Puzzle Packs
Practice with purpose
Choose the difficulty or technique you want to practice, then play it here — no extra pages between the choice and the grid.
By difficulty
Select to load · then playBy technique
Shorter sets, one pattern eachPuzzle Challenge
Reader-submitted, creditedEvery completed puzzle receives a Scorecard. Eligible solves can be kept as a private, replayable Su-Pu. Pack progress does not affect Global Ranking.
Explore the complete collection
Want to choose your own puzzle instead of a pack pick? Browse every puzzle by difficulty in the free Orbace Sudoku app.
Where packs fit
Each part of Orbace does one job. None of them is a step you must pass through before practicing.
Compete
Official ranked play. Ranking Points come only from eligible finalized official competition results.
See Compete →Questions
What is a Puzzle Pack?
A fixed set of validated puzzles that share one difficulty, so a session practices the same kind of reasoning repeatedly. Techniques below draw from the same puzzles, filtered to the ones that require that pattern.
Which pack should I choose?
Choose the hardest difficulty you can finish without guessing. If you finish comfortably, move up one; if you stall on scanning, move down one.
Do packs affect my ranking?
No. Pack progress and Puzzle Score are personal practice. They do not affect Global Ranking. Ranking Points come only from eligible finalized official competition results — see Compete or Rules & Scoring.
Is progress saved?
Yes, for a signed-in identity. Completed and clean-solve counts per pack carry across devices; anonymous play is tracked on this device only.