Detailed instructions for working a group puzzle of type 'Unimprovable'
This is a signature puzzle named 'Unimprovable'
The 12 elements in each group of this type of puzzle are: U, N, I, M, P, R, O, V, A, B, L, and E.
Every group in the puzzle must contain exactly this set of elements.
In a Unimprovable puzzle, each row is a group numbered as shown in the figure above.
In a Unimprovable puzzle, each column is a group numbered as shown in the figure above.
In a Unimprovable puzzle, each 4x3 rectangle is a group numbered as shown in the figure above.
In a Unimprovable puzzle, each eye is a group numbered as shown in the figure above.
In a Unimprovable puzzle, the elements that make up the smile are a group and are marked with '1st' in the figure above.