## Entries

 The Design Competition Guide (photos, instructions, and relevant notes) is available here.

The following is a summary of the 80 entries in the 2012 competition (click on images for larger photos). All designs are copyrighted and are the intellectual property of the designer. All rights are reserved.

 1€ Labyrinth Puzzle Designer: Robrecht Louage Goal: Remove the coin. Materials: Trespa, Acrylic, steel balls Classification: Routefinding puzzle Purchase: Contact the designer by ; price: 20€. 13 Triangles Designer: Ed Pegg Jr Goal: Place the 13 different triangles into the tray, using either an all-orthogonal or all-diagonal grid. Materials: Alder, walnut Classification: Put-together Purchase: Available at puzzlemist.com for \$25. 3 Color Cube Designer: Lucie Pauwels Goal: Make a red cube. Make a yellow cube. Make a blue cube. Materials: Wood - beech Classification: Put together Notes: The cube is dissected into 24 pieces, in a way that the total surface area is three times the surface of the cube; so it is possible to make 3 different colored cubes with the pieces. 3H=6T Designer: Hideki Tsuiki Goal: Fit both types of pieces into the small box, (1/8 of the large box). Put all nine pieces into the large box. Put all nine pieces into the large box so that pieces meet face to face, edge to edge, and vertex to vertex, and there is no gap between pieces. Materials: Wood (piece), acrylic (box) Classification: 3D Assembly Notes: The two puzzle pieces H (Hexagonal Bipyramid) and T (Triangular Antiprismoid) are imaginary cubes, i.e., objects which have square projections in three orthogonal directions just as the cube. H and T also form a tiling of 3D space. Purchase: Available from Kyoto University Museum Shop (http://imaginarycube.jimdo.com) or by . 3-Layer Tetraxis Array Designer: Jane and John Kostick Goal: Use the set of 61 sticks and blocks to put together seven compositions that symmetrically surround a center: Using one block and the 12 longest sticks Using the 12 blocks and the 12 mid-length sticks Using the 24 shortest sticks Combine 1 & 2 Combine 1 & 3 Combine 2 & 3 Combine 1, 2 & 3 Materials: Wood, magnets and silicon bronze Classification: Put-together Purchase: Visit kosticks.com. 3x3x3 Cube with Chess Board Faces Designer: Albert Gübeli Goal: Assemble the six pieces using partial folding to build a 3x3x3 checkerboard cube. Materials: 27 cubes MDF 19 mm, black and red adhesive tape Classification: ASS-CART / FOL-HSEP Purchase: Available at www.albinegri.ch; price: \$60. Arrow Blocks Designer: Goh Pit Khiam Goal: Starting from the position shown, restore the dark arrow, and leave space so that the light arrowhead may be restored. Materials: Box - Indian rosewood, pieces - maple, arrows: yellowheart and Brazilian blackwood Classification: Sequential movement Notes: The puzzle resembles Bill Cutler's Slide-Blocked Sliding Block Puzzle, but is a completely different concept. Only when restarting the puzzle are you allowed to remove the cover of the frame and freely rearrange the pieces to the starting position (shown here). Bare Bones Designer: Steve Winter Goal: Navigate the maze ball from the starting position at the entrance ring to the treasure position at the goal ring, and then back again. Materials: Laser sintered nylon, enamel paints Classification: Maze and Route/Dexterity Notes: Walls of a conventional 3D maze are replaced with rods. Many rods have been removed, and distracting rods added. A plastic case forms the outer walls so that the core of the maze becomes more visible. Purchase: Available for \$12.99 at Shapeways Ethereal Maze Puzzles. Use the "Send Message" link to inquire about custom orders. Befuddling Butterfly Designer: William Waite Goal: Fit the 10 pieces into the tray. There are 231 different solutions. Materials: Red alder and walnut Classification: 1.1 2-Dimensional assembly puzzle Purchase: Available at www.puzzlemist.com. Blind Burr Designer: Gregory Benedetti Goal: Disassemble and reassemble. Materials: Bloodwood Classification: Interlocking Purchase: Contact the designer by ; price: \$90. Bloom Designer: Volker Latussek Goal: Use the six petals to create a solid circle. Materials: Walnut Classification: Put-together Purchase: Available at www.ahmes.de. Bottle & Glass Designer: