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?
4th and Up Number
Chameleon Island
Chameleon Island
Help all the chameleons on the island change into the same color.
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.
4th and Up Number
Countdown
Countdown
Be the player to take the last token!
K and Up Logic
Crack the Code
Crack the Code
Crack the secret code in as few guesses as you can!
4th and Up Logic
Cup Stacking
Cup Stacking
Can you find a way to stack every cup?
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?
4th and Up Shape
Gerrymandering
Gerrymandering
Learn how gerrymandering can be used to control elections by practicing gerrymandering yourself!
4th and Up Number
Graceful Gourds
Graceful Gourds
Can you gracefully label these pumpkin patches?
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?
4th and Up Number
Ladybugs
Ladybugs
Help as many ladybugs as possible land on the leaves.
4th and Up Shape
Lots o’ Plots
Lots o’ Plots
Fill your entire garden with plots of carrots.
4th and Up Number
Magic Flowers
Magic Flowers
Can you arrange 5 numbers into a Magic Flower in which every group of three numbers in a line adds up to the same magic number?
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.
4th and Up Number
Prime Cubes
Prime Cubes
Armed with only your understanding of prime numbers, play against your friends to find the best way to fill in our colorful cube.
K and Up Logic
River Crossings
River Crossings
Help your wolf, goat, and cabbage cross the river.
4th and Up Logic
Rook’s Move
Rook’s Move
Race your friends to get the rook to the end of the chessboard. Can you find a way to win every time?
4th and Up Logic
Skyscrapers
Skyscrapers
Help the city planner build up the city with new skyscrapers.
4th and Up Shape
Smileys
Smileys
Smiling is contagious! Can you turn every frown upside down?
4th and Up Logic
Sprigs
Sprigs
Take turns drawing curves to connect dots. Can you be the one to draw the last curve?
4th and Up Logic
Star Battle
Star Battle
Can you place the stars on the grid?
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!