The Design Competition Guide (same content: photos, instructions, and notes) will available here after judging is complete.

Arch Nemesis

Designer: Rio Chilson
Goal: Find the maker's mark.

Arrow Mazes

Designer: Peter Gal
Goal: Each puzzle is in two parts: first arrange the pieces to form the required layout of arrows, and then solve the arrow maze. To solve a maze, start from a corner and reach the diagonal corner. From any arrow, you may move to any square along the direction the arrow points – horizontally, vertically, or diagonally – regard­less of how far away it is.

Bumpy

Designer: Yasuhiro Hashimoto
Goal: Pack the block into the case

Cabrio

Designer: Dr. Volker Latussek
Goal: Pack the five pieces into the box with the sliding lid

Caged Marbles

Designer: Sjaak Griffioen
Goal: Fit all the marbles into the two-part cube and close it with a satisfying "click".

Notes: The puzzle includes a variety of challenges with various difficulty levels.

Calendarium3

Designer: Dmitry Andreev (Pluton's puzzles)
Goal: Move the tiles so that the desired date is visible through the windows on the lid.

C-Bin (a Cubino Puzzle)

Designer: Doug Engel
Goal: Assemble the four pieces (Cubinos) so that all colored cubies have a direct neighbor.

Chained Frames

Designer: Koichi Miura
Goal: Remove the two identical loops from the third piece

Chaotic Jigsaw

Designer: Lucie Pauwels
Goal: Assemble the pieces in the box

Chocolatine Puzzle Box

Designer: Mickael Simonetto
Goal: Find the hidden key ingredient to make a chocolatine

C-Jam

Designer: Yuu Asaka
Goal: Remove the two rings from the disk and reassemble them

ClusterLock

Designer: MA Chun Yeung
Goal: Place all the pieces inside the tray

Coffee

Designer: Toshiki Inaba
Goal: Remove the ring from the sphere

Cold Duck Time

Designer: Stephan Baumegger
Goal: Insert all pieces inside the box. The top surface should be filled, with hidden voids left underneath.

Day by Day

Designer: MA Chun Yeung
Goal: Place the seven pieces into the tray

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Designer: Acazu
Goal: Place the pieces into the tray

Diagonal Twins

Designer: Yasuhiro Hashimoto
Goal: Pack the four pieces into the box

dʒi

Designer: Abhishek Ruikar
Goal: Assemble the three pieces into a 4x4x5 bounding box

Eel Fishing

Designer: George Sicherman
Goal: Arrange the eel and the three fishhooks, without overlapping, to make a symmetric shape

11 Strip Challenge

Designer: Davis Strack
Goal: Pack the 11 pieces into the 9x9 frame

Fafnir's Fortress

Designer: Luke Waier
Goal:

• Obtain the Sword of Sigurd
• Slay (remove) Fafnir the dragon
• Recover Fafnir's stolen treasure

Fudge

Designer: Takuro Kawasaki
Goal: Pack the four pieces into the box

Fukurou

Designer: Shih Yu Chung
Goal: Find the hidden treasure

Genie in a Bottle

Designer: Stephen Winter
Goal: Slide the tiles to help the genie escape, by moving pieces from the Start to Goal arrangements. The starred pieces do not move.

Gordian Knot

Designer: Lewis Evans/ Robert Yarger
Goal: Open the box

Heart

Designer: Alex Owens
Goal: Dissemble the puzzle and find the prizes

HoMaze to Vasarely

Designer: Peter Gal
Goal: Each puzzle is in two parts: first arrange the pieces to form the required layout of tiles, and then solve the pattern maze. To solve a maze, start from a corner and reach the diagonal corner. You may move only vertically or horizontally, and any number of squares, consistently following one of the following rules:

• Move only to a tile that differs in all three properties (background color, pattern shape, pattern color) from your current tile.
• Move only to a tile that matches in at least two properties with your current tile.

Hurricane

Designer: Doug Engel
Goal: Link the six rings so that each one links through the other five (called a complete linkage), and so that each one twists the same way, resembling the twist of a hurricane.

Notes: The gaps are cut directly and asymmetrically into the rings (rather than due to a helical gap), and two different ways of mating the gaps are possible.

Hypex

Designer: Oskar van Deventer, and Iwahiro
Goal: Swap the golden tiles from 12345 to 54321

Notes: The minimum number of swaps to solve grows more than exponentially with the number of tiles. Even with 5 tiles, the puzzle requires 48 swaps to complete.

