3 WEEKLY INTERACTIVE PUZZLES
MATCHSTICK PUZZLES
- 1 Triangle to 3
- 100M
- 2 Rectangles to 11 Squares
- 2 Squares to 3
- 2 Trapeziums to 3 Triangles
- 2 Triangles to 3
- 2 Triangles to 4
- 3 Squares to 2
- 3 to 6
- 3 Triangles to 2
- 3 Triangles to 5
- 4 Equal Triangles to 2 Equal Ones
- 4 Equilateral Triangles to 3
- 4 Triangles from 3
- 5 Squares from 3
- 5 Squares to 3
- 5 Squares to 4
- 5 Squares to 6
- 5 Squares to 9
- 6 Squares to 7
- 6 Triangles from 5 Diamonds
- 8-Cell Grid to 7 Squares
- A Couple of Wine Glasses
- A Hundred to Ten
- A Jar
- A Pile of 8 Triangles
- Big Spiral
- Box to Cabinet
- Break the Bigger Arrow
- Broken Triangle
- Christmas Tree
- Christmas Tree to 5 Triangles
- Christmas Tree: Right Angles
- Coffee Table and the Chair
- Cross on the Church to 3 squares
- Cross to Squares
- Cup and Saucer
- Different Triangles
- Divide the Shape
- Fence to the Cross
- Five-Pointed Stars
- Flip the Chair
- FOOT
- Get 3 Equal Shapes
- GIFT
- Grid & Squares
- Halving the Egyptian Triangle
- Hat to Two Squares
- Heart into 4 Triangles
- Hexagram to 6 Diamonds
- House to 5 Squares
- Key to Squares
- L-Shape to 4 Squares
- Lamp to 5 Triangles
- Meander to Squares
- More Triangles-2
- Move 1 to get 100
- Move 1, Get 2
- Move 2, Get 3 Triangles
- Penta to Tetra
- Puzzling Time
- Reversing the House
- Roman Numeral 7 to 1
- RUN
- Shifted Squares
- Six Squares
- Spiral to Squares
- Square & E
- Square & Triangle to 3 Triangles
- Squares' Overlap
- Stacked Triangles
- The Arrow
- The Arrow-2
- The Bat Upside-Down
- The Cross
- The Droplet
- The Envelope
- The Foxy Box
- The Giraffe
- The Horse
- The House
- The Iron
- The L
- The Medal
- The Pig Puzzle
- The Right Triangles
- The Sand Timer
- The Snail
- The Tent
- The Uncompleted Square
- The Upside Down CAT
- The Vanishing Cube
- Three o'Clock
- Three Regions
- Tic-Tac-Toe to Squares
- Tree to Fish
- Triangle to Hexagon
- Triangular Grid to Triangles
- Triangular ZigZag
- Tulip
- Turn the Fish
- Twin Cubes: View 1
- Twin Cubes: View 2
- Two Antennas to 14 Squares
- Two Bricks
- Two from Three
- Two Glasses: Empty & Full
- Two Hills
- Two Matching Areas
- Two More Triangles
- Two Rectangles
- Two Regions
- Two Triangles
- Windmill to 8 Triangles
- Wine Glasses to a House
- Wine Glasses to a House: V2
PUZZLE CLASSICS
- 1 to 8 into the Vertices of a Cube
- 1, 2, 3, 4, 5, 6, and 7 to 100
- 10 Dots: Equilateral Triangles
- 12 Dots: How Many Squares?
- 20 Dots: How Many Squares?
- 300 to 400
- 8 + 8 = 4
- 9 Dots: How Many Squares?
- 9 Minutes with Two Hourglasses
- 9 Weights
- A Basket of Eggs
- A Beanstalk Conundrum
- A Birthday Riddle
- A Bottle and a Cork
- A Bottle's Volume
- A Broken Clock Face
- A Chessboard and Grains of Rice
- A Chessboard Challenge
- A Child's Age
- A Cone, A Sphere, A Cylinder
- A Cube Through Cube
- A Cyclist
- A Five-Digit Number
- A Flock of Ducks
- A Herd of Cows
- A Hexagon From a Cube
- A Hundred Grapes
- A Man and his Wife - How old?
