🧩 Peter Grabarchuk 🇺🇦
Colorado Springs, Colorado, United States
559 followers
500+ connections
About
A professional puzzle game / UX designer and product manager with over 20-year experience…
Articles by 🧩 Peter
Activity
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Which cube can be formed with the pattern on the right? Write your answer ✅ in the Comments ✍️
Which cube can be formed with the pattern on the right? Write your answer ✅ in the Comments ✍️
Shared by 🧩 Peter Grabarchuk 🇺🇦
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Maze Cube (by 🧩 Peter Grabarchuk 🇺🇦). Which cube can be formed with the pattern on the right? #MazeCube #Grabarchuk #puzzle #mzae #mazepuzzle…
Maze Cube (by 🧩 Peter Grabarchuk 🇺🇦). Which cube can be formed with the pattern on the right? #MazeCube #Grabarchuk #puzzle #mzae #mazepuzzle…
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Play with #cars and solve #puzzle crafted by PuzzleMove Inc.
Play with #cars and solve #puzzle crafted by PuzzleMove Inc.
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Experience
Education
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Uzhgorod National University
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Publications
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Strimko Book 1: 150 Easy-to-Master Number Logic Puzzles
Puzzlium, Inc.
Strimko is a logic number puzzle invented by The Grabarchuk Family in 2008. It is based on the idea of Latin squares described by a Swiss mathematician and physicist Leonhard Euler (1707-1783) in the 18th century. All Strimko puzzles are solvable with a pure logic, no special knowledge is required. Strimko uses only three basic elements: rows, columns, and streams. All elements have equal numbers of cells, and the goal is to make each row, column, and stream containing the whole set of…
Strimko is a logic number puzzle invented by The Grabarchuk Family in 2008. It is based on the idea of Latin squares described by a Swiss mathematician and physicist Leonhard Euler (1707-1783) in the 18th century. All Strimko puzzles are solvable with a pure logic, no special knowledge is required. Strimko uses only three basic elements: rows, columns, and streams. All elements have equal numbers of cells, and the goal is to make each row, column, and stream containing the whole set of specified numbers. Cells in the grid are organized into several streams of equal length, which often run diagonally and even branching. Such mechanics creates entangled patterns resulting in interesting challenges and unusual logic. This book contains a specially designed collection of 150 easy-to-master puzzles with 4 x 4 through 7 x 7 grid sizes. Puzzles are arranged from the easiest to the hardest ones so that you'll progress in solving skills with each next puzzle. Strimko challenges were handcrafted by Helen, Tanya, Serhiy, and Peter Grabarchuk, and up to date hundreds of original Strimko puzzles were published in various forms and platforms. Learn more at strimko.com.
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Puzzle Box, Volume 2
Dover Publications
This successor to Puzzle Box, Volume 1 presents another 300 challenges created by a team of a dozen renowned mathematicians and puzzle creators. Seventeen different types of puzzles include 3D puzzles, chess puzzles, connections, dissections, foldings, geometrical puzzles, logic problems, matchstick puzzles, mazes, moving pieces, number puzzles, put-togethers, strimkos, sudoku, and visual and word puzzles. The difficulty level of each puzzle is marked by stars, ranging from 2 to 5; 3 stars…
This successor to Puzzle Box, Volume 1 presents another 300 challenges created by a team of a dozen renowned mathematicians and puzzle creators. Seventeen different types of puzzles include 3D puzzles, chess puzzles, connections, dissections, foldings, geometrical puzzles, logic problems, matchstick puzzles, mazes, moving pieces, number puzzles, put-togethers, strimkos, sudoku, and visual and word puzzles. The difficulty level of each puzzle is marked by stars, ranging from 2 to 5; 3 stars indicate an average-level challenge. Whether you prefer picture puzzles or word puzzles or number puzzles, this fun-filled collection guarantees hours of entertainment.