Victor Lam & Kazakh Wong Goal: Separate the bottle from the glass. Materials: Glass, rope, wooden beads , metal ring Classification: Disentanglement Purchase: Available at www.felixpuzzle.com , or contact the designer by . Price: \$50. Bubbloid122 Designer: Carl N. Hoff Goal: After the puzzle is scrambled the goal is to restore each face of the puzzle to a single solid color. Materials: 3D printed nylon, dyed black, screws, vinyl stickers Classification: Twisty puzzle – Slocum category 4.5 Purchase: Many variations available at the HK Now Store. BurrBlock Designer: Jerry McFarland Goal: Remove 4 key pieces (45 steps) Disassembly frame (15 steps) Materials: Walnut, maple and mahogany notched square sticks Classification: Interlocking Solid Puzzle Purchase: Contact the designer by ; price: \$250. Butterfly & Flowers Designer: Shusong Lin Goal: Open the box. Materials: Maple, cherry, walnut, and magnet Classification: Trick opening The "By George" Burr Designer: George Syriaque Goal: Disassemble and assemble six pieces to form a 6 piece burr-shaped puzzle. Materials: East Indian rosewood and maple Classification: Interlocking Notes: Level 2.4.3.2.3 serially interlocking burr. Purchase: Contact craftsman Brian Menold by or at Wood Wonders. May also be available at www.puzzlewood.de. Caged Polycubes Designer: John Rausch Goal: Fill the cage with the three tetracubes (R,S,T) and four pentacubes (either A,L,N,Q or F,J,L,P). Materials: Wood Classification: Put-together Notes: Use the assembly jig to test out assemblies before trying to put them into the cage. With the 17 non-planar pentacubes and 3 non-planar tetracubes, there are 110 piece combinations with 259 ways to fill the cage after removal of reflections and rotations. Purchase: Contact craftsman Tom Lensch by . Catch 22 Designer: Kim Klobucher Goal: Open the box. Materials: Argentine lignum vitae Classification: Opening Notes: After years of working with gravity pin designs, this is the result of what was initially considered a mistake, but was actually a great puzzle in disguise. Purchase: Available at kcubedesigns.com, or contact the designer by . Chamfered Cube Designer: Jane and John Kostick Goal: Use either set of 12 sticks to hold the 8 blocks in place at the corners of a cube. Add the other set of sticks to make a large chamfered cube, which is the shape of the small white block that can fit in the center of the arrangement. Materials: Wood and magnets Classification: Put-together Purchase: Visit kosticks.com. Chaplin Designer: Kohfuh Satoh Goal: Arrange the pieces to make a shape of a bowler hat. Materials: Wood (bubinga) Classification: Put-together puzzle Clustered Anew Designer: Scott Peterson Goal: Disassemble, then re-assemble the six pieces to form a cluster arrangement of six rhombic dodecahedrons. Materials: Wood: jatoba and ziricote Classification: Interlocking Purchase: Contact the designer by . COG-Cubed Designer: Tom Longtin Goal: Build an interlocking shape using several sets of a simple 3-piece puzzle. Materials: Laser-cut fiberboard Classification: Interlocking Notes: COG-Cubed is made from eight sets of the familiar COG 3-piece burr, properly oriented and arranged in a 2 x 2 x 2 cubic array. The pieces are constructed in such a way that larger and more complex puzzles may be created. Constrained Cube Designer: Tom van der Zanden Goal: First scramble the puzzle and then restore each face to a solid color by a sequence of face turns. Materials: ABS (injection molded), self-adhesive vinyl Classification: Sequential movement Notes: This puzzle is like a regular 3x3x3 Rubik's Cube, but on each face there is a little cogwheel that limits to what degree it can be turned. A face can be limited to turn only with 90 or 180 degrees of freedom, be free to turn a full 360 degrees or can even be blocked to not turn at all. By combining these variants many thousands of different puzzles can be made, some far harder than the original 3x3x3 cube. Purchase: Visit designer's website (www.tomvanderzanden.nl) for more information on when this puzzle will be available. Crazy Pentahedron Designer: Bao Daqing Goal: Scramble and restore. Materials: ABS plastic Classification: Rubik's type twisty puzzle Purchase: Visit twistypuzzles.com. Double Duals Designer: Jane and