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Puzzles |
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Puzzles |
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This page features sample puzzles
of different kinds from this and other sections of the
website. To see more puzzles of these types
just follow the links to their respective pages. |
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Matchstick Puzzles
Put-Together Puzzles
Coin Puzzles
Sliding Block Puzzles
Chess Puzzles
Checkered Origami Patterns
Origami Strip Puzzles
Dissection Puzzles
Geometric Puzzles
Puzzle Mix
Puzzle
Favorites
Puzzle Hits
Puzzle Greetings
Projects
Games
Interactive Puzzle Play |
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Featured Puzzles |
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The Five Hearts Puzzle
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by Helen Homa and Peter Grabarchuk |
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How can you mend a broken heart...
That's not only a lovely classic song, but also a core
of a newest tricky slider in which your heart challenge
is to mend not just one but whole five hearts, each in
its own color. Happy and Colorful Valentine's Day!.. |
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play > |
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Coin Tree |
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by Peter Grabarchuk |
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Six coins, three silver and three
gold ones, should swap their places in the minimum of
single moves. There are two different solutions
depending on what you prefer, either leave the Coin Tree
shape standing vertically as in the start position, or
rotate it... |
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Coin Puzzles |
go to puzzle > |
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Hexaframes |
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by Serhiy Grabarchuk, Jr. |
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Four equal regular hexagons are
transparent with a thin outline, and they can form
different patterns when overlapped. The challenge is to
form the maximal number of additional regular hexagons.
What can be your best result?.. |
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UniPuzzle.com |
go to puzzle
> |
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Parted Square |
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by Peter Grabarchuk |
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A subset of three squares should be
chosen from among six holed squares so that they can
form a non-transparent square pile. The challenge is
trickier than it can look at first glance... |
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MathIsFun.com
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go to puzzle > |
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Easy Flat Color Cube |
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by Peter Grabarchuk |
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Eight flat tiles with images of 3D
colored unit cubes can be assembled so that they form a
flat shape looking like a 2x2x2 cube. Two different
challenges are proposed to baffle you with this
seemingly simple assembling puzzle... |
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play > |
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The Tangramion |
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by Serhiy Grabarchuk |
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This is a new assembling puzzle
consisting of seven two-sided tiles which initially form
a perfect square. Using all the seven tiles, you can
solve different challenges both entertaining and
cognitive... |
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go to puzzle > |
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The Tangramboard Plus |
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by Serhiy Grabarchuk |
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The
Tangramboard puzzle extended with an additional
checkered 3x3 Mini-Tangramboard makes quite a tricky
challenge. Its goal sounds simply: "Using all the 11
checkered tiles, assemble one big (5x5) checkered
square..." |
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play > |
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Coin Triangle |
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by Serhiy Grabarchuk |
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Nine coins form a triangle on the
table. The challenge is to change the triangle into
another shape, moving the minimum of the coins. What is
the best result you can reach?... |
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Puzzles.COM |
go to puzzle
> |
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The Factory Block |
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by Serhiy Grabarchuk |
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You have twelve matchsticks. Nine
of them form the Factory Block shape. The goal is
with the three remaining matchsticks to divide the
Factory Block into two parts of the same area... |
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go to puzzle > |
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Eight Knights in the Seven |
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by Serhiy Grabarchuk |
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Eight chess knights, four white and
four black ones, are placed on the 7-like chessboard and
are going to swap their position. Can they do that in
exactly twelve moves, counting a consecutive series of
leaps of a knight as one move?.. |
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go to puzzle > |
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One Magic Square |
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by Serhiy Grabarchuk |
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Using 16 square tiles, assemble a 4x4
grid with a traditional magic squares 3x3 which includes
all the nine digits from 1 to 9. The digits are
stylized, and one of your challenges is to figure out
how they look like... |
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UniPuzzle.com |
go
to puzzle > |
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One More Square |
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by Helen Homa and Peter Grabarchuk |
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How to change four color squares
into five? Not too easy challenge, but doable. Eight
patterned tiles are placed within the 3x3 board so that
four color squares are formed. Slide tiles around to get
them into another position in which five color squares
appear... |
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play > |
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Return to the Future |
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by Serhiy Grabarchuk |
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The three sport balls -- two
complete and one split into two halves -- are depicted
on the surface of six square tiles. The goal is to
rearrange the tiles so that the third ball becomes
complete. Of course, one of the two balls being on the
Start complete will split into two halves; but you can
easy choose which one it will be... |
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play > |
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The 1-2-3 Puzzle |
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by Peter and Serhiy Grabarchuk |
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This sliding block puzzle is one of
the simplest of its kind, and consists of only seven
domino-like tiles with three big digits depicted on them
as shown above. Two challenges are proposed to solve in
which you have to reach two different goals... |
