rnq4r/2k2p2/p1p2npp/PpP1p3/NP1PbbPP/B4B2/5P2/R2Q1KNR w - - 0 20
FEN state: rnq4r/2k2p2/p1p2npp/PpP1p3/NP1PbbPP/B4B2/5P2/R2Q1KNR w - - 0 20 ; Best move: a4b6
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at c8 and black rook at h8. Black king at c7 and black pawn at f7. Black pawn at a6, black pawn at c6, black knight at f6, black pawn at g6 and black pawn at h6. White pawn at a5, black pawn at b5, white pawn at c5 and black pawn at e5. White knight at a4, white pawn at b4, white pawn at d4, black bishop at e4, black bishop at f4, white pawn at g4 and white pawn at h4. White bishop at a3 and white bishop at f3. White pawn at f2. White rook at a1, white queen at d1, white king at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.