Streak Challenge
Five Boards. One Weekly Run.
A fixed five-board sequence, one continuous timer, and one best result per week when the leaderboard is live.
One official weekly result per name is kept on the board. If the backend leaderboard is unavailable, the page falls back to browser-only saving for this device.
What the Streak Challenge Is
This mode turns Shikaku into one connected run. You do not submit five separate puzzle times. Instead, you keep one total clock alive while moving through the full weekly set.
How the Weekly Run Works
The board order is shared by everyone on the same natural week in Asia/Shanghai time. That makes weekly leaderboard comparisons more meaningful because every player is solving the same sequence.
Leaderboard Rules
Each name keeps only one active streak result per week, and the better time wins. If the backend is still being configured, the page remains playable and stores a fallback result in your browser instead.