John Kostick Goal: Make a pair of complementary arrangements such that each one contains blocks and 12 sticks symmetrically surrounding a center. Then put them together so that one is inside the other, and they both surround the block without magnets. Then repeat the entire process with each set of sticks making the opposite arrangement. Materials: Wood and magnets Classification: Put-together Purchase: Visit kosticks.com. Double G Designer: JinHoo Ahn Goal: Separate the pieces, and restore the original shape. Materials: Aluminum Classification: Disentanglement Notes: No force required. Double Symmetry Designer: Tom Lee Goal: Arrange the three pieces (one piece is already fixed to the base) to make two symmetric figures simultaneously. Materials: Acrylic board Classification: 2-D Assembly Purchase: Contact the designer by ; price: \$10. Eyjafjallajökull-Puzzle Designer: Vladimir Krasnoukhov Goal: Make a symmetrical shape. Try to find both solutions, and it will become clear why the puzzle has this name. Materials: Laser-cut plastic Classification: 1.1 2 Dimensional Assembly Purchase: Contact the designer by . Ferris' Box Designer: Peter Wiltshire Goal: Open the puzzle box. Materials: Maple, walnut wood, brass and metal pieces Classification: 2.1 Trick or secret opening box Fidgety Rabbits Designer: Namick Salakhov Goal: Move all seven "rabbits" through the "gate" so that they can be removed from the device. Materials: PVC foamboard Classification: Sequential movement Purchase: Contact the designer by . Gear Pyraminx Designer: Timur Evbatyrov Goal: Scramble the puzzle, then find a solution to restore the original shape and match colors on all faces. Materials: ABS plastic vinyl, stickers Classification: Sequential movement Purchase: Mass-produced Gear Pyraminx are available at www.mefferts.com; price: \$36. Genie in the Bottle Designer: Erhan Cubukcuoglu Goal: Remove the bottle from the device. Materials: Mahogany, beech, African olive, padauk, etc. magnets, brass Classification: Take-apart Purchase: Visit puzzlerhan.wordpress.com or contact the designer by . Guile in the Box Designer: Scott Elliott Goal: Put the four pieces inside and shut the lid flat. Materials: PVC (vinyl) Classification: 1.2 3-Dimensional put-together, non-interlocking Purchase: Puzzles built-to-order for \$130; reduced price for test models. Contact the designer by or at mysd300.blogspot.com. Heptagon 48 Designer: Koshi Arai Goal: Fit the 2 sets of 6 tetrahepts (a total 48 heptagons) into the tray. Materials: Marble Classification: Put-together Notes: The regular heptagon can tile the plane if allowing for pentagonal space. This puzzle uses that tiling. A “tetrahept” is a figure made of four regular heptagons joined edge to edge. There are seven tetrahepts, but only six are compatible with this tiling. Purchase: Contact the designer by . Houdini's Torture Cell Designer: Brian Young Goal: Free Houdini from the Torture Cell. Materials: Walnut, plastic, metal, and magnets Classification: 2.1 Trick or Secret Opening Notes: You will discover some tools and must determine how to use them. Yes, there are lots of magnets in the puzzle but no hitting or banging is required to solve the puzzle. IPP32WDC Designer: Ken Irvine Goal: Place the I, P, P, 3, 2, W, D, C pieces in the frame so that they are enclosed by the frame and locked in place by the final piece. Materials: Red oak frame, poplar pieces Classification: Interlocking J Loops Designer: Camille Xu Goal: Remove the string from the wire. Materials: Steel wire, rope Classification: Disentanglement Purchase: Available at www.felixpuzzle.com, or contact the designer by ; price: \$10. Just One More Designer: Tom Lock Goal: Place all 17 pieces into the square tray. Materials: Walnut, birch veneer plywood Classification: Put-together Little Game Hunter Designer: Robert Yarger Goal: Discover two hidden chambers by moving external puzzle pieces; then take apart the entire puzzle into individual pieces and re-assemble. Materials: Mahogany and cedar Classification: Take-part Little Window Designer: Tom Jolly Goal: Take apart, or put together. Both equally challenging. Materials: Manzanita and zebrawood Classification: Take-apart Purchase: Visit www.jollygames.com. Lock Device Designer: Hiroshi Yamamoto Goal: Arrange