Interlocking quartet

Designer: Manuilov Yaroslav
Goal: Extract the four sliders from the frame, then return them to fully inside the frame

Kleinside Out

Designer: Sándor Bozóki
Goal: Put the ring into the bottle and then pull the ring out

Ladybug

Designer: PuzzlerWJ
Goal: Retrieve the ladybug token

Le Collier de Tante Liesel

Designer: Dr. Volker Latussek
Goal: Form ten spheres

Less is More

Designer: Dr. Volker Latussek
Goal: Pack the six pentominoes into the frame so that they do not slide. Remove one piece—the remaining five pieces still cannot slide. Repeat this step until there are only three pieces left that cannot slide.

Linking 6 Cubes

Designer: Ichiro Kohno
Goal: The six cubes formed must connect to each other by ¼ or ½ of their faces, and all magnets must be paired with attractive polarity. There are three goals:

• Completely hide the small cube (left) with no space left over
• Surround and anchor the full cube (center)
• Surround and anchor the magnetically attached pair of cubes (center + right)

Marshmallow Test Burr

Designer: Bram Cohen
Goal: Assemble the six very similar pieces into a cube

Metron

Designer: Laszlo Molnar
Goal: Pack the tetrominoes in the triangular space with overlapping edges

Minima Duo

Designer: Frederic Boucher & Tye Stahly
Goal: Pack all the pieces into the box so that nothing can move significantly, including anything discovered during solving

MOON Box

Designer: Peter Canham
Goal: Open the box, and find the prize

No.12

Designer: Taisei Moriya
Goal: Separate the two parts and reconnect them

Not a 6x6x6

Designer: Brian Kaplan
Goal: Scramble the pieces and then return to a cube shape

Occulo

Designer: Bill Voyce
Goal: Get the steel ball from one end of the tube to the other via a series of sections containing various chambers, using only the senses of touch and sound

Notes: This puzzle was specifically designed to not disadvantage vision-impaired solvers.

Onigiri

Designer: Teddy Sakamoto
Goal: Take five balls out, then put them back

Pajama Party

Designer: George Sicherman
Goal: Join the two pieces to make six shapes with mirror symmetry and three shapes with rotational symmetry

Puzzling Clover

Designer: Hajime Katsumoto
Goal: Make a four-leaf clover in the frame.

Rombox

Designer: Yavuz Demirhan
Goal: Put all four pieces inside the box. The colored layers of the pieces need to match with the colored layers of the box.

Satisfiable Puzzle

Designer: Oskar van Deventer
Goal: Push so that seven buttons are down at the same time

Serendipitous Diskovery

Designer: Oskar van Deventer, Mike Wood
Goal: Scramble the puzzle by turning the rotors, and then solve without touching the magnetic disks

Shells & Cores

Designer: Hiroaki Hamanaka
Goal: Insert the cores into each of the shells, alternating white and dark pieces.

Shift X Shift

Designer: Isaku Nagai
Goal: Slide the pieces to mix colors, and then return them to their original color arrangement

6N

Designer: Osanori Yamamoto
Goal: Build an apparent cube inside the box (all openings are completely filled, hiding any empty space inside the box)

Skyscraper

Designer: PuzzlerWJ
Goal: Retrieve the hidden figurine

Square Lock

Designer: Osanori Yamamoto
Goal: Place all six pieces inside any of the frames so that they do not slide

Squential

Designer: Stijn Albrecht & Sander De Ridder
Goal: Unlock the sphere to release the core, and then release its secret

Star Puzzle

Designer: Akira Nishihara
Goal: Form the regular Pentagram and Octagram stars

Strongbox

Designer: Laszlo Molnar
Goal: Lock the pieces in the box

Super Nova

Designer: Doug Engel
Goal: Disassemble the figure into five pieces

Notes: SNP then resembles an exploding star having positive and negative shapes holding the center 'star' or ball

Tetra Cage

Designer: George Bell
Goal: Assemble the 12 pieces into a self-supporting structure which traps the tetrahedron. The use of any external tool is allowed (rubber bands may be useful!)

Tetromino Island

Designer: Koichi Miura
Goal: Place the five pieces flat on the island stand (without overlapping)

Tetromino+1

Designer: Yasunari Makino
Goal: Pack all the pieces into the box with a restricted opening and sliding blocker

Toaster

Designer: Koichi Miura
Goal: Take the two pieces out of the case

Tortoise Protocol

Designer: Junichi Yananose
Goal: Open the box to find the secret compartment and prize

Unfifteen

Designer: Dmitry Andreev (Pluton's puzzles)
Goal: Solve like the classic 15 Puzzle, except that adjacent pieces are locked parallel to their shared edges, forcing adjacent pieces to move together as a single unit

Watermelon²

Designer: Aimee & Justin Tinker
Goal: Pack the slices into the watermelon