r1b3nr/pppkb3/B2p4/5pp1/PnP1p1p1/2qPPP2/1P3K1P/RNBQ2NR w - - 1 20
FEN state: r1b3nr/pppkb3/B2p4/5pp1/PnP1p1p1/2qPPP2/1P3K1P/RNBQ2NR w - - 1 20 ; Best move: a6b5
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black king at d7 and black bishop at e7. White bishop at a6 and black pawn at d6. Black pawn at f5 and black pawn at g5. White pawn at a4, black knight at b4, white pawn at c4, black pawn at e4 and black pawn at g4. Black queen at c3, white pawn at d3, white pawn at e3 and white pawn at f3. White pawn at b2, white king at f2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, 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.