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Puzzle Box, Volume 1
Dover Publications
300 mathematical puzzles appear in this original collection, devised by world-renowned mathematicians, puzzle creators, and devoted puzzle lovers. A unique puzzle project, it unites the efforts of a dozen authors, including software engineer Andrea Gilbert and Bram Cohen, author of the P2P BitTorrent protocol. Seventeen different types of challenges include 3-D puzzles, chess puzzles, connections, dissections, foldings, geometrical puzzles, logic problems, matchstick puzzles, mazes, moving…
300 mathematical puzzles appear in this original collection, devised by world-renowned mathematicians, puzzle creators, and devoted puzzle lovers. A unique puzzle project, it unites the efforts of a dozen authors, including software engineer Andrea Gilbert and Bram Cohen, author of the P2P BitTorrent protocol. Seventeen different types of challenges include 3-D puzzles, chess puzzles, connections, dissections, foldings, geometrical puzzles, logic problems, matchstick puzzles, mazes, moving pieces, number puzzles, put-togethers, strimko, sudoku, visual puzzles, weightings, and word puzzles. The difficulty level of each puzzle is marked by stars, ranging from 2 to 5. Average difficulty level is about 3 stars, promising puzzle enthusiasts many entrancing hours of solving and enjoyment.
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303 Three-Minute Puzzles
Puzzlewright
This latest collection from the famed Grabarchuk family—the preeminent creators of brain-teasing eye candy—bursts with color and creativity. And each one of these 303 diabolical teasers must be solved in three minutes or less! Brainiacs in search of a treasure trove of terrific teasers will find these perfect . . . and perfectly challenging.
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103 Puzzle Quizzes (Interactive Puzzlebook for Tablets and E-readers)
Grabarchuk Puzzles
Discover the 4th volume of the Top Rated Puzzlebook: Puzzle Quizzes series. In this brand-new puzzle collection you will find 103 pictorial, hand-crafted puzzle quizzes in different themes: logic, visual, spatial, counting, geometry, matchstick, coins, searching, and much more.
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100 Puzzle Quizzes (Interactive Puzzlebook for Tablets and E-readers)
Grabarchuk Puzzles
Discover the 1st volume of the Top Rated Puzzlebook: Puzzle Quizzes series. In this brand-new puzzle collection you will find 100 pictorial, hand-crafted puzzle quizzes in different themes: logic, visual, spatial, counting, geometry, matchstick, coins, searching, and much more.
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101 Puzzle Quizzes (Interactive Puzzlebook for Tablets and E-readers)
Grabarchuk Puzzles
Discover the 2nd volume of the Top Rated Puzzlebook: Puzzle Quizzes series, version for e-readers. In this brand-new puzzle collection you will find 101 pictorial, hand-crafted puzzle quizzes in different themes: logic, visual, spatial, counting, geometry, matchstick, coins, searching, and much more.
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102 Puzzle Quizzes (Interactive Puzzlebook for Tablets and E-readers)
Grabarchuk Puzzles
Discover the 3rd volume of the Top Rated Puzzlebook: Puzzle Quizzes series. In this brand-new puzzle collection you will find 102 pictorial, hand-crafted puzzle quizzes in different themes: logic, visual, spatial, counting, geometry, matchstick, coins, searching, and much more.
Other authorsSee publication -
104 Puzzle Quizzes (Interactive Puzzlebook for Tablets and E-readers)
Grabarchuk Puzzles
Discover the 5th volume of the Top Rated Puzzlebook: Puzzle Quizzes series. In this brand-new puzzle collection you will find 104 pictorial, hand-crafted puzzle quizzes in different themes: logic, visual, spatial, counting, geometry, matchstick, coins, searching, and much more.
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The Big, Big, Big Book of Brainteasers
Puzzlewright (Sterling, New York)
Here's the next BIG thing in puzzles! This spectacular collection offers visual puzzles of every type, shape, and size-all in lavish color. Solvers can wrap their minds around cube puzzles, construction problems, puzzles with patterns, mazes, paper clip teasers, and more. These brilliant brainteasers are a challenge for the mind and a treat for the eyes.
