The world has one puzzle.
Solve it first.
Every live player gets the same 6×6 cage-sum logic puzzle. Your board stays private. The world state does not. Become the Discoverer, join the Chain, and come back to chase the monthly Crown.
No download. One free practice. Passkey sign-in for the live world.
Every solve changes something.
AllSolveOne is built around a shared event, not isolated boards. That means urgency before discovery, participation after it, and continuity when the next puzzle opens.
Read the grid. Beat the clock you cannot see.
Rows, columns and cage sums narrow the board to one exact solution. Everyone is working on the same puzzle.
One verified solution changes the whole world.
The first accepted solution becomes Discoverer. Everyone immediately enters the same 30-second Contributor window.
The solved board becomes part of the Chain.
Six values survive into the next puzzle. Your wins, solves and Chain streak become part of your profile and the monthly race.
Not another disposable daily puzzle.
Your progress lives across the Chain: monthly competition, consecutive-round streaks, permanent puzzle history and moments worth sharing.
How long can you stay with the world?
Solve consecutive World Puzzles to grow your Chain streak. Your current and best streak live on your player profile.
Start your streak →Competition gets better with someone you know.
Inside your profile, one tap creates a spoiler-free invite to the same live world. Race a friend without splitting the puzzle.
Join before inviting →Every completed puzzle leaves evidence.
Boards, Discoverers, solve counts, carry history and Chain proof remain in the public Puzzle Archive.
Explore the archive →Real puzzles. Real Discoverers.
Each archived board is the actual puzzle the live world solved—not a marketing sample or a private random level.
1 verified solver · discovered by EIJO
1 verified solver · discovered by EIJO
1 verified solver · discovered by EIJO
1 verified solver · discovered by BUBA
1 verified solver · discovered by EIJO
1 verified solver · discovered by ARNATUILE
Understand the rules. Then race the world.
Short, focused guides for cage arithmetic, Latin-square logic and the mechanics that make AllSolveOne different from Sudoku and Killer Sudoku.
How to play AllSolveOne
The three puzzle rules, Discoverer race, Contributor window and transition.
Cage-sum strategy
Use combinations, extreme totals and row/column cross-checks to make deductions.
Coming from Killer Sudoku?
See what feels familiar, what changes and why AllSolveOne is its own live 6×6 format.