Play Sum Lines on your Kindle

Puzzle · free · no jailbreak · built for e-ink

Play Sum Lines now

How to play

Put the digits 1 to 9 in the empty squares. A clue like A11 means the row to its right must add up to 11; D7 means the column below it must add up to 7. No digit repeats inside a single run. Tap a square to cycle it through 1-9 and back to blank, no keyboard needed.

Like every game in KindleHub, Sum Lines is drawn once and only the parts that change are redrawn, so the e-ink screen does not flash between moves. It runs in the Kindle's built-in browser and in any phone, tablet or desktop browser.

How to open it on your Kindle

  1. On the Kindle, open the menu and choose Web Browser (on some models it is under Experimental or the … menu).
  2. Type kindlehub.pro into the address bar.
  3. Bookmark it. That is the whole setup: nothing to install, no jailbreak, and a firmware update cannot break it.

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