r2k2r1/pP1p2pp/1pnN4/1Pb1p3/8/2p2P2/R1PP1BBP/1NqQ1RK1 b - - 0 20
FEN state: r2k2r1/pP1p2pp/1pnN4/1Pb1p3/8/2p2P2/R1PP1BBP/1NqQ1RK1 b - - 0 20 ; Best move: a8b8
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, white pawn at b7, black pawn at d7, black pawn at g7 and black pawn at h7. Black pawn at b6, black knight at c6 and white knight at d6. White pawn at b5, black bishop at c5 and black pawn at e5. Black pawn at c3 and white pawn at f3. White rook at a2, white pawn at c2, white pawn at d2, white bishop at f2, white bishop at g2 and white pawn at h2. White knight at b1, black queen at c1, white queen at d1, white rook at f1 and white king at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. Black to move.