1nb2rk1/rppp1p2/3B4/p3p1pn/P3P1Pp/1P6/2QP1K1P/RN2NB1R b - - 10 18
FEN state: 1nb2rk1/rppp1p2/3B4/p3p1pn/P3P1Pp/1P6/2QP1K1P/RN2NB1R b - - 10 18 ; Best move: a7a6
The current state of the chess board is: Black knight at b8, black bishop at c8, black rook at f8 and black king at g8. Black rook at a7, black pawn at b7, black pawn at c7, black pawn at d7 and black pawn at f7. White bishop at d6. Black pawn at a5, black pawn at e5, black pawn at g5 and black knight at h5. White pawn at a4, white pawn at e4, white pawn at g4 and black pawn at h4. White pawn at b3. White queen at c2, white pawn at d2, white king at f2 and white pawn at h2. White rook at a1, white knight at b1, white knight at e1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 10. Full move number is 18. Black to move.