Twin & triple gesture

[hklene]

Hello

I want to suggest a feature for eliminating pencil marks in the same row or column with a twin or triple.

I'll attach a screenshot.

I want to touch cell (2,2) and drag to (4,2) or backwards. This shall remove the candidates 2&4&7 from the whole row, except those three cells.

Eventually the cells are not directly adjacent. So the algorithm is something like:

• take the starting cell A, check if it contains 2 or 3 pencil marks
• take the stopping cell B, check if it is on same row or column as A, contains 2 or 3 pencil marks that overlap with A
• if A & B are not twins, search cell C in-between A & B containing only the three candidates.
• remove identified candidates from same row/column except from ABC

Singleton's are already handled well by a single click. Quadruples on the other hand are hard to spot and often leave a twin or triple that could be entered with this new gesture instead.

[hklene]

[queler]

I don't think I'd add something like that, but I may add something similiar, to have multiple cell selection and add or remove candidates for the selection