- A Pencil Challenge
- A Swarm of Bees
- A Three-Digit Number
- A Unique 10-Digit Number
- A Watch Face
- A Weather Forecast
- AB + 20 percent = BA
- Adding the X
- All... But Two
- Apple Pickers
- Apples in a Box
- Area of the Shaded Part
- Around the World
- Arrows to the Word
- Average Speed
- Between 2 and 3
- Birthday Candles
- Bookworm
- Boston - New York Trains
- Boxes & Balls
- Bread's Weight
- Broken Digital Clock
- Brothers and Sisters, I Have None
- Buddhist Monk Puzzle
- Calculate the Weight
- Chicken, Cat, Goat: Fractions
- Circle Relationship
- Circles and Hexagons
- Cities, Forests, Water...
- Complete the Square
- Congruent Parts: L-Shape
- Congruent Parts: Sphynx
- Congruent Parts: Trapezium
- Counting Triangles
- Crazy Cut
- Crossing Hour and Minute Hands
- Crossing Out the 9 Dots
- Cubed Calendar
- Cutting the Shape: Getting the Square
- Digging the Holes
- Digits in the 1-100 range
- Dissecting a Horseshoe
- Doctor’s Son
- Drawing Balls
- Eight Cards
- Eight Queens Puzzle
- Farmer & Apples
- Final Parts from Lead Billets
- Finding the Center of a Circle
- Five 1s to One Hundred
- Five 2s to 28
- Five 3s to 37
- Five 4s to make 55
- Four 9s to make 20
- From 1 to 7 in the Triangle
- From 1 to 7 in two Circles
- Full of Keys
- Get 99
- Grandpa and Lollypops
- GTNTL...
- Handshakes at a Meeting
- Hexagon In-Out
- Hotel Guests and Extra $1
- Hourglasses: 5-min Egg
- Hourglasses: Boiling an Egg
- How Many Brothers and Sisters?
- How Many Brothers and Sisters? Part 2
- How Many Pentagons?
- How Many Regular Hexagons?
- How Many Squares? Part 1
- How Many Squares? Part 2
- How Many Triangles? Part 1
- How Many Triangles? Part 2
- How Many Triangles? Part 3
- How Many Triangles? Part 4
- How Old am I?
- Interesting Fractions
- Into the Woods
- Is There Such A Number?
- Jigsaw Clusters
- Magic Circle
- Magic Square
- Magic Triangle-17
- Magic Triangle-20
- Meeting the Trains
- Minute, Moment, Thousand Years
- Missionaries & Cannibals
- Move One Digit - Get It Right
- Name the Number
- Network of Twos
- New Year's Oranges
- Not a Nickel
- O, T, T,...
- Overlapping Napkins
- Polygon Areas
- Puzzling Scales. Part 1
- Repairing a Chain
- Running Competition
- Score 100
- Send More Money
- Send More Money + Gold
- Seven Pets
- Shaded Area: Leaf in a Square
- Shaded Area: Star in the Square
- Shortest Catch
- Six Glasses Problem
- Snap Crackle and…?
- Soccer Players
- Socks in a Box
- Sphere & Cylinder: Surface Areas
- Square 5x5 into 4x4 and 3x3 Squares
- Squares from the Pegs
- Squares-in-Squares - Unicursal
- Star Strips
- Taking More, Growing More
- Ten Bags of Coins
- Tetra Volume
- The 1st Riddle of the Sphinx
- The 2nd Riddle of the Sphinx
- The 3 Croutons’ Challenge
- The 3-gal and the 5-gal Bottle Puzzle
- The 6 Glasses Problem
- The Air Parade
- The Dice’ Stack
- The Geese Flock
- The Hindu Squares
- The Missing Symbol
- The Missing Symbol 2
- The Price of a Book
- The Puzzled Driver
- The Sequence
- The Sleeping Passenger
- The Snail Challenge
- The Triangular Cat
- The Volume of Which Cylinder is Bigger?
