Interactive Puzzles
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Intriguing puzzles which you can play directly online - no need to make any additional preparations.

Coin Puzzles
 Coins & Triangles by Kobon Fujimura Remove some coins from a big coin triangle containing ten coins and a lot of smaller equilateral triangles so that no equilateral coin triangles remain. Play  |  Download  |  Coin Puzzles
 Coin Triangle by Serhiy Grabarchuk Change the triangle into a square by moving the minimum of the coins. How many coins will you need to move to do this? Play  |  Download  |  Coin Puzzles
Matchstick Puzzles
 Christmas Tree by Serhiy Grabarchuk Jr. It can be a little Christmas puzzle gift to entertain you for a few minutes at least - only three triangles hidden in a Christmas Tree and the extra one that has to be found. Play  |  Download  |  Matchstick Puzzles
 The Bat by Serhiy Grabarchuk Jr.  by Peter Grabarchuk Make the match bat flying away in another direction. What do you think, how many moves will you need to do this? Just three right moves... Play  |  Download  |  Matchstick Puzzles
 Out of Glass after Martin Gardner Get the cherry outside the glass moving exactly two matches. Great classic! Play  |  Download  |  Matchstick Puzzles
 Turn the Fish by Kobon Fujimura How can you move 3 matches to make the fish swim in the opposite direction? Play  |  Download  |  Matchstick Puzzles
 Puzzling Time by Serhiy Grabarchuk Jr. Move two matches to get the exact time half past four. Play  |  Download  |  Matchstick Puzzles
Put-Together Puzzles
 Square Table Top by Henry E. Dudeney Seven pieces are already fitted into a square table top. One is left, and, unfortunately, the cabinetmaker doesn't know how to be with it. Can you help him to solve this fitting challenge? Play  |  Download  |  Put-Together Puzzles
 Silhouettes If several silhouettes are superimposed in a pile in some certain way a silhouette of a rabbit can appear. Moreover two different rabbit's silhouettes can be obtained. Can you find them both? Play  |  Download  |  Put-Together Puzzles
 Four into One The four identical triangles can be arranged into the same triangle, only bigger. Can you perform the same thing with another set of four identical shapes? Play  |  Download  |  Put-Together Puzzles
 Lace Loops by Peter Grabarchuk Place six color loops onto a 4x5 grid. No loop should touch any other one; no loop should be left outside the grid’s borders. Is the grid big enough to hold all the loops within strictly following the rules? Play  |  Download  |  Put-Together Puzzles
 The 8 Angles by Sean Egan Eight pairs of identical moons are orbiting a green planet. The goal is to connect them all to the planet with a link per moon. It's a harder sequel to The 4 Angles puzzle by the same author. Play  |  Download  |  Put-Together Puzzles
 The 4 Angles by Sean Egan There is one Sun and eight planets in this puzzle. And your goal is to supply each planet with its portion of light - exactly one ray per planet. Enjoy and relax! Play  |  Download  |  Put-Together Puzzles
Tangrams
 The Egyptian Puzzle Five squares are cut in one way to create five identical pairs of pieces. The resulting set of ten pieces is very appropriate to try yourself in completing some nice shapes from it... Play  |  Download  |  Tangrams
 Cross vs. Square The four identical pieces can be simultaneously used to form a Greek cross and a perfect square. Can you discover both of these shapes? Any ideas how on it? Play  |  Download  |  Tangrams
Puzzles with Letters
 The M Puzzle Make a symmetric letter M using four pieces. How many strange shapes will you see before you get your perfect letter M? Play  |  Download  |  Puzzles with Letters
Matching Cards
 Tessellated Tiles by Henry E. Dudeney Twenty tessellated square tiles each one consisting of four color cells. Your goal is just to select 16 of them and arrange the square in which every cell matches color to color. Play  |  Download  |  Matching Cards
 Squares 4 Four by Peter Grabarchuk A dozen of dots are scattered among the four pieces and your goal is to drive these dots into the corners of the four squares at once. Play  |  Download  |  Matching Cards
 Saddle the Horses Arrange the three cards so that each rider is in his correct riding position on top of each horse. Play  |  Download  |  Matching Cards
Checkerboard Puzzles
 TLs by Sam Loyd Can you pack a checkered T-shape and seven checkered L-shapes into a regular 8x8 checkerboard so that to completely fill it in a way that dark and light cells are properly alternating? Play  |  Download  |  Checkerboard Puzzles
 Hard 14 Do you think it is hard enough to assemble 14 different pieces into a regular 8x8 checkerboard? Isn't there any connection between the name and the puzzle itself? Play  |  Download  |  Checkerboard Puzzles
 Broken Checkerboard Restore a simple 5x5 checkerboard from the six pieces scattered around. Don't forget to alternate the colors of the cells. Are there many ways to make the board? Play  |  Download  |  Checkerboard Puzzles
Visual Puzzles
 The Lost Star by Sam Loyd Several triangles and quadrangles joined together create an intricate pattern where some perfect star is hidden. Discover that lost one. Play  |  Download  |  Visual Puzzles
Puzzles with Numbers
 Magic Triangle 3X The six numbers from 1 to 6 have to be placed along the sides of a triangle so that to create some magic sum along each of its sides. What magic sums can be there? Play  |  Download  |  Puzzles with Numbers
 The 26 Puzzle Re_Solution after Professor Louis Hoffman A sequel to The "Twenty-Six" Puzzle. Numbers 1 through 12 and the magic sum of 26 remain, but the seven areas have changed. Will it be harder than the prequel? Play  |  Download  |  Puzzles with Numbers
 The Number Grid Puzzle Don't let the adjacent digits be... adjacent. The eight digits are known, a simple grid is drawn and the systematic approach is recommended. Play  |  Download  |  Puzzles with Numbers
Puzzles from Championships
 Jigsaw Cells 2 by László G. Nagy Put a set of sixteen jigsaw-like pieces into a jigsaw-like board. The places for many pieces can be discovered based on a logical reasoning. You just have to make the right conclusions. A sequel puzzle to Jigsaw Cells. Play  |  Download  |  Puzzles from Championships
 Star Battle by Zoltán Horváth Light a couple of stars in each column, each row and each region in the blue sky. No star can touch each other, even diagonally. No guessing while solving, only logical reasoning is required. Thus, how long it will take you to light all the stars? By Zoltán Horváth. Play  |  Download  |  Puzzles from Championships
 SMS Codes by László Mérő by László G. Nagy Do you like to type SMS messages with your cell phone? Whatever your answer is, we'd like to offer you more interesting challenge - to read them. Where is the trick? The reading isn't that simple - it's actually code-breaking. Play  |  Download  |  Puzzles from Championships
 Finnish Snake by László G. Nagy A sea serpent lies hidden under the surface of the water with only its head, tail and a few other parts visible. Should it be hard to reveal its entire body from head through tail, knowing it doesn't touch itself anywhere? Play  |  Download  |  Puzzles from Championships
 Jigsaw Cells by László G. Nagy Put a set of nine jigsaw-like pieces into a special grid. A distinctive feature of the challenge is that there is a definite logical place and order for each piece to be located within the grid. The goal is only to discover it! Play  |  Download  |  Puzzles from Championships
Mazes
 The Knossos Labyrinth by Serhiy Grabarchuk You are an architect and you have to restore the labyrinth after the fragments of an old plan. What would be your starting point through these ancient walls? Play  |  Download  |  Mazes
Word Puzzles
 Doublets by Lewis Carroll From the Ape to the Man through the series of words - it's the game of Doublets. Will it be easy to reveal all the words in it even if you know their number? Play  |  Download  |  Word Puzzles
Puzzles with Weighings
 Heavy Weight after Martin Gardner Two weighings are required to identify the heavier thing among the four identical ones. Two weighings are required for the nine things as well. But how on it in the latter case?.. Play  |  Download  |  Puzzles with Weighings
Other Non-Manipulative Puzzles
 3-vs-2-feat-1 Color the points of a "web" into two colors - red and blue - in such a way that do not allow any sequence of three points of the same color be found in a single line. Play  |  Download  |  Other Non-Manipulative Puzzles
Illusions
 Coin Distances after Martin Gardner Two distances are associated with three coins. Could you find a certain position of the coins so that the distances are equal? Is there any way how the moving coins can distract you from the mission? Play  |  Download  |  Illusions
 Point the Center by Peter and Serhiy Grabarchuk Only one of the nine arrows points exactly into the center of the circle, all of the remaining are only close to it. Can you guess without any additional measures which one is it? Play  |  Download  |  Illusions
Tricks
 Where Is the 5? by Serhiy Grabarchuk Four pieces form a square with the magic square on it. Just flip over the pieces and try to make a square once again. Can you say why does a part of it disappear? Play  |  Download  |  Tricks
 Count Trick after Martin Gardner Believe it or not, they say everyone who calculates not too bad makes... a mistake while sum up these eight numbers. Make sure about it! Play  |  Download  |  Tricks
 Rainbow Necklace Trick by Serhiy Grabarchuk Show to your spectators which bead was chosen by one of them from any of seven necklaces you demonstrate. Play  |  Download  |  Tricks
Toys
 Cover the Red Circle Cover a big circle entirely with the five smaller circles. But keep in mind: when a smaller circle is placed on the big one you aren't allowed to move it anymore. Play  |  Download  |  Toys
 Doggy Mosaic by Serhiy Grabarchuk, Jr. Find your own way how to complete some mosaic with the figures of these smart dogs. Can you explain how it can be? Play  |  Download  |  Toys

 Last Updated: June 1, 2016 top
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