r1b3r1/pp1p2pp/nk5n/R1p1Pp2/2P1P3/1P1K1PPP/3NB3/2Q3NR w - - 1 18
FEN state: r1b3r1/pp1p2pp/nk5n/R1p1Pp2/2P1P3/1P1K1PPP/3NB3/2Q3NR w - - 1 18 ; Best move: a5a4
The current state of the chess board is: Black rook at a8, black bishop at c8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at d7, black pawn at g7 and black pawn at h7. Black knight at a6, black king at b6 and black knight at h6. White rook at a5, black pawn at c5, white pawn at e5 and black pawn at f5. White pawn at c4 and white pawn at e4. White pawn at b3, white king at d3, white pawn at f3, white pawn at g3 and white pawn at h3. White knight at d2 and white bishop at e2. White queen at c1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 18. White to move.