r1bq2nr/1p1pk3/n6p/p1p1pp2/P1N1N2R/3P1PP1/RPPBP3/3QKBb1 w - - 3 18
FEN state: r1bq2nr/1p1pk3/n6p/p1p1pp2/P1N1N2R/3P1PP1/RPPBP3/3QKBb1 w - - 3 18 ; Best move: e4d6
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at d7 and black king at e7. Black knight at a6 and black pawn at h6. Black pawn at a5, black pawn at c5, black pawn at e5 and black pawn at f5. White pawn at a4, white knight at c4, white knight at e4 and white rook at h4. White pawn at d3, white pawn at f3 and white pawn at g3. White rook at a2, white pawn at b2, white pawn at c2, white bishop at d2 and white pawn at e2. White queen at d1, white king at e1, white bishop at f1 and black bishop at g1. Both players have exhausted their castles. Half move number is 3. Full move number is 18. White to move.