r2k2r1/pp3p2/n2p1np1/2BNp2p/1b6/1P1Q1N1B/2P1P2P/3R1K1R b - - 2 20
FEN state: r2k2r1/pp3p2/n2p1np1/2BNp2p/1b6/1P1Q1N1B/2P1P2P/3R1K1R b - - 2 20 ; Best move: a6c5
The current state of the chess board is: Black rook at a8, black king at d8 and black rook at g8. Black pawn at a7, black pawn at b7 and black pawn at f7. Black knight at a6, black pawn at d6, black knight at f6 and black pawn at g6. White bishop at c5, white knight at d5, black pawn at e5 and black pawn at h5. Black bishop at b4. White pawn at b3, white queen at d3, white knight at f3 and white bishop at h3. White pawn at c2, white pawn at e2 and white pawn at h2. White rook at d1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 20. Black to move.