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play > |
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Double-Cube Snakes |
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by Peter Grabarchuk |
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It's a folding challenge with 3D
shapes this time, and you have to determine which of
three snake-like folding shapes can form a 1x1x2 block,
when folded along the lines... |
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go to puzzle
> |
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Wire Pyramid |
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by Peter Grabarchuk |
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A skeleton pyramid contains a
number of parallelepipeds. Our challenge will test your
skill of observation and systematic counting. So your
task is to spot and count within this construction all
those skeleton parallelepipeds... |
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go to puzzle
> |
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NEWS Guide |
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by Serhiy Grabarchuk, Jr. |
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Five triangles can be changed into
arrows each pointing into one of the eight given
directions -- four main and four additional. Your
navigational goal is to aim all the five final arrows so
that there are the equal numbers of all four main
directions... |
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UniPuzzle.com |
go to puzzle
> |
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Arthur Stone's Flexatube |
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by Serhiy Grabarchuk |
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It is a great and unique puzzle
discovered in 1939. Martin Gardner writes that Arthur
Stone discovered the Flexatube somewhat accidentally
working on a flexagon, and was very surprised with this
discovery... |
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go to puzzle > |
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DualDoku |
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by Peter Grabarchuk |
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One more puzzle of the
2nd World Sudoku Championship held in Prague on
March 28 -- April 1, 2007. The big grid consists of two
partially overlapped 9x9 sub-grids. All the rules are as
in the "standard" Sudoku... |
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go to puzzle > |
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Slant Numbers |
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by Serhiy Grabarchuk |
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This is another puzzle of the
2nd World Sudoku Championship held in Prague on
March 28 -- April 1, 2007. It was part of the 2WSC
play-off. Every square cell of a 6x6 square grid is
divided diagonally into two triangle sub-cells (white
and gray)... |
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go to puzzle > |
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Color Islands Sudoku
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by Henry Kwok |
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Three color islands on a "standard"
9x9 grids add to a traditional puzzle new, exploring
dimensions. It looks like you should solve several more
sub-challenges, which in turn are helpful while you
accomplishing the main task... |
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Puzzle Hits |
go to puzzle > |
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5-b |
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The Checkered Origami I-Triangle |
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by Serhiy Grabarchuk |
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This is another triangular version
of the Origami Checkerboard puzzle. Again, it uses an
unusual sheet of paper in the form of a isosceles
triangle colored just on one of its sides. It can be
easy obtained from a standard Origami square... |
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read more > |
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Toy Strip Origami |
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by Peter Grabarchuk |
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Using three Origami strips, each
colored at one side, and white on the other, and
performing just "single-layered, book" folds, get a
three-letter word TOY in the minimal number of single
folds... |
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read more > |
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Two Oval Stools to a Table |
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by Serhiy Grabarchuk |
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This well-known, classic puzzle
with transformation of two oval stools into a circular
table top has long and interesting history. More than
180 years ago, in 1821, John Jackson posed in his book
Rational Amusement for Winter Evenings a puzzle
how to transform a circle into two hollow ovals... |
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read more > |
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Arco-Triangles |
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by Serhiy Grabarchuk |
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If you take three circles and
overlap them as shown in the diagram at right, you can
see that the whole shape is divided into seven
non-overlapping arco-triangles. An arco-triangle is a
shape formed with three arcs which are crossing in three
vertices of the arco-triangle... |
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read more > |
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Sud³oku |
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by Peter Grabarchuk |
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This is a version of a classic
Sudoku developed to play with special cards and cubes.
You have a set of 6x6 challenge cards ranged from
Beginner to Expert which can be placed on a 6x6 board
with 36 cells... |
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go to puzzle > |
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Cast Coaster |
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by Serhiy Grabarchuk |
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This is my first puzzle
manufactured by
Hanayama Toys Co., Ltd. in their famous and unique
Cast Puzzle series. The puzzle consists of only
three light, metal rings linked into a chain. The rings
are to be assembled into a nice pattern which uses
ornamental motif of the simplest, three-line braid
closed into a loop. |
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read more > |
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Games |
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Loyd, Dudeney and... Galactic Takeover |
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by Serhiy Grabarchuk |
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It's amusing to see how things that
were interesting to puzzlers many decades ago look fresh
and attractive today. Of course, they were presented in
a somewhat different manner, but their core is still
appealing to their solvers... |
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read more > |
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Playing with Puzzle Classics |
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by Serhiy Grabarchuk |
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In the December issue, GAMES
Magazine publishes my article, Playing with Puzzle
Classics, see pages 84-89. It's devoted to different old
puzzles with a modern look on them, and contains a lot
of interesting puzzle materials I've never published
before... |
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read more > |
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