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Infinite mode lets you play as many Wordgrid puzzles as you like. Each board is generated on demand using Math.random() — no fixed seed — so every board is unique and unshared.
The leaderboard is not available in infinite mode. To compete and compare scores with other players, switch to Daily mode.

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How the board is generated

Unlike daily mode, infinite boards are not seeded from a date. buildBoard() is called without a seeded RNG, so the board builder falls back to Math.random() for all random choices: category shuffling, candidate selection, and word ranking tie-breaking. This means no two infinite boards are alike, and no other player receives the same puzzle.

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Board ID

Each infinite board is assigned a 6-character hex identifier derived from a SHA-256 hash of the board’s answer words. This ID is displayed in the sidebar and uniquely identifies the specific puzzle you are playing. A fresh board always produces a different ID.

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Saving and resuming progress

Your in-progress infinite board is automatically saved to localStorage after every valid guess. Only one infinite board is stored at a time, using the fixed key: 
wordgrid:infinite:current
If you close the tab and return to infinite mode, the game restores your saved board — including all revealed cells, guesses, scores, and the board ID — exactly as you left it.
Only one infinite board can be saved at a time. Rerolling or completing the current board overwrites or removes the saved state. There is no way to return to a previous infinite board.
When you complete an infinite board (all 9 cells revealed), the saved state is deleted automatically. The next time you open infinite mode, a brand new board is generated.

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Reroll

The reroll button is available only in infinite mode. It generates a completely new random board.
1

Click Reroll

Press the reroll button in the sidebar. If you have a board in progress (cells already revealed), a confirmation dialog asks whether you want to continue.
2

Confirm

Confirm the prompt. The current board and all progress are discarded, the saved wordgrid:infinite:current state is deleted, and a new board is generated immediately.
3

New board starts

A freshly shuffled board loads with a new 6-character hex ID. Progress autosave begins again from scratch.

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Changing difficulty

You can change the difficulty at any time from the settings panel. Selecting a new difficulty level in infinite mode will prompt for confirmation, then reset the current board’s progress (guesses, revealed cells, and scores are cleared). The board layout itself remains the same; only the progress is wiped.

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Switching between modes

Switching between daily and infinite modes does not erase either mode’s saved state. Daily progress is stored under wordgrid:daily:YYYY-MM-DD and infinite progress under wordgrid:infinite:current. Toggling back and forth preserves both independently.

Daily mode

A shared daily puzzle with leaderboard submission. Everyone gets the same board.

Infinite mode

Random boards on demand. Reroll any time, no leaderboard.

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