1nb1qb1r/rp2k1pp/2p1p1n1/p1Ppp3/P4P2/2N5/RP1P1QPP/2BKRBN1 w - - 2 20
FEN state: 1nb1qb1r/rp2k1pp/2p1p1n1/p1Ppp3/P4P2/2N5/RP1P1QPP/2BKRBN1 w - - 2 20 ; Best move: f4e5
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at e8, black bishop at f8 and black rook at h8. Black rook at a7, black pawn at b7, black king at e7, black pawn at g7 and black pawn at h7. Black pawn at c6, black pawn at e6 and black knight at g6. Black pawn at a5, white pawn at c5, black pawn at d5 and black pawn at e5. White pawn at a4 and white pawn at f4. White knight at c3. White rook at a2, white pawn at b2, white pawn at d2, white queen at f2, white pawn at g2 and white pawn at h2. White bishop at c1, white king at d1, white rook at e1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 2. Full move number is 20. White to move.