rn2r3/1bq2kbp/pp3p1n/1PpppBp1/P2P2P1/N6N/2PQPP1P/2K1R2R b - - 0 20
FEN state: rn2r3/1bq2kbp/pp3p1n/1PpppBp1/P2P2P1/N6N/2PQPP1P/2K1R2R b - - 0 20 ; Best move: b8d7
The current state of the chess board is: Black rook at a8, black knight at b8 and black rook at e8. Black bishop at b7, black queen at c7, black king at f7, black bishop at g7 and black pawn at h7. Black pawn at a6, black pawn at b6, black pawn at f6 and black knight at h6. White pawn at b5, black pawn at c5, black pawn at d5, black pawn at e5, white bishop at f5 and black pawn at g5. White pawn at a4, white pawn at d4 and white pawn at g4. White knight at a3 and white knight at h3. White pawn at c2, white queen at d2, white pawn at e2, white pawn at f2 and white pawn at h2. White king at c1, white rook at e1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. Black to move.