the five pieces on the flat table so that all the pieces are interlocked with no relative movement. Materials: Walnut Classification: 2D interlocking Purchase: Contact the designer by . The "Locked Room Mystery" Puzzle Designer: Simon Nightingale Goal: Open box with the key provided. Materials: Corian, acrylic and steel Classification: Trick opening Lucy Designer: Kelly Snache Goal: Remove the free-floating lid. Materials: Box made from rosewood; internal made from misc. exotic woods Classification: Take-apart Purchase: Contact the designer by ; price: \$225 each. Match the Eight Cubes Designer: Gregory Benedetti Goal: Construct eight cubes. Slight flexing of pieces is required. Materials: Nylon colored and varnished Classification: Interlocking Purchase: Available at Shapeways addictopuz. The Matrix Designer: Pantazis Houlis Goal: Use the tubes to to arrange the four balls (each of different color) into their correct location. Materials: Two plastic cylinders, eight plastic pipes, and four plastic marbles/beads. Classification: Sequential movement Notes: The Matrix tubes represent two permutations and their inverses. Purchase: Visit www.houlis.com or contact the designer by . Mechanical Rings Designer: Yuta Akira Goal: Take apart, and put back together. Materials: Wood Classification: Disentanglement/Interlocking Notes: Inspired by Cast Coil. Multidodecahedron Designer: Tom van der Zanden Goal: Scramble the puzzle and then restore each face to a solid color by a sequence of turns of the 12 faces. Materials: Nylon (selective laser sintering), self-adhesive vinyl Classification: Sequential movement Notes: This puzzle is comprised of two puzzles, where a smaller puzzle sits inside of a larger puzzle. A turn on the outside puzzle also affects the inner puzzle. Of course, both puzzles must be solved simultaneously. By varying the cut depths on a face-turning dodecahedron, different types of pieces appear and disappear. In this puzzle, that combines the piece sets from the Master Pentultimate and Megaminx puzzles, all pieces that can be created using just two cuts are present and must be solved. Purchase: A DIY kit with plastic pieces is available at ShapewaysTom's Puzzles; price starting at \$225. Fully assembled and finished copies are also available at www.tomvanderzanden.nl or from the designer by . Nested Cubes Designer: Tom Lensch Goal: Arrange the nested cubes with lids so that they fit inside the largest box with the fixed brass rod. Each cube must be oriented so that the rod goes through one of its three holes. Materials: Walnut boxes and brass pin Classification: Put-together Purchase: Contact the designer by ; price: \$100. New 3-4-5iamonds Designer: Koshi Arai Goal: Place the 20 pieces into either side of the tray. One side of the tray is a single-layer triangle; the other side is a double-layer diamond. Goal 1: It doesn't matter whether pieces are light or dark side up. Goal 2: Place all pieces dark-side up. Materials: Rosewood coated fiberboard Classification: Put-together Purchase: Contact the designer by . One Circle - Two Circles Designer: Diniar Namdarian Goal: Arrange the marbles into groups of four with the same colors, and arrange the groups as indicated by the colored fragments of the top panel. The central circle allows for two different configurations: one with two distinct circles (each with 12 marbles), or a single closed loop with all 24 marbles. Materials: Acrylic Classification: 5 Sequential Movement Purchase: Contact the designer by ; price: 18€. Pack-Man Designer: Chris Enright Goal: Fit the five pieces flat within the tray. Materials: Acrylic and ABS plastics Classification: ASS-OTH Purchase: Contact the designer by . Peanut Gallery Designer: Eric Harshbarger Goal: Slide the pieces (without picking them up) so that they end up in the same arrangement as the start but where no two adjacent (touching) pieces have the same color. The start position is shown in the photo and on the bottom of the tray (identical line styles correspond to identical colors). Materials: Puzzle: Laser cut acrylic. Case: Re-used audio CD case with foam insert. Classification: Sliding Purchase: Available from www.ericharshbarger.org; price: \$25. Pearson Puzzle Pieces Designer: Randy Pearson Goal: Construct a cube using