PUZZLES

Math puzzles for all ages and skill levels.

JRMF puzzles are unique compared to other math games you’ll find. We design problems with low-floors so everyone can get started by the simple act of trying something and with high-ceilings that lead to challenging mathematics.

Play them in person with friends, or virtually at home.

K and Up Logic
Apple Picking
Apple Picking
After a long day of picking apples, can you eat the last, juiciest apple?
K and Up Logic
Chocolate Fix
Chocolate Fix
Can you make the perfect chocolate box for your customers?
K and Up Shape
Color Triangles
Color Triangles
Create beautiful, colorful triangular patterns.
K and Up Logic
Crack the Code
Crack the Code
Crack the secret code in as few guesses as you can!
K and Up Logic
Domino Dissection
Domino Dissection
Can you tile the board using each domino exactly once?
K and Up Logic
Frogs and Toads
Frogs and Toads
Can you help the frogs and toads get to the other side of the pond?
K and Up Shape
Hexaflexagons
Hexaflexagons
Learn the mysteries of the simple yet surprising hexaflexagon, and take one home to show your friends!
K and Up Logic
Juice Jumble
Juice Jumble
Order these jumbled juices to make a beautiful rainbow.
K and Up Logic
Jumping Julia
Jumping Julia
Can you jump your way from start to finish?
K and Up Shape
Königsberg
Königsberg
Everything is made up of one, continuous line. Can you figure out what belongs in town?
K and Up Shape
Map Coloring
Map Coloring
Can you color each map so that no two neighboring states are colored the same color?
K and Up Logic
Monster Town
Monster Town
Race your friends to find the patterns in these Halloween-themed SET cards!
K and Up Logic
Panning for Gold
Panning for Gold
Among all the counterfeits there is only one, true gold bar. Can you find it?
K and Up Shape
Pentominoes
Pentominoes
Can you find a way to cover the shapes with pentominoes?
K and Up Logic
Pool Testing
Pool Testing
Learn how doctors help patients using pool testing through this engaging game.
K and Up Logic
River Crossings
River Crossings
Help your wolf, goat, and cabbage cross the river.
K and Up Shape
Tile with Style
Tile with Style
Can you cover the entire square with pattern blocks?
K and Up Shape
Tippy Toads
Tippy Toads
How many toads can you help sunbathe by balancing them on a lilypad?
K and Up Logic
Tower of Hanoi
Tower of Hanoi
Can you solve these puzzles based on an ancient legend, golden disks, and the end of the world?
K and Up Shape
Wolves and Sheep
Wolves and Sheep
Keep your sheep safe from the wolves!