Core Module

Practice hub

Three question types. Generated puzzles with verified unique answers. Detailed explanations for every question.

20 questions · 25 min
Figure Sequences

Pattern matrices with spatial rules — position, rotation, transformation, and count sequences.

Target accuracy
16–17/20
Practice
Start here
20 questions · 25 min
Latin Squares

5×5 grids with unique symbol placement. Eliminate and cross-deduce to fill all cells.

Target accuracy
17–18/20
Practice
20 questions · 25 min
Math Equations

Symbol substitution with mental arithmetic. No calculator, no rough paper.

Target accuracy
14–16/20
Practice