r1b2bnr/pp6/n2pk3/4Pppp/1PP2PP1/3BB2P/q7/RN1QK1NR b - - 0 18
FEN state: r1b2bnr/pp6/n2pk3/4Pppp/1PP2PP1/3BB2P/q7/RN1QK1NR b - - 0 18 ; Best move: a2a1
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7 and black pawn at b7. Black knight at a6, black pawn at d6 and black king at e6. White pawn at e5, black pawn at f5, black pawn at g5 and black pawn at h5. White pawn at b4, white pawn at c4, white pawn at f4 and white pawn at g4. White bishop at d3, white bishop at e3 and white pawn at h3. Black queen at a2. White rook at a1, white knight at b1, white queen at d1, white king at e1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 18. Black to move.