Free logic puzzle — instant play, no signup, no download
Balance Puzzle shows a set of scales with known weights on one side and a mystery weight on the other, and asks you to work out the unknown. It is visual algebra — the same equation-solving you would do with x, presented as something you can see tipping. That makes it a good bridge puzzle for people who find symbolic algebra uncomfortable but have no trouble reasoning about a seesaw.
Read the scale — the side that hangs lower is heavier.
Use the known weights shown to work out what the mystery weight must be.
Enter your answer for the unknown weight.
A correct answer loads the next, harder arrangement.
Puzzles add more weights and more steps as you progress.
Deductive reasoning with constraints, and the habit of working backwards from a known total. This is the reasoning pattern behind most word problems, and practising it visually tends to transfer to the symbolic version.
Cancel identical weights on both sides before you calculate anything. It usually halves the problem.
Write the relationship as a sentence — 'two triangles equal one square' — before you reach for numbers.
If a puzzle has two unknowns, look for the scale that contains only one of them. That is always the starting point.
Check your answer by substituting it back into every scale shown, not just the one you solved.
Both. The deduction is logical, the final step is arithmetic. Nothing beyond simple multiplication and division is needed.
Yes — every arrangement is generated so that the constraints force a single value.
It works well from around age nine, and it is one of the gentler introductions to the idea of an unknown.
Start from the simplest scale on screen. There is always one that can be solved on its own.