Logic Problems:

Kitten Litter

Grid-based Logic

Cindy’s cat, Precious, had a litter of seven kittens last month. Cindy’s family decided that they would keep just two of the kittens and so reluctantly they found homes for the other five. By happy coincidence…

BRYLine:

Intermediate 1

Logic: Shapes & Colors

Fill out all the cells in the line with the nine colored shapes, one shape per cell, in accordance with the clues

Geomatrix:

Expert 1

Geometry & Deduction

Discover which one of the four dots surrounding a given letter is in fact the real one so that when all dots are assigned, all the clues are satisfied

Cut-Outs:

The Rose of the Winds Puzzle

DIY, Hands-on

Cut out four diamonds, fold them along the dotted lines to get four V-shaped pieces. Now, interweave these four pieces to get...

Matchsticks:

Square & "E"

Segment-based geometry, hands-on

Ten matchsticks are arranged into the square and the stylized “E” letter...

Puzzle Stories:

The ATM Dilemma

Deduction, Reasoning, Spatial

Frank and Grant just have bet: were there more odd-numbered or even-numbered presidents on US banknotes up to $100. Jeff happened to know all presidents by their numbers...

Kolocells:

Advanced 2

Logic: Colors

An arrangement is composed of an even number of circles. Paint each circle in one of the three prime colors in accordance with the clues provided