- The Wolf, Goat and Cabbage Challenge
- Three Neighbors
- Three Peasants, Eight Naan Breads
- Three Squares in One Line
- Trilateral Walk
- Two Fathers, Two Sons
- Two Ropes
- Two Trains
- Upside-Down Year
- Water Lilies
- Water Pouring Puzzle - 8oz, 5 oz, 3oz
- What is It?
- What is the Profit?
- What's Before Me?
- Which Statement is True?
- X, Y, Z - Add & Multiply
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2D Geometry: Counting shapes
Squares-in-Squares - Unicursal
Is it possible to draw this shape without: a) taking your pencil off the pa
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Weighings & Measurements
The 3-gal and the 5-gal Bottle Puzzle
Suppose you have an unmarked 3-gallon and an unmarked 5-gallon bottle that
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2D Geometry: Counting shapes
The Triangular Cat
How many different triangles can you spot in the picture of this cat?
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Logical Reasoning
Which Statement is True?
Which of the three statements is true?
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Logical Reasoning
What is the Profit?
A dealer bought a painting for $70, sold it for $80, bought it back for $90
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2D Geometry: Counting shapes
NEWApr 27
20 Dots: How Many Squares?
How many different squares are indicated by four dots that mark their corne
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Knights 3:3
Cells20
Moves10
Arctic Knights
ARCTIC KNIGHTS chess puzzle with horse figures. The game literally immerses
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Knights 3:3
Cells16
Moves7
NEWDec 19
Knight’s Maneuvers
Suppose you've heard the expression Knight's Move. Precisely in the origina
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Knights 4:4
Cells16
Moves16
Knights in the Castle
KNIGHTS IN THE CASTLE will help encourage those who do not know and do not
COIN PUZZLES
- A Coin Necklace
- Always Three
- Anchor Upside Down
- Arrow Down
- Arrow Right
- C-Dot
- Coin Cup
- Coins & Triangles
- Cup to Bowl
- Cut off the Corners
- Dollar to Euro
- Eight to G
- Euro to Dollar
- Expand the Bracelet
- Flip Angle
- Four Coins to Arch
- Fourth of July
- Glass to Cup
- Growing the Tree
- House Downsizing
- In Puzzleland
- Jar Upside Down
- L-Tetromino Flip
- Mirror the Snake
- Mirror the Triangle
- Move the Dot
- Nine to Zero
- Nob’s H-2-O
- Nob’s O-2-H
- Olympic Coins
- Olympic Coins 2
- Open the Envelope
- Pound to Euro
- Presidents’ X-change
- Rectangle to Triangle
- Revealing the Pyramid
- Rhombus to Triangle
- S-Tetromino Flip
- Sailing East
- Sailing West
- Shrink the Square
- The Chevron Challenge
- The Coined Rows
- The Delta Unfold
- The Frame Switch
- The GO Challenge
- The Jumping Coins
- The Six Pennies
- The Vase
- Trapezoid to Arch
- Unboxing the Tree
- Uncovering Octagon
- Unlock the Key-Part 1
- Unlock the Key-Part 2
- Up & Down
- Wi-Fi Switch
- X-Coin Challenge
- Y Upside Down
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A Coin Necklace
Convert the necklace into two triangles (“diamonds”), different in size. Th
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S-Tetromino Flip
Flip the S-Tetromino in the 5 sliding coin moves
NEWFeb 27
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Revealing the Pyramid
Turn the perfect hexagon into the pyramid-like shape.
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The Chevron Challenge
Two chevrons stack on each other, point in the same direction – upwards. Co
LOGIC PROBLEMS
- 4th Grade Project
- A Day at the Zoo
- A Puppy for Mike
- A Special New Year’s Eve
- Ages And New Years
- Airline Flight Blues
- Apple Festival
- Apples All Around
- Arcade Time!
