r1b2br1/1ppk1pp1/p2p4/3nP1qp/P2P2PP/8/1PPB1K2/RN2n1NR b - - 1 20
FEN state: r1b2br1/1ppk1pp1/p2p4/3nP1qp/P2P2PP/8/1PPB1K2/RN2n1NR b - - 1 20 ; Best move: g5g4
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8 and black rook at g8. Black pawn at b7, black pawn at c7, black king at d7, black pawn at f7 and black pawn at g7. Black pawn at a6 and black pawn at d6. Black knight at d5, white pawn at e5, black queen at g5 and black pawn at h5. White pawn at a4, white pawn at d4, white pawn at g4 and white pawn at h4. White pawn at b2, white pawn at c2, white bishop at d2 and white king at f2. White rook at a1, white knight at b1, black knight at e1, 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. Black to move.