r4b1r/np1kpbpp/B4n2/2p5/N4p1P/1P2P3/P1PP1PP1/RNBK2R1 b - - 10 22
FEN state: r4b1r/np1kpbpp/B4n2/2p5/N4p1P/1P2P3/P1PP1PP1/RNBK2R1 b - - 10 22 ; Best move: b7a6
The current state of the chess board is: Black rook at a8, black bishop at f8 and black rook at h8. Black knight at a7, black pawn at b7, black king at d7, black pawn at e7, black bishop at f7, black pawn at g7 and black pawn at h7. White bishop at a6 and black knight at f6. Black pawn at c5. White knight at a4, black pawn at f4 and white pawn at h4. White pawn at b3 and white pawn at e3. White pawn at a2, white pawn at c2, white pawn at d2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white king at d1 and white rook at g1. Both players have exhausted their castles. Half move number is 10. Full move number is 22. Black to move.