A small, evidence-led library
Mahjong Turtle Guides
This evidence-led library separates rules, measured board states, and strategic interpretation. Start with the two foundations, then use the three reproducible studies to inspect an opening, a dead-end branch, or one tile's blocker state.
Detailed guides
Decision guide
Mahjong Turtle Strategy Guide
- You will learn
- How to compare upper-layer, edge-release, multi-unlock, and option-preserving moves.
- Original evidence
- Two real Learn Mode captures plus deterministic, mechanics-based board examples.
- Useful for
- Players who know the rules and want to analyze why one legal pair changes access more than another.
Mechanism guide
How Mahjong Turtle Boards Are Generated
- You will learn
- How coordinates, the pair pool, seeded assignment, and a simulated legal removal path create an initial board.
- Original mechanism
- A simplified pipeline derived from
layout.ts,tiles.ts, and the date-to-seed path indaily.ts. - Useful for
- Players and developers who want the precise boundary between initial validity, later choices, replay, and Shuffle.
Reproducible board studies
Each study states its seed or coordinate method, publishes the observed state changes, and limits its conclusions to what the implementation can verify.
Seed 20260614
Three legal Turtle openings
Compare newly free tiles and legal-pair counts after three real first moves from one unchanged board.
Open the opening case study34-pair trace
Dead end and recovery branch
Follow a legal path to zero options, rewind to a genuine choice, and inspect a verified completion.
Open the recovery case studyCoordinate checked
Blocked-tile diagnostics
Distinguish cover, both-side blocking, one-side freedom, and newly unlocked positions.
Open the diagnostics guideSupporting learning destinations
How to Play
Exact availability, matching, controls, and game-ending rules with four static diagrams.
Open the rules referenceTile Guide
All repository-defined faces, classic quantities, smaller-board caveat, and category match behavior.
Open the visual tile referenceStrategy guide
A mechanics-based framework for comparing access, blockers, duplicate faces, and later options.
Open the Turtle strategy guideLayout library
Coordinate-derived previews and geometry notes for all eight playable layouts.
Compare the playable layoutsPlay the classic Turtle board or open today's Daily Challenge.