/n2ppprn/1p4P1/p5P1/1PN1K2p/2P4P/PQ1P4/1RB2BNR b q - 1 18 ; Best move: c8b7
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black bishop at f8. Black knight at a7, black pawn at d7, black pawn at e7, black pawn at f7, black rook at g7 and black knight at h7. Black pawn at b6 and white pawn at g6. Black pawn at a5 and white pawn at g5. White pawn at b4, white knight at c4, white king at e4 and black pawn at h4. White pawn at c3 and white pawn at h3. White pawn at a2, white queen at b2 and white pawn at d2. White rook at b1, white bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 18. Black to move.