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:

Expert 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:

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:

The Checkered Snowflake Folds

DIY, Hands-on

Folding the Snowflake just along the lines between its triangle cells, form a perfect, gapless, perfectly checkered (in two colors on one of its sides), flat hexagon of the biggest size

Matchsticks:

Trapezoid Getrid

Segment-based geometry, hands-on

How many trapezoids of all sizes can you count? What is the MINIMUM number of matchsticks which has to be removed from the arrangement in order to…

Puzzle Stories:

Postage Stamp Dilemma

Deduction, Reasoning, Spatial

Today Benny’s post office got a new shipment of stamps with a new design: they’re printed in perforated 4×4 sheets instead of 3×3 sheets...

Kolocells:

Intermediate 3

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