Logic Problems:

Hiking in Yellowstone

Grid-based Logic

Five friends visited Yellowstone Park this week on a hiking trip. They were overwhelmed at first by the sheer quantity of blazed trails...

BRYLine:

Beginner 2

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:

Intermediate 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:

Flower and Ring

DIY, Hands-on

Interlace the petals of the flower with the ring so that each of the four directions intersecting in the center of the flower and the ring add up to...

Matchsticks:

Rhombuses Getrid

Segment-based geometry, hands-on

In plane Euclidean geometry, a rhombus is a quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length

Puzzle Stories:

Elevator Exercise

Deduction, Reasoning, Spatial

Larry lives on the 50th floor of a skyscraper. He gets up very early—earlier than anyone else in the building—and, obviously, must reach the ground floor to go to work. Naturally, he uses the elevator, but at the hour he wakes up, the elevator is always on the ground floor...

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