Chess players keep their games. Now Sudoku players can too.

Orbace preserves eligible personal solves as Su-Pu (数谱) — move-by-move records of placements, notes, corrections, and turning points. Replay your reasoning, learn from how the grid unfolded, or share the solve with a link.

A calmer way to play. A clearer way to compete.

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No account required for personal play · Free account for saved records and official competition · Timer optional

Real Su-Pu replay

Two records from one solve

See how you finished — and how you arrived.

Every completed Orbace puzzle produces a Scorecard. Eligible personal solves can also be preserved as Su-Pu. Together, they show both the result and the reasoning behind it.

Scorecard · The result

Your result, clearly explained.

The Scorecard summarizes difficulty, time, mistakes, hints, steps, bonuses, and Puzzle Score. Its transparent breakdown shows where the result came from.

谱Foundation #356An example personal solve
1,050Puzzle Score
Orbace Puzzle · 正谱Clean · 净谱Foundation · 入门
08:28Time
0Mistakes
0Hints
43Steps
Base score1,000
Clean solve bonus+50
Total1,050
Su-Pu · The journey

Your reasoning, preserved.

Su-Pu records the sequence of an eligible personal solve. Replay the moment the grid opened, examine a correction, or compare one logical route with another.

The pointing pair that opened the grid

Move-by-move replay · Hard · Clean

18Candidate 7 becomes restricted to one row.
19The pointing pair removes a candidate.
20A naked single appears.
21The next box begins to resolve.
Browse Public Su-Pu Replays

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Choose your experience

Play for the moment. Compete when you are ready.

Personal play and official competition remain distinct. You decide when a puzzle should remain a quiet record and when your skill is ready for shared rules and public standing.

Calm personal play

Tea Moment and Puzzle Packs

Play at your own pace, use learning tools, receive a Scorecard, and preserve eligible solves as Su-Pu.

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Official competition

Daily, Weekly, and Grand competition

Official competition runs on server-recorded attempts and results, scored under published event rules. Your personal Puzzle Score never affects official Ranking Points — the two stay entirely separate.

Account required for official play. Choose an event first; if you need to sign in, Orbace returns you to that event.
Explore CompeteRules & Scoring

From one solve to lasting progress

One connected Orbace experience.

The Scorecard rewards completion. Su-Pu preserves reasoning. Learning turns reflection into skill, and official competition gives that skill a clear test.

01

Tea Moment

Begin with one quiet daily puzzle and receive a clear result.

Play today →
03

Puzzle Packs

Practice by difficulty, strategy, or the kind of thinking you want.

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04

Su-Pu

Replay how a solve unfolded and reflect on the reasoning before you compete.

Browse Su-Pu →

Orbace Global Ranking

Build an official record one result at a time.

Official standing comes from eligible, finalized competition results under Orbace's published rules — not from personal Puzzle Score. Live standings are provisional until each event closes and results are verified.

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Learn from real solves

Every difficult puzzle can become a lesson.

Technique practice packs and articles reconstruct interesting solves and explain the move that changed the grid.

Su-Pu Studies · Lesson 06 · Extreme

Three-Way Fork in Box 9: A Double Contradiction

When three candidates compete for the same digit, a two-layer ibtree resolves the uncertainty—eliminating two false paths to prove the third.

Read the studyVisit Learn

Orbace Technologies LLC

Built for thoughtful play and fair competition.

Orbace Sudoku is developed and published by Orbace Technologies LLC in Troy, Michigan. We build technology around a human principle: it should support the way people want to live without continually demanding more attention.

Read the Orbace story
净谱

净谱 · Clean Solve

Saved to your 藏谱阁 Record Hall.

复盘 View Replay

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