A puzzle game can expand a small, verified collection into many playable boards by applying rotations and reflections. In a developer account about Meowdoku, Focss describes taking 913 stored 6×6 puzzles and generating eight geometric variants from each, for 7,304 derived board configurations. Those are not 7,304 separately authored base puzzles: the multiplication creates variants from the same finite bank.
What does “913 puzzles became 7,304 levels” mean?
Each bank entry contains a 6×6 region map and a stored solution. The developer reports that the bank has 913 entries, and that each entry can be transformed in eight ways: four rotations, each either unchanged or combined with a reflection. The arithmetic is 913 × 8 = 7,304 derived boards.
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This is a count of configurations produced by the method, not an independent audit of the bank or proof that players will perceive every variant as novel. Symmetry can change a board’s orientation or reflection without changing its underlying puzzle structure.
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Store the puzzle and its answer together
The described bank stores a region map alongside the solution. Because the rules require exactly one cat in each row, the solution can be represented compactly as one column index per row. That compact vector is convenient to store, but it is not itself a two-dimensional shape that can be rotated.
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Expand, transform, and encode again
To create a geometric variant, the implementation expands the row-to-column solution into a 2D boolean grid. It transforms that grid together with the region map, then converts the transformed solution back into row-to-column form. Applying the same geometric operation to the puzzle and its solution keeps them aligned.
A rotation or reflection preserves a correct solution when the starting puzzle and transformation are correct. It cannot repair a flawed source entry: if a stored puzzle is invalid, its derived variants inherit that flaw.
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How can rotations and reflections increase puzzle level variety?
The eight operations are the square’s symmetries: four rotations, with or without a reflection. This provides a simple way to produce multiple board arrangements from one prepared puzzle. It does not add new underlying puzzle logic, and the developer’s account does not establish that all variants feel distinct to players.
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The approach shifts effort away from creating every board separately. The developer’s rationale is that generating a puzzle at runtime can put a backtracking solver on the player’s next-level path, while hand-authoring every board does not scale well. Those are the author’s design reasons, not independently measured performance comparisons.
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How does the game choose a level and validate an answer?
Reconstruct a level deterministically
The described selection uses the level number to cycle through the bank and derive a transform value. When the server loads the same bank, the level number is enough to recreate the same board; the client does not need to send a complete board state for the server to identify the puzzle.
Check the claimed solution on the server
The server-side validator checks that cats do not repeat a row, column, or region. The developer says the server uses the same bank and rules to validate a submitted solution. Deterministic reconstruction and validation therefore rely on the server having the matching bank and applying the same rules.
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Make a shared daily challenge
For the daily puzzle, the account says the UTC date string is hashed into an index-and-transform pair. That gives players worldwide the same daily selection without requiring server-side scheduling. This shared result depends on using the same date basis and mapping logic.
What are the storage and loading trade-offs?
Focss reports approximately 67 MB of JSON across 34 files. The bank is split by grid size and variant, fetched on demand, and served with immutable caching; the client cache preloads only the next five levels. These are implementation figures and policies reported by the developer, not independently measured results.
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Precomputing moves puzzle preparation and verification work out of the player’s next-level path, but it means maintaining the bank and distributing its data. Splitting files and fetching as needed limits the need to load the entire collection at once, while immutable caching allows fetched files to be reused. The five-level preload is the reported balance between preparing upcoming play and keeping the client’s immediate cache limited.
When is a precomputed bank a useful design?
This design fits a game whose puzzle rules and level progression can be represented by a prepared bank plus deterministic transformations. Its main benefits are predictable level reconstruction and avoiding on-demand puzzle generation during level selection. Its limits are just as concrete: variation depends on the bank and its allowed transforms, and correctness depends on validating the source entries before their variants are used.
As Focss puts it in the developer article, “The bank stays small, and the player still sees a new board every level.” The quoted line describes the author’s implementation goal; the reported configuration count does not establish player-perceived novelty.
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