rn3b1r/pbp3p1/4kn2/1p1p1pqp/P4B1N/1PP1P1PP/4KP2/RN1Q1B1R w - - 0 20
FEN state: rn3b1r/pbp3p1/4kn2/1p1p1pqp/P4B1N/1PP1P1PP/4KP2/RN1Q1B1R w - - 0 20 ; Best move: f4g5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at f8 and black rook at h8. Black pawn at a7, black bishop at b7, black pawn at c7 and black pawn at g7. Black king at e6 and black knight at f6. Black pawn at b5, black pawn at d5, black pawn at f5, black queen at g5 and black pawn at h5. White pawn at a4, white bishop at f4 and white knight at h4. White pawn at b3, white pawn at c3, white pawn at e3, white pawn at g3 and white pawn at h3. White king at e2 and white pawn at f2. White rook at a1, white knight at b1, white queen at d1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.