flummoxed: Thank you. As I can see, there is this set of handicaps:

1. Six Piece Handicap - White removes rook, bishop, both lances, and both knights.
2. Five Piece Handicap - White removes rook, bishop, both lances, and either knight.
3. Four Piece Handicap - White removes rook, bishop, and both lances.
4. Two Piece Handicap - White removes rook and bishop.
5. Rook and Lance Handicap - White removes rook and his left lance.
6. Rook Handicap - White removes his rook.
7. Bishop Handicap - White removes his bishop.
8. Lance Handicap - White removes his left lance.

The gnushogi site describes an eight-piece handicap too. Should it be added to the list?