rnbk1b2/pp2np1r/1P2p1p1/3p1q1p/2p1P1B1/B1P2PP1/P2P1K1P/RN2Q1NR w - - 2 18
FEN state: rnbk1b2/pp2np1r/1P2p1p1/3p1q1p/2p1P1B1/B1P2PP1/P2P1K1P/RN2Q1NR w - - 2 18 ; Best move: e4f5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at d8 and black bishop at f8. Black pawn at a7, black pawn at b7, black knight at e7, black pawn at f7 and black rook at h7. White pawn at b6, black pawn at e6 and black pawn at g6. Black pawn at d5, black queen at f5 and black pawn at h5. Black pawn at c4, white pawn at e4 and white bishop at g4. White bishop at a3, white pawn at c3, white pawn at f3 and white pawn at g3. White pawn at a2, white pawn at d2, white king at f2 and white pawn at h2. White rook at a1, white knight at b1, white queen at e1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 18. White to move.