1r1qkbn1/p2pppr1/P5p1/1p3P1p/2Np2bP/2P1P3/PBQ5/R3KBNR w KQ - 0 18
FEN state: 1r1qkbn1/p2pppr1/P5p1/1p3P1p/2Np2bP/2P1P3/PBQ5/R3KBNR w KQ - 0 18 ; Best move: c4e5
The current state of the chess board is: Black rook at b8, black queen at d8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at d7, black pawn at e7, black pawn at f7 and black rook at g7. White pawn at a6 and black pawn at g6. Black pawn at b5, white pawn at f5 and black pawn at h5. White knight at c4, black pawn at d4, black bishop at g4 and white pawn at h4. White pawn at c3 and white pawn at e3. White pawn at a2, white bishop at b2 and white queen at c2. White rook at a1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 18. White to move.