Enlyzr
The idea
Every puzzle gives you one real equation and asks you to reach another. You get there by making moves, and the game only ever offers moves that are genuinely valid, so you cannot write something false.
The board
Tap any highlighted part of the equation to see what can be done with it. Not every offered move leads anywhere: some are perfectly valid and simply go the wrong way. Under each puzzle you see the number of moves of its shortest route, and every puzzle opens with a short story from the real world.
The seven kinds of move
- Get a quantity by itself: rearrange the equation so one quantity stands alone. Pure algebra, no new physics enters.
- Replace a quantity using another law: this is where new physics comes in, and the move always names the law it used.
- Name a part as a law you know: spot that part of what you have written is itself a known law, and name it.
- Rewrite with an identity: an algebraic identity, such as multiplying out a bracket, pulling out a common factor or splitting a logarithm.
- Multiply or divide both sides: by the same thing on each side.
- Add a rate up over time: add a rate up over an interval. This is how kinetic energy falls out of Newton's second law.
- Use a condition the puzzle sets: a stipulation the puzzle makes about its own scenario, for example that at the half-life half the nuclei are left. It is not a law: true here and false elsewhere.
Assumptions
Some moves are only valid under a condition, for example that a divisor is not zero or that a quantity is not negative. Rather than assume it quietly, the game asks you to accept it, and then keeps it written on your working. The assumptions you accepted are part of the answer.
Hints and stars
Three stars for reaching the goal in the fewest moves with no hints. Two stars if you take a hint or wander a little: within two moves of the shortest route. Otherwise one star. Hints are always available and always cost the third star. Undoing never costs anything, because exploring is the point. When the written hints run out, the game works out a next move itself.
What opens when
The puzzle list opens with the Getting started puzzles. Beginner puzzles need 3 stars, Intermediate 12 and Advanced 30.
Dimensions
A line under each equation says what both sides measure, written in the seven base dimensions. Every move keeps it, so the line reads the same all the way down a derivation. Tap it to see what the letters stand for. You can hide it in Settings.
Laws and symbols
The help holds every law in the game, sorted into areas and with a search. Tap an area to see what it contains. A law's card says what it means and what its symbols stand for. Symbols and laws on the board can be opened in the same way.
Your derivation
When a puzzle is solved, the whole working is written out: where you started, every move with the law behind it, and what you assumed. The best solution of each puzzle is saved. Use Share or Copy to take it out as plain text.
The walkthrough
On first start a walkthrough of seven steps leads you through a real puzzle. You can run it again from the help; go back to the list to start it.
Settings
In Settings you choose the language (English or Czech, or follow the phone), the theme (light, dark or follow the phone), the colours, whether the story is shown before every puzzle, once for each puzzle or never, whether the dimension line is shown, and whether a science fact for the day is shown when you open the game.