the eight pieces. Materials: Bubinga wood Classification: Interlocking Notes: Inspired by Stewart Coffin's Pieces-of-Eight. Purchase: Contact the designer by . Perplexing Palace Puzzle Designer: James Dalgety and Martin & Brian Scoefield Goal: The Queen, surrounded by her nine attendants, starts in the center of the palace. Take her out of the palace then return her and her attendants to their starting positions. Materials: Acrylic Classification: OPN-OTH Purchase: Visit puzzlemuseum.com. Prickly Burr 12 Designer: Peter Conrad Goal: Disassemble and reassemble the 12-piece burr. Materials: 3D-printed plastic Classification: Put-together Notes: This puzzles explores the possibilities of rhombic dodecahedral geometry by reinventing the traditional burr. The pieces are made to interlock without moving outside the framework of the shape on which the puzzle depends. Purchase: Contact the designer by ; price: \$240. Puzzle in a Puzzle Box Designer: Thomas Beutner Goal: Open the box, and assemble a pyramid-like stack of balls using all the pieces contained in the box. Materials: Walnut, ebony, birdseye maple, maple, bamboo, felt, magnets Classification: Trick opening puzzle box and 3D assembly Purchase: Contact the designer by . Rat Box Designer: Sam Cornwell Goal: Open the box into four pieces, then re-assemble box. Materials: Idigbu wood, brass screws Classification: OPN-BOX Rattle Twist Duo Designer: Osanori Yamamoto Goal: Disassemble and reassemble the three pieces. Two options for the ring pieces are provided. Materials: Wood Classification: Interlocking Purchase: Contact the designer by . ReCube Designer: Viktor Genel Goal: Take it apart into three pieces. This is only possible by moving all three parts at the same time. Put the puzzle back together. In order to do this the parts must be precisely positioned relative to each other. After that they will slide together with coordinated motion. Materials: Stainless steel infused with bronze. Classification: Coordinate motion Purchase: Contact the designer by . RotoPrism 2 Designer: David Pitcher Goal: Scramble the puzzle by making a few random twists on the three turning axes, then restore it to its original state with one color on each face, and all curved pieces in alignment with each other. Materials: Selective laser sintered (SLS) nylon, vinyl stickers, steel screws & springs. Classification: Sequential Movement Notes: 180 degree turns are required unless an axis face shows 4-way symmetry, in which cae 90 degree turns are possible. Purchase: Available at Shapeways Pitcher Puzzles. Six Cushion Shot Designer: Wayne Daniel Goal: Pack 19 pieces in 4x4x4 plastic box. Materials: Maple, sapella, padauk Classification: Packing Notes: This design is based on the cyclic path of a virtual particle bouncing around inside a cube. Purchase: Contact the designer by . Smartegg Designer: Andras Zagyvai Goal: Lead the stick from start (red) to finish (green), trough the spatial, multi layered, dynamic body. Materials: Bird cherry wood Classification: Sequential movement Purchase: Visit www.smartegg.eu. Square in the Bag Designer: Iwahiro (Hirokazu Iwasawa) Goal: Place the square completely inside the bag. No undue force is required. Materials: Acrylic (square piece), Nylon (bag) Classification: 1.2 3-D Assembly Square Waltz Designer: MINE (Mineyuki Uyematsu) with Kzy* (Kazuya Oiso) Goal: Arrange the four triangular pyramid pieces (all faces are right-triangles) on the transparent glass stage to make: Orange square White square Materials: Stained glass Classification: 3-Dimensional assembly Purchase: Available only in Japan at MINE * WEB-SHOP; price: 18,000¥. StarHex II Designer: Jacob Lettie, Kate Jones, Elijah Allen Goal: Assemble the 17 polystar tiles so that the total length of common edges between tiles of the same color is minimized. Materials: Lasercut acrylic in four transparent colors, and white tray Classification: Put-together Purchase: Available at Kadon Enterprises or contact by ; price \$35. Tango in Nut Designer: Namick Salakhov Goal: Take the halved sliding screw with stair-like thread out of the halved sliding nut. Find the shortest path. Materials: PVC foam board Classification: Sequential motion Notes: The extra piece is a tool to turn the screw when it cannot be