PUZRU is designed as one continuous puzzle world rather than an endless list of unrelated generated boards. The connection is the Chain: exactly six solved positions survive from one completed puzzle into the next.
The first solution changes the world state
While a puzzle is OPEN, the first valid solution accepted by the authority becomes the Discoverer. That single event starts the shared contribution deadline for everyone.
The completed puzzle becomes permanent history
When the contribution window ends, the completed result, claims digest and Chain hash are recorded. The public Puzzle Archive can then show the board and its place in the sequence.
Exactly six values continue
The generator selects one carry position from every row and one from every column. Those six values are fixed in the next solution, while all thirty non-carry positions are required to change value from the previous solution.
The next puzzle still passes the full quality gate
The carry relationship does not bypass puzzle quality. The new cage layout must still produce one exact solution and a logical no-guess solve path before it can become a future live puzzle.
Put the idea into practice
The fastest way to understand the interaction between row, column and cage constraints is to solve a board. Start in the 200-puzzle progressive Training Room, then enter the live world whenever you are ready to race for Discoverer.