rn3k1r/4b1pp/p1ppb2n/1p2Np2/P1P1pP1P/1P6/R3P1P1/2BK1B1R b - - 0 18
FEN state: rn3k1r/4b1pp/p1ppb2n/1p2Np2/P1P1pP1P/1P6/R3P1P1/2BK1B1R b - - 0 18 ; Best move: d6e5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at f8 and black rook at h8. Black bishop at e7, black pawn at g7 and black pawn at h7. Black pawn at a6, black pawn at c6, black pawn at d6, black bishop at e6 and black knight at h6. Black pawn at b5, white knight at e5 and black pawn at f5. White pawn at a4, white pawn at c4, black pawn at e4, white pawn at f4 and white pawn at h4. White pawn at b3. White rook at a2, white pawn at e2 and white pawn at g2. White bishop at c1, white king at d1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 18. Black to move.