Blog

• A Sudoku hint that teaches September 2, 2026

  Most hint buttons just fill in the answer. Sudoku Isle only offers a number when a real technique can explain it.

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• The email that fixed ReTab May 25, 2026

  A visually impaired user emailed about ReTab being unusable with VoiceOver. The fix took an afternoon — and uncovered a wrong assumption I'd carried for a year.

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