Junior On-Sets Variations
SPECIAL RULE: The following three variations are in effect for all shakes.
- Multiple operations Every
operation sign in Required or Permitted may be used many times in a Solution
(Set-Name or Restriction or both).
- U and ñ interchangeableAny
U may represent U or ñ, and any ñ may represent ñ or U.
(Note: ñ means intersection.)
- V and /\ interchangeable Any
V may represent V or /\, and any /\ may represent /\ or V.
Junior players may choose any of the following variations.
- 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.
- Wild cube The ___ cube may
represent any symbol on the cubes except a digit. The ___ cube must stand for
the samesymbol everywhere it occurs (Restriction(s) and Set-Name). 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.
- Two operations Each Solution
must contain at least two operation symbols. The operation symbols are U, ñ,
-, and '.
- No null Restrictions Each
Restriction must remove at least one card from the Universe. In a chain Restriction
this variation is satisfied if any part of the chain removes a card.
- 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.
- Double set Each card in the
Universe that is contained in the ___ set will count double for all Solutions.
The player selecting this variation specifies which non-empty set of cards that
does not equal the Universe counts double. The set must be named using an expression
consisting of at most four symbols (not counting grouping symbols).
- Required card The player
selecting this variation specifies one card in the Universe which must be in
the Set-Name of any Solution.
- Forbidden card The player
selecting this variation specifies one card in the Universe which may not
be in the Set-Name of any Solution.
- Blank card wild Each Solution-writer
must specify in writing which colors, if any, are on the blank card. This variation
may be chosen only if the blank card has been dealt.
- Absolute value Any upside-down
cube in the Goal may be interpreted as right-side-up by a Solution-writer.
Senior Variations
On-Sets home page