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Modern Classic Puzzles (Mensa®)
Sterling
Created by an art director at the Puzzles.COM website, these phenomenal original brainbusters—more than 200 of them—will stimulate your potential for thinking outside the box. Arranged from easiest to hardest, they’re especially devised for mind-expanding visual solving. And all it takes to crack their mysteries are a pencil, an eraser, patience, and, of course, boundless imagination! Arrange a hinged chain of 11 squares of different sizes into one large square—without overlapping them. Play…
Created by an art director at the Puzzles.COM website, these phenomenal original brainbusters—more than 200 of them—will stimulate your potential for thinking outside the box. Arranged from easiest to hardest, they’re especially devised for mind-expanding visual solving. And all it takes to crack their mysteries are a pencil, an eraser, patience, and, of course, boundless imagination! Arrange a hinged chain of 11 squares of different sizes into one large square—without overlapping them. Play two-hole billiards on the page, sending two balls into their respective pockets in just two strokes. Figure out how eight patterned cars fit into a checkered parking lot so their colors match the background exactly. Floor plans, tangrams, matchstick puzzles: the variety is amazing!
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The Simple Book of Not-So-Simple Puzzles
A K Peters/CRC Press
This collection of more than one hundred original and highly sophisticated puzzles presents challenges that require creative, “outside of the box” thinking. Many different types of puzzles are included, such as word, number, logical, visual, spatial, dissection, dividing, dot-connecting, matchstick, coin, and more. Each aesthetically appealing puzzle is designed to improve problem solving skills; train geometric, combinatorial, and spatial imagination; bolster visual perception and logical…
This collection of more than one hundred original and highly sophisticated puzzles presents challenges that require creative, “outside of the box” thinking. Many different types of puzzles are included, such as word, number, logical, visual, spatial, dissection, dividing, dot-connecting, matchstick, coin, and more. Each aesthetically appealing puzzle is designed to improve problem solving skills; train geometric, combinatorial, and spatial imagination; bolster visual perception and logical reasoning; and foster the development of a perseverant and self-confident approach to challenges.
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Projects
Honors & Awards
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The 2015 Gamespuzzles Annual Pentomino Excellence Award
Kadon Enterprises, Inc.
For the best new polymino concept of the year 2015 to Carl Hoff / Peter Grabarchuk for their "Untouchable 11" cube-fold hexomino challenges. http://www.gamepuzzles.com/gape15.htm
Languages
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English
Professional working proficiency
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Ukrainian
Native or bilingual proficiency
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Russian
Native or bilingual proficiency
Organizations
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International Puzzle Party
Invited participant
- PresentThe purpose of the International Puzzle Party is to provide an annual forum for serious puzzle collectors for the exchange and sale of puzzles, books and related items, as well as for fun and fellowship. In short: puzzling fun for puzzling enthusiasts. International Puzzle Parties have been held almost every year since 1978. IPP's are usually organized in three-year cycles in the USA, the Far East, and Europe.
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World Puzzle Chempionship
Contestant
- PresentThe first championship was held in 1992 in New York, USA.
More activity by 🧩 Peter
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Which chessboard it’s possible to assemble with 3 green chess pieces – Square or Oval? Write your answer ✅ in the Comments ✍️
Which chessboard it’s possible to assemble with 3 green chess pieces – Square or Oval? Write your answer ✅ in the Comments ✍️
Shared by 🧩 Peter Grabarchuk 🇺🇦
