### Elementary On-Sets Variations

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1. Required cube The Solution must
contain a ___ cube. The player selecting this variation specifies which
non-digit symbol from the Resources fills the blank in the previous
sentence.
2. Wild cube The ___ cube may
represent any symbol on the cubes except a digit. The ___ cube must stand
for the same symbol everywhere it occurs in the Solution. The player
selecting this variation specifies which cube from the Resources is wild.
The wild cube may not be a digit. Each Solution-writer must specify in
writing the interpretation of the wild cube if it stands for anything other
than itself in his Solution.
3. U and ñ interchangeable Any
U may represent U or ñ, and any ñ may represent ñ or U. (Note: ñ means intersection.)
4. V and /\ interchangeable Any V may
represent V or /\, and any /\ may represent /\ or V.
5. Two operations Each Solution must
contain at least two operation symbols. The operation symbols are U,
ñ, -, and '.
6. Multiple operations
Every operation sign in Required or Permitted may be
used many times in any Solution.
7. Shift from Permitted On your turn
you may transfer a cube in Permitted to either Required or Forbidden.
This move takes the place of your regular move.
Middle Variations
On-Sets home page