Killer Sudoku CTC

The puzzles are well designed and extremely challenging! Unfortunately, if you’re not as smart as the Cracking The Cryptic crew, the in-game hints often seem to be focused on conserving space over explaining their logic, which often leads to hints asserting facts not in obvious evidence, which doesn’t help the user understand what they’re doing wrong.

The app is beautiful, however I don’t like the puzzles so much. Most of them require brute force solving. By that I mean you have to take a guess and keep going until you hit a contradiction, then you guess again.

All of CTC's Sudoku apps have beautiful puzzles and excellent tools. My only request for their Killer (and Sandwich) Sudoku is to include list exclusion (in the given lists of sums) in the undo stack. I will often run aground and need to undo myself back a bit, and I lose my thread of deduction when the lists I've grayed out don't revert. If this is a known challenge for UX (it might appear that nothing happened), I would suggest showing (and flashing?) the sums panel when undoing those exclusio

The puzzle clears itself the moment you finish it so there’s no time to screen shot the solution.

Love the app, but can’t find a way to reset it and start over again