4kb2/rb1pppp1/2p4n/pq5r/1pPnP1p1/NP6/P3QP1P/R1B2KRB w - - 0 20
FEN state: 4kb2/rb1pppp1/2p4n/pq5r/1pPnP1p1/NP6/P3QP1P/R1B2KRB w - - 0 20 ; Best move: a3b5
The current state of the chess board is: Black king at e8 and black bishop at f8. Black rook at a7, black bishop at b7, black pawn at d7, black pawn at e7, black pawn at f7 and black pawn at g7. Black pawn at c6 and black knight at h6. Black pawn at a5, black queen at b5 and black rook at h5. Black pawn at b4, white pawn at c4, black knight at d4, white pawn at e4 and black pawn at g4. White knight at a3 and white pawn at b3. White pawn at a2, white queen at e2, white pawn at f2 and white pawn at h2. White rook at a1, white bishop at c1, white king at f1, white rook at g1 and white bishop at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.