Online since 2002. Over 3300 puzzles, 2600 worldwide members, and 270,000 messages.

Grégoire Pfennig (RubixFreakGreg)
10x10x10 (flat)A customly designed 10x10x10 with flat surfaces.
12x12x12 (flat)The second 12x12x12 ever made and the first with flat surfaces.
1x3x5 BarrelThe first fuly functional 1x3x5. In shape of a barrel.

1x6x6Another cuboid from the series made by Grégoire Pfennig and presented in early 2012.
1x8x8Another cuboid from the series made by Grégoire Pfennig and presented in early 2012.
2x2x11A straight forwardly designed cuboid of ridiculous dimensions.

2x2x13A straight forwardly designed cuboid of ridiculous dimensions.
2x2x14Another case of puzzle extremism combined with a collector who desperately wants to extends his collection.
2x4x6Another fully functional cuboid designed by Grégoire Pfennig.

2x6x6Another cuboid which had been thought to be impossible in the past.
3x3x10A 3x3x10 with the shape of a true cuboid.
3x3x11The name describes it perfectly. Two years earlier this puzzle would have deemed impossible.

3x3x14A half regular cuboid from Grégoire Pfennigs run of cuboids of 2012.
3x4x6 (proportional)Another cuboid designed by Grégoire Pfennig. compared with the predecessor it is proportional.
3x5x6Another cuboid which for a long time was not known to be missing.


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