Mark A. Durham

Engel's Enigma is a circle puzzle. Its difficulty lies somewhere between the 15 Puzzle and the cube puzzle of Ernő Rubik. Like those puzzles, the goal …

Rings of Saturn is a game for 1 to 4 players. Each player commands a fleet of five ships seeking to dock with their home base. Ships can only move for …

Rings of Saturn is a game for 1 to 4 players. Each player commands a fleet of five ships seeking to dock with their home base. Ships can only move for …

Engel's Enigma is a circle puzzle invented by Douglas A. Engel. In terms of difficulty, the puzzle lies somewhere between the 15 Puzzle and the cube p …

Engel's Enigma is a circle puzzle. Its difficulty lies somewhere between the 15 Puzzle and the cube puzzle of Ernő Rubik. Like those puzzles, the goal …