Fixed: Technique Rush asks in your language and accepts every correct cell. A hint now first tells you where to look instead of naming the technique right away. The notes that matter are highlighted, and every further hint narrows the spot. What a hint does for you counts partly for your rating. In practice a new button narrows it down, and every lesson shows how to find the pattern. New: at the end of each month I ask briefly how you like the app.

Fixed: in practice, the explanation now names cells the same way as everywhere else. Your rating now runs from about 500 to 2500, and every level has its own range. Solve a level reliably and you climb to its top; to go higher, take on harder puzzles. Your number jumps once with this update, your skill stays the same. On tall phones the app makes better use of the space.

Fixed: in the introductory puzzle, a wrong digit is now marked straight away. Before, it only showed up once a box had no room left for a number, and the puzzle looked broken. When you share a result, the link now takes people to the App Store. New: if you like, the candidates are already filled in when a puzzle begins. Turn it on in the settings. Every text has also been rewritten: hints, lessons, help and the notes after each puzzle.