Items Authored by Alfred Pfeiffer
- CheGo. Drop chess pieces on the board to control the largest number of squares. (8x8, Cells: 64) By Alfred Pfeiffer.
- Chess on a board with 37 squares. Game with full Chess arrays minus a Pawn on a 37 square board without any corners. (Cells: 37) Author: Alfred Pfeiffer and Hans L. Bodlaender. Inventor: Alfred Pfeiffer.
- Chess99. Large progressive chess variant, where pieces gain progressive capabilities as the game develops. (9x11, Cells: 99) By Alfred Pfeiffer.
- ChessNim. Drop chess pieces and reduce the number of unattacked squares on the board. (8x8, Cells: 64) By Alfred Pfeiffer.
- Multichess. Four player chess variant. Author: Alfred Pfeiffer. Inventor: Dietrich Gläß.
- Schaaknim (Chess Nim). Spelers zetten stukken op het bord zodat het aantal lege niet-aangevallen velden vermindert. De laatste die dat doet wint. (Dutch Language) Author: Alfred Pfeiffer and Jos Jansen of Lorkeers. Inventor: Alfred Pfeiffer.
- Schago (Chego). Spelers zetten stukken op het bord, zodat ze zoveel mogelijk velden controleren (Dutch Language) Author: Alfred Pfeiffer and Jos Jansen of Lorkeers. Inventor: Alfred Pfeiffer.
- Blizzard Chess . Chess, as if it had been developed by the software industry (with all patch levels). Author: Alfred Pfeiffer. Inventor: Blarney.
- Chessence . Variant on a 9 x 6 board with 8 missing squares, immobile Kings, and 9 pieces whose movement depends on their spatial relation. Author: Alfred Pfeiffer. Inventor: Jim Winslow.