- At the Opera
- Audio Book Commute
- Batter Up
- Bees Buzz
- Bowling Tournament
- Business Deliveries
- Cabins for Rent
- Cars for Lease
- Changing Orders
- Character Adventures
- Chips to Go
- Circus! Circus!
- Cooking Class
- Crazy Cotton Candy
- Dad Goes Shopping
- Dance Routines for Mothers
- Flying to Europe
- Friday Night Bowling
- Friday Night D&D
- Friday Night Karaoke
- Fruit Salad
- Gadgetworks Security
- Garden Plans
- Golf Match
- Hiking in Yellowstone
- Holiday Party
- Holiday Pies
- Ice Sculpture Art Show
- It's Football Season!
- Jury Duty
- Keep on Trucking Diner
- Kitten Litter
- Laundromat Tripping
- Little League Baseball
- Lottery Winners
- Lunch Time!
- Lunchtime Birthdays
- Lunchtime Sushi
- Madame Simone
- Monday Night Homework
- Monopoly Madness
- Morning Bagels
- Mountain Cabin Weekend
- Movie Time
- New Car Day
- New Year Babies
- New Year's Eve Travel
- New Year’s Eve Activities
- New Year’s Eve Dinner Party
- New Year’s Eve Events
- New Year’s Eve Traditions
- New Year’s Resolutions
- One Scoop or Two
- Open Mike Night
- Photo Field Trip
- Planting Season
- Puzzles for Christmas
- Raking Leaves
- Repainting Project
- Research Papers
- Rooms to Decorate
- Route 66
- Rush Hour Listening
- School Bus Stop
- Shift Changes
- Singles Dance Night
- Small Group Sessions
- Snow Storm!
- Spring Garden
- Springtime Gardening
- Stop & Go Convenience
- Story Characters
- Summer Barbecue
- Summer Vacations
- Summers End Camping
- Summertime Fun
- Super Moon Lunar Eclipse
- Sushi Too
- Swimsuit Contest
- TV Night
- Veterinary Blues
- Winter Carnival
- Winter Olympics
- Women’s Golf League
- Worldscapes Convention
- Writing Contest Winners
- Yard Work
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# of groups 4
# of labels 5
Planting Season
Planting season had arrived – winter's snow was almost gone, the first buds were coming out on the trees, and lawns were turning bright green with new grass. Farmer John woke up this morning to birdsong and decided it was time to get the season&
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Cabins for Rent
Five couples decided to camp in the mountains for their last camping trip of the season before winter settled in. In deference to the chillier weather, they rented cabins this time instead of camping out in tents. They were able to rent five cabins i
NEWDec 01
# of groups 4
# of labels 5
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# of groups 4
# of labels 6
Business Deliveries
Greg delivered mail and packages to the six office suites on the second floor of the Millersville Corporate Offices building, located in downtown Millersville. While sounding big and pretentious, the building was actually the old school, refurbished
-
Springtime Gardening
Chelsea and her friends were very excited that spring was finally here! The five were avid gardeners and had been planning their spring planting for months. Last year, they decided to add a vegetable garden as well as their usual flower beds and they
# of groups 4
# of labels 5
-
# of groups 4
# of labels 5
Planting Season
Planting season had arrived – winter's snow was almost gone, the first buds were coming out on the trees, and lawns were turning bright green with new grass. Farmer John woke up this morning to birdsong and decided it was time to get the season&
-
# of groups 4
# of labels 5
NEWDec 01
Cabins for Rent
Five couples decided to camp in the mountains for their last camping trip of the season before winter settled in. In deference to the chillier weather, they rented cabins this time instead of camping out in tents. They were able to rent five cabins i
-
# of groups 4
# of labels 6
Business Deliveries
Greg delivered mail and packages to the six office suites on the second floor of the Millersville Corporate Offices building, located in downtown Millersville. While sounding big and pretentious, the building was actually the old school, refurbished
-
# of groups 4
# of labels 5
Springtime Gardening
Chelsea and her friends were very excited that spring was finally here! The five were avid gardeners and had been planning their spring planting for months. Last year, they decided to add a vegetable garden as well as their usual flower beds and they