A small, evidence-led library
Mahjong Turtle Guides
Choose the question closest to the board behavior you want to understand. Each route below identifies the evidence it uses and the input available for repeating the check.
Choose by question
Coordinate and blocking diagnosis
Why is this tile blocked or newly free?
- Evidence
- Coordinate-checked cover and side states using the implemented free-tile checks.
- Repeat with
- Turtle position IDs and the seed 20260614 transition after pair 29–143.
Fixed-seed opening comparison
What changes after different legal first moves?
- Evidence
- Free-tile, newly unlocked, and legal-pair counts after three genuine openings.
- Repeat with
- Classic Turtle seed 20260614; reset to the untouched board before each published ID pair.
Dead-end recovery trace
Where can a legal path fail, and where can it branch?
- Evidence
- A tested 34-pair path to zero legal pairs and a verified complete continuation.
- Repeat with
- Seed 20260614, the published tile-ID sequence, then rewind four moves and choose pair 32–61.
Board generation and solvability
How does a generated board receive an initial solution path?
- Evidence
- A code trace of layout slots, the pair pool, seeded assignment, and simulated removals.
- Repeat with
- A supported layout plus numeric seed, checked by the repository's deterministic and layout tests.
Supporting 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.