Puzzle tools
and guides.
Solvers for when you are stuck, a trainer for when you want practice, and guides that explain the method so you need the solvers less.
- Number sequence solver
Paste a sequence and get the next terms with the rule explained in words. Handles arithmetic, geometric, quadratic, Fibonacci, squares, primes, alternating and interleaved patterns.
- Mental math trainer
Sixty seconds of addition, subtraction, multiplication or mixed questions at three difficulty levels. Free, no signup, runs in your browser.
- Anagram solver
Enter up to 15 letters and find every English word they make, longest first. Wildcards supported.
- Word unscrambler
Type scrambled letters, add up to two blanks, and get all the words you can make, grouped by length. Filter by starting or ending letters.
- Brain age test
Six quick maths, word and pattern questions against the clock. You get a score and a time, not a made-up brain age. Free, no signup.
- How to play sudoku
The three rules, the cross-hatching scan that solves easy grids, pencil marks, and the two intermediate techniques that finish almost everything else.
- How to solve anagrams
Look for common endings, pair the vowels, rotate the letters. Practical methods for unscrambling words fast, with examples.
- How to solve number sequences
Differences, ratios, alternating patterns and interleaved sequences. The order to check them in, with worked examples from aptitude tests.
- How to get better at mental math
Left-to-right addition, rounding and adjusting, and the multiplication shortcuts that matter. A practice plan measured in minutes.