Game rules and guides
striduel is a collection of short thinking games. Five of them are logic puzzles solved by deduction and never by guessing; alongside them are games that ask something different - a board game against the computer or another person, dexterity with angles, and a spatial puzzle with turned models. New tasks every day, free in the browser and playable without an account; nothing is stored until you say so.
There is a page here for most of them, with the rules, the techniques and one real example explained step by step - Perspective is new and has none yet. The examples on the four puzzle pages that exist are not invented: they are tasks from the same generator that builds the daily puzzles, solved with the same rules, and they use the same technique names that appear above a hint you buy in the game. Ringbreak and billiards have neither a generator nor a solver; their positions were picked, but they run through the same engine you play against - for billiards that is the physics that settles every shot in the game. In Mirrorturn the model is the same one as in the game; the rotations are calculated, and what is written under each picture comes from where the balls actually are.
- Paritu Learn how to solve Paritu, a binary puzzle with zeros and ones. The guide explains the rules and shows how to work out missing numbers.
- Minesweeper rules and solving techniques Learn to identify safe cells and mines. This guide explains the Minesweeper rules and uses a worked example to show how to solve without guessing.
- Code deduction Which colours belong in which positions? Learn to read the black and white markers and use the clues to work out the colour code.
- Pipsum Pipsum uses Kakuro-style rules with values from 1 to 6. Learn to break down sums and combine clues where rows and columns cross.
- Ringbreak Learn the rules of Ringbreak, based on Copenhagen Hnefatafl. The guide explains both sides’ goals and uses example positions to show how to play.
- Puzzle Golf Remove numbers from a minefield while keeping it solvable without guessing. The Puzzle Golf guide explains the rules and how to choose clues to remove.
- Billiards Learn the pool game’s controls and plan your shots. The guide explains angles, bank shots and how to clear the table.
- Mirrorturn Are the two models identical or mirror images? The Mirrorturn guide explains the controls and walks through an example comparison.
- Level editor Build your own Resonance Cave levels. Learn how to use the editor, test and back up your cave, and submit it for others to play.
Where these puzzles turn up
Each kind can be played on its own, but most modes mix them. The Daily Sprint sets nine tasks of one tier against the clock, with a leaderboard for the day. Endless gives you three minutes and gets harder for as long as you keep solving. Deduction Rush does not ask for the solution but for the one cell that follows by force. And in a duel two people get the same tasks and 48 hours - a logic duel nobody has to be online for.
Practise it yourself
In practice mode you can play each kind of puzzle on its own, as often as you like and on the tier you choose. None of it counts towards a leaderboard - it is the place to try things out.