Mind Lab

1. A round has five problems of the kind you chose.
2. Each problem has exactly one correct option.
3. Answers are final. After each answer you see the reasoning.
4. Show solution reveals the answer and counts as a miss.
5. Your score is the number of first answers that were right.

1. Look for the rule. Every problem follows one clear rule. Find it before you look at the options.
2. One answer fits. Exactly one option matches the rule. After answering, read the explanation.

• Click or tap an option to answer
• Tab moves between options, Enter or Space answers
• H for a hint (the rule to look for, never the answer)

Each round has five problems of one kind. Harder levels combine more rules at once. Every problem is checked so that exactly one option fits. Mind Lab is practice for reasoning, not an IQ test.

Is Mind Lab free to play?

Yes. Mind Lab is free in the browser with no account needed, no download and no ads. Your progress is saved on your device.

How do you play Mind Lab?

A round has five problems of the kind you chose. Each problem has exactly one correct option. Answers are final. After each answer you see the reasoning. Show solution reveals the answer and counts as a miss. Your score is the number of first answers that were right.

How do the levels and difficulty work in Mind Lab?

Each round has five problems of one kind. Harder levels combine more rules at once. Every problem is checked so that exactly one option fits. Mind Lab is practice for reasoning, not an IQ test.

Can I play Mind Lab on my phone or tablet?

Yes. Mind Lab works in any modern browser on phones, tablets and computers, with touch, mouse and keyboard controls.

Is there a daily Mind Lab puzzle?

Yes. Every day there is a new daily puzzle, the same for every player, alongside unlimited numbered levels.