grabbed. Purchase: Contact the designer by . Target in a Cube Designer: Bertrand Michaut Goal: Disassemble and reassemble the cube, while arranging the position of internal pieces. Materials: Wood: akume, satinwood, patawa Classification: Interlocking Trapentrix Designer: Timur Evbatyrov Goal: Scramble the puzzle by making random turns on two turning axes, and find a solution to restore the original colors pattern. Materials: Selective laser sintered (SLS) nylon, vinyl stickers Classification: Sequential movement Purchase: The DIY-kit is available at Shapeways shim's; the stickered version is available from designer by . Triangle-Square-Pentagon Designer: Emrehan Halici Goal: Using three pieces, form an isosceles triangle. Using four pieces, form a square. Using all of the five pieces, form a regular pentagon Materials: Plastic Classification: Put-together Tritalon Designer: Iwahiro (Hirokazu Iwasawa) Goal: Take out the coin. Put the coin back in place. Materials: Aluminum, coin Classification: 2.2 Secret Compartment Purchase: Available from Wil Strijbos via ; price: 18€. TriTangle Designer: David Pitcher Goal: Scramble the puzzle by making a few random turns on the three turning axes, then restore it to its original state with a single color on each face. Materials: Selective laser sintered (SLS) nylon, vinyl stickers, steel screws & springs. Classification: Sequential movement Purchase: Available at Shapeways Pitcher Puzzles. Twisted Symmetry Designer: Steve Winter Goal: Navigate the ball from the entrance to the exit; or navigate from the exit to the entrance. Materials: Laser sintered nylon, enamel paints, plastic box Classification: Maze and Route / Dexterity Notes: Walls of a conventional 3D maze are replaced with rods. Many rods have been removed, and distracting rods added. Also the outside frame has been altered to form symmetric designs. Purchase: Available at Shapeways Ethereal Maze Puzzles; price: \$16.99. Use the "Send Message" link to inquire about custom orders. Varibyrinth Designer: Rohit Kumar Singh Goal: Slide the blocks to construct a maze that provides a continuous path for the ball to travel from start to finish. Materials: Durafoam PA and Aqua 60 Classification: Sliding Piece Puzzles Notes: Only when the maze is correctly constructed, will you be able to slide the switch on the back panel to release the ball into the maze. The Vault Designer: Mike Toulouzas Goal: Open the vault, then close it. Materials: Woods: mahogany, ebony, chakte viga Classification: Trick opening Notes: Closing the vault is not just reversing the opening steps--a different mechanism prevents the door from being shut by accident! Purchase: Contact the designer by . W8-Variation Designer: Donghoon Pee Goal: Construct a shape that is the same shape as any of the eight individual pieces, just with twice the dimensions. Materials: Wood Classification: Put together Purchase: Contact the designer by . Washington Skyline Designer: William Waite Goal: Arrange the pieces into one continuous loop so as to form an imaginary Washington DC skyline. Each piece contains part of a building. Find the three hidden US presidents' faces. Materials: Walnut Classification: 1.1 2-Dimensional assembly puzzle Purchase: Available at puzzlemist.com With Luck or Effort Designer: Ichiro Kohno Goal: Get the wooden ball into the indentation at the end of the stick. Materials: Poplar, ebony, dogwood, glass bottle Classification: Dexterity Purchase: Contact the designer by . W-Toast Designer: Osanori Yamamoto Goal: Assemble the four identical pieces inside the center of the board, making a 4x4x3 block. Materials: Wood Classification: Interlocking Purchase: Contact the designer by . XXXII Designer: Sándor Bozóki Goal: Balance all 32 sticks on the top of the stand. Materials: Aluminum stand, pine sticks Classification: balancing puzzle Notes: XXXII is a variant of the nail balancing puzzle. However, sticks are without head and the top of the stand is not horizontal but peaked. Purchase: Available at www.matches.hu or contact designer by . Ze House of Mouse Ze Duong Designer: Stephen Chin Goal: Find Mousie hiding inside the house. Materials: Wood, electronics Classification: Slocum 2.1 Purchase: Contact the designer by .

 © 2001-2012 by IPP Design Competition Committee