puzzlerzone
What Tridem is
Tridem is a daily spatial logic puzzle in which three pieces move together as a single group. Each day a new layout is published, and the goal is to slide every piece onto its dashed goal square. The movement rule changes by weekday, so the way the group responds to input can differ from one day to the next. Each daily puzzle has one unique optimal solution, and the engine verifies that solution. The game includes a full back-number archive of 728 puzzles, reachable through date navigation, so past layouts can be revisited freely. A daily leaderboard accepts self-reported results, and the interface is in Japanese. Reset, undo, and hint controls are available to support experimentation while solving.
How to play
Use the arrow keys or WASD to slide the three-piece group. Every directional input moves all three pieces together, so the group acts as one unit. The objective is to land every piece on a dashed goal square. Press R to reset the current puzzle, Z to undo the latest move, and H to request a hint. Date navigation lets you browse and replay puzzles from the archive. Because the movement rule changes by weekday, keep in mind that today's puzzle may not follow the same movement logic as yesterday's. The engine verifies one unique optimal solution for each daily puzzle.
Tips
- Treat the three pieces as a single unit: every arrow or WASD input shifts the entire group, so plan moves around the group's shared position.
- Use the hint, undo, and reset controls while practicing to see how a move affects all three pieces together.
- Because the movement rule changes by weekday, a move pattern from one day may not work on another day's layout.
- Since every daily puzzle has a unique optimal solution, a shorter route may exist if your solve feels longer than expected.
Common questions
How does the weekday movement rule change work?
The movement rule changes by weekday, so the three pieces may slide differently from one day to the next. This weekday variation creates a weekly arc across the game. There is no single movement rule used every day, and the archive lets you revisit past days to encounter their weekday-specific behavior.
Can I play puzzles from previous days?
Yes. Date navigation lets you browse past puzzles freely, and the archive contains 728 puzzles that do not repeat within a year. This makes it possible to revisit older layouts and see how different weekday rules affected similar boards.
What does the daily leaderboard measure?
There is a daily leaderboard where players submit their own self-reported results after solving. Because it is self-reported, the leaderboard reflects player-stated outcomes rather than an automatic measurement of performance.