rnbqk2r/p4nb1/3pp3/2p1pBp1/PPP5/B1N3p1/R2QPP1P/4K2R w Kq - 0 20
FEN state: rnbqk2r/p4nb1/3pp3/2p1pBp1/PPP5/B1N3p1/R2QPP1P/4K2R w Kq - 0 20 ; Best move: f5e4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black rook at h8. Black pawn at a7, black knight at f7 and black bishop at g7. Black pawn at d6 and black pawn at e6. Black pawn at c5, black pawn at e5, white bishop at f5 and black pawn at g5. White pawn at a4, white pawn at b4 and white pawn at c4. White bishop at a3, white knight at c3 and black pawn at g3. White rook at a2, white queen at d2, white pawn at e2, white pawn at f2 and white pawn at h2. White king at e1 and white rook at h1. White kingside and black queenside castles are available. Half move number is 0. Full move number is 20. White to move.