The April 21, 2010 article introduced KENKEN for iPhone and linked to App Store ID 318957616. Its short written introduction positioned the game as a number puzzle with a mathematical emphasis, alongside an embedded review video.
The archived product panel contains missing metadata, so this reconstruction does not guess a seller, release date or current download destination. The article title and original App Store identifier preserve the product reference that survives.
Explain a move before making it
For any constraint-based number puzzle, it helps to separate a move supported by the rules from one made simply because it looks plausible. Ask which condition rules out the alternatives and whether the new entry affects another part of the board.
Writing down that reasoning, even briefly, can make a later correction more useful. If a contradiction appears, you can revisit the assumption instead of restarting without understanding what happened.
Keep the historical evidence in proportion
The surviving introduction does not document puzzle counts, difficulty settings or an offline mode. Nor does an enthusiastic description prove a measurable improvement in cognitive ability.
The restored page is therefore a concise record of the particular KENKEN app reviewed at this URL. It offers a way to think about deliberate puzzle solving without adding unsupported features or treating the old listing as a current product specification.