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Square or Oval Chessboard (by 🧩 Peter Grabarchuk 🇺🇦). Which chessboard it’s possible to assemble with 3 green chess pieces – Square or…
Square or Oval Chessboard (by 🧩 Peter Grabarchuk 🇺🇦). Which chessboard it’s possible to assemble with 3 green chess pieces – Square or…
Liked by 🧩 Peter Grabarchuk 🇺🇦
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Which five jigsaw pieces can assemble the C board? Write your answer ✅ in the Comments ✍️
Which five jigsaw pieces can assemble the C board? Write your answer ✅ in the Comments ✍️
Shared by 🧩 Peter Grabarchuk 🇺🇦
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Jigsaw C (by Peter Grabarchuk). Which five jigsaw pieces can assemble the C board? #JigsawC #Grabarchuk #puzzle #jigsaw #brainteaser #solve…
Jigsaw C (by Peter Grabarchuk). Which five jigsaw pieces can assemble the C board? #JigsawC #Grabarchuk #puzzle #jigsaw #brainteaser #solve…
Liked by 🧩 Peter Grabarchuk 🇺🇦
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Which three pieces can build a 4x5 chessboard? Write your answer ✅ in the Comments ✍️
Which three pieces can build a 4x5 chessboard? Write your answer ✅ in the Comments ✍️
Shared by 🧩 Peter Grabarchuk 🇺🇦
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Build 4x5 Chessboard (by 🧩 Peter Grabarchuk 🇺🇦). Which three pieces can build a 4x5 chessboard? Are you still looking for a perfect puzzle…
Build 4x5 Chessboard (by 🧩 Peter Grabarchuk 🇺🇦). Which three pieces can build a 4x5 chessboard? Are you still looking for a perfect puzzle…
Liked by 🧩 Peter Grabarchuk 🇺🇦
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The United States have announced a new $500 million military aid package for Ukraine. The package includes: - HIMARS rockets - Artillery shells -…
The United States have announced a new $500 million military aid package for Ukraine. The package includes: - HIMARS rockets - Artillery shells -…
Liked by 🧩 Peter Grabarchuk 🇺🇦
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Which paper strip is longer - Heart or O? Write your answer ✅ in the Comments ✍️
Which paper strip is longer - Heart or O? Write your answer ✅ in the Comments ✍️
Shared by 🧩 Peter Grabarchuk 🇺🇦
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HeartO Paper Strips (by 🧩 Peter Grabarchuk 🇺🇦). Which paper strip is longer - HeartO or O? Are you still looking for a nice puzzle gift🎁? Check…
HeartO Paper Strips (by 🧩 Peter Grabarchuk 🇺🇦). Which paper strip is longer - HeartO or O? Are you still looking for a nice puzzle gift🎁? Check…
Liked by 🧩 Peter Grabarchuk 🇺🇦
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Which piece can’t be found in the quilt? Write your answer ✅ in the Comments ✍️
Which piece can’t be found in the quilt? Write your answer ✅ in the Comments ✍️
Shared by 🧩 Peter Grabarchuk 🇺🇦
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Squares & Triangles (by 🧩 Peter Grabarchuk 🇺🇦). Which piece can’t be found in the quilt? #SquaresAndTriangles #Grabarchuk #puzzle #quiltpuzzle…
Squares & Triangles (by 🧩 Peter Grabarchuk 🇺🇦). Which piece can’t be found in the quilt? #SquaresAndTriangles #Grabarchuk #puzzle #quiltpuzzle…
Liked by 🧩 Peter Grabarchuk 🇺🇦
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Find two identical keys. Write your answer ✅ in the Comments ✍️
Find two identical keys. Write your answer ✅ in the Comments ✍️
Shared by 🧩 Peter Grabarchuk 🇺🇦
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Quadrant Keys (by 🧩 Peter Grabarchuk 🇺🇦). Find two identical keys. #QuadrantKeys #Grabarchuk #puzzle #key #quadrant #geometry #geometrypuzzle…
Quadrant Keys (by 🧩 Peter Grabarchuk 🇺🇦). Find two identical keys. #QuadrantKeys #Grabarchuk #puzzle #key #quadrant #geometry #geometrypuzzle…
Liked by 🧩 Peter Grabarchuk 🇺🇦
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Which dice can be formed from the pattern above? Write your answer ✅ in the Comments ✍️
Which dice can be formed from the pattern above? Write your answer ✅ in the Comments ✍️
Shared by 🧩 Peter Grabarchuk 🇺🇦
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Which Dice? (by 🧩 Peter Grabarchuk 🇺🇦). Which dice can be formed from the pattern above? #WhichDice #Grabarchuk #puzzle #dice #dicepuzzle…
Which Dice? (by 🧩 Peter Grabarchuk 🇺🇦). Which dice can be formed from the pattern above? #WhichDice #Grabarchuk #puzzle #dice #dicepuzzle…
Liked by 🧩 Peter Grabarchuk 🇺🇦
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