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This page gathers all puzzles presented at
Puzzles.COM, which are either created by Peter Grabarchuk or made
after some of his puzzle ideas. |
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Totem Pole 1 |
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by
Peter Grabarchuk |
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The shape consists of 7 blocks. Which is bigger -
the total volume of the red blocks, the total volume of the blue
blocks, or the total volume of the yellow blocks? |
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Triangles in Coins |
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by
Serhiy and
Peter Grabarchuk |
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How many right isosceles triangles of any size
and orientation can you find in the shape? To count, the triangle must
have three coins placed exactly at its respective corners. One
triangle is already shown. |
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Square-Cocoon-Butterfly |
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by
Peter
and
Serhiy Grabarchuk |
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Divide a square into some minimal set of pieces
so that while rearranged they could create two different shapes, one
resembling a cocoon and another - a butterfly. |
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The Sun |
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by
Helen
Homa and
Peter Grabarchuk |
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Rearrange some strange symbols and get an entire
word which clearly indicates SUN. This challenge combines visual and
moving skills with little linguistic experience. |
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Block Twins |
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by
Serhiy and
Peter Grabarchuk |
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Six shapes, each arranged of unit cubes, are
duplicated into a twin-set. Definitely, the twin-set at first glance
doesn't look like the original one, but it still contains the same
shapes. The goal is to discover all six pairs. |
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Lace Loops |
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by
Peter Grabarchuk |
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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? |
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Put-Together Puzzles |
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Turning Digits |
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by
Peter Grabarchuk |
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Make some simple device be turning and try to guess what image it will
produce. It seems your imagination will be required instead of your math
skills. |
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Message Reading |
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by
Peter Grabarchuk |
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Some letters are interwoven inside four transparent cubes. There are
some hints to arrange the letters in a message and your goal, thus, is
just to read it correctly. Can you do that? |
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The Rock Climber Maze |
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by
Peter Grabarchuk and
Helen
Homa |
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Climb up a mountain in a little bit unusual way since all of the
mountain's rocks are colored in one of the four colors and your route to
the top depends on what color sequence you choose. |
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Triangle Unicursals |
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by
Peter Grabarchuk |
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One more unicursal challenge
with stained-glass windows. Which of the six windows can be
drawn in the not-taking-the-pencil-off and
not-going-along-the-same-line-twice manner? |
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Square Skate |
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by
Peter Grabarchuk |
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This little "skate" can be divided into four identical parts which can
form a perfect square. The only task is to find these four parts... |
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Arrow Cutting |
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by
Peter Grabarchuk and
Helen
Homa |
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A simple arrow has to be divided in just three pieces which, when
rearranged, create a whole rectangle. But the pieces have to be different
in their shapes and areas. Sounds easy? |
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Sphere Between Cubes |
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by
Peter Grabarchuk |
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A cube is inscribed in, and a cube is circumscribed outside the same
sphere. What are their relative volumes? Any ideas how to calculate them? |
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Snaps3 |
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by
Peter Grabarchuk |
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Six snapshots of the same thing just taken from different positions. One
of them is wrong. Matching the 2D snapshots with the 3D thing can you
figure out which one it is? |
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Three Bracelets |
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by
Peter Grabarchuk |
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Three bracelets look very much alike. Only two
bracelets are totally identical. Which two of them? Would it be hard
to discover? |
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Areas in the Big Square |
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by
Peter Grabarchuk |
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Overlapped circles form different color areas.
The challenge is by using simple calculations to find two identical
areas. The approach can be easy and clever simultaneously. |
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The Band Cross |
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by
Peter Grabarchuk |
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There are four snakes interwoven in a cross-like
shape. Each one of a different color: black, blue, green and red. The
challenge is to spot the shortest of them. |
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Toy Strip Origami |
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by
Peter Grabarchuk |
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Three colored strips have to be folded into three colored letters. The key
idea is to keep the number of the performed folds as low as possible. Is
it a challenge that would be TOY to you? |
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Cubed Triangles |
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by
Peter Grabarchuk |
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A shape consists of five adjacent squares and two triangles. There are
some variations of the shape provided. The goal is to figure out which of
them can be folded into a cube. A good exercise to train your spatial
reasoning. |
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Color Prism Patterns |
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by
Peter Grabarchuk |
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It is known only two among eight colored patterns can produce two
identically colored prisms when folded. Can you spot them correctly in
this "2D-to-3D" folding-spatial puzzle? |
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Cubed Rectangles |
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by
Peter Grabarchuk |
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Eight possible folding patterns for a unit cube.
But not all of them are correct. Find out which can be successfully
folded into the cube and which cannot. A spatial challenge to train
and enrich your imagination. |
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Eight Checkered L's |
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by
Peter Grabarchuk |
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Checkered capital L-shaped pieces have to create an ordinary 8x8
chessboard. Your goal is just to find their proper positions within it.
Guess it will be easy? |
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Plus 2 Hexagons |
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by
Peter Grabarchuk |
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Four contours of regular hexagons are already available. The goal is quite
simple - rearrange them in some way so that two more regular hexagons
would appear. What's the trick? |
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Square-in-Square |
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by
Peter Grabarchuk |
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When two rectangles are placed side by side one
square is supposed to be created. But here one more square will
appear. The challenge is to select the right rectangles from the set
provided. |
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The Triangular Grid |
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by
Peter Grabarchuk |
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Arrange eight pieces to create a shape with a triangular pattern on it.
Each piece is cut from a hexagon and includes a part of the pattern on it.
The goal is to fit the pieces correctly within the board. |
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Hexa-Snakes |
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by
Serhiy and
Peter Grabarchuk |
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Three color snakes, each of the same length but
of the different shape. Just put them all onto the hexagonal board.
The snakes can be freely rotated and flipped over but not overlapped. |
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Triangle in Addition |
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by
Peter Grabarchuk and
Helen
Homa |
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A rhomb and a square made of eight matchsticks. More just three
matchsticks and create an equilateral triangle in addition to the two
initial shapes. What is the right approach? |
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The Bird |
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by
Peter Grabarchuk |
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Help the bird to be looking in another direction. Just move two matches
and a button to do this. |
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The Match Cross |
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by
Peter Grabarchuk |
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Five identical squares form a cross. Three
matchsticks can be moved so that six identical squares would appear.
The only thing left is to find the spots for the matchsticks to be
moved to. What are they? |
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Coin Exchange |
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by
Peter Grabarchuk |
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Invert a capital L of coins into another L only by sliding of the coin
pairs. Now that you know this simpLe ruLe, it couLdn't be very difficuLt
to sLide the coins up to the soLution... |
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Coin Butterfly |
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by
Peter
Grabarchuk |
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Two equilateral triangles are created with the help of five identical
coins. Slide only two coins so that the equilateral triangles are now both
of different size. |
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Point the Center |
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by
Peter and
Serhiy Grabarchuk |
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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? |
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Last Updated: April 22, 2011 |
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