rn4nr/4bkpp/5p2/ppqp4/3Pp1P1/P3B3/NP1KPPb1/R2Q1BNR w - - 1 20
FEN state: rn4nr/4bkpp/5p2/ppqp4/3Pp1P1/P3B3/NP1KPPb1/R2Q1BNR w - - 1 20 ; Best move: d4c5
The current state of the chess board is: Black rook at a8, black knight at b8, black knight at g8 and black rook at h8. Black bishop at e7, black king at f7, black pawn at g7 and black pawn at h7. Black pawn at f6. Black pawn at a5, black pawn at b5, black queen at c5 and black pawn at d5. White pawn at d4, black pawn at e4 and white pawn at g4. White pawn at a3 and white bishop at e3. White knight at a2, white pawn at b2, white king at d2, white pawn at e2, white pawn at f2 and black bishop at g2. White rook at a1, white queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 20. White to move.