sketchbook puzzles · infinite AI challenges

Playing as guest — to save forever

☀ daily doodle

One challenge per day — quiz, math, or memory — 1.5× points

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    Hidden Clues

    What are hidden clues?

    In Hidden Clues and tricky categories, the answer is never spelled out directly.

    How to solve

    1. Read twice — fast, then slow.
    2. Count letter boxes for answer length.
    3. Hints add new sentences — never letters! 3/day, each costs 30% points.

    "Look between the lines — the answer hides in plain sight."

    Every puzzle is AI-generated for your exact difficulty — Easy and Extreme feel totally different.

    Math Mode

    Difficulty rules

    • Easy — only + and
    • Normal+× and ÷ appear
    • Harder+fractions allowed
    • Insane+√ ∫ ∑ π symbols
    • Extreme — toughest AI in each category

    Tips

    Use the math chars panel for symbols your keyboard lacks. Geometry shows sketch drawings and 3D volume problems.

    Calculus is the hardest category — starts at Hard difficulty.

    quiz categories

    AI builds a new clue every round

    math categories

    infinite procedural problems

    choose difficulty

    Memory

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