Sunder: Split Logic Puzzle

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About this game

Piles of identical blocks, and exactly one thing you can do to them: cut one pile into two.

That is the whole move list. Nothing ever moves from one pile to another, nothing ever merges back together, and no pile ever gets taller than it started. Every cut you make is permanent and the board only ever gets wider.

The board is finished when every pile on it is the same height. Since cutting is all you have, the final height is decided the moment you choose your first cut — pick wrong and you can see it coming three moves out. Undo is there for exactly that moment.

The arithmetic is simple and the ordering is not, which is the point. A pile of twelve can become two sixes or a nine and a three, and the board usually has an opinion about which.

Every board is generated and then solved before it ships, so the cut count you are aiming at is a real number rather than a guess. No timer, no way to lose, and it all works offline.
Cut a pile in two. Nothing moves, nothing merges. Finish with every pile equal.
Updated on
Oct 8, 2026
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Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, App activity and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

The level map's stops no longer sit on top of each other, so the road shows between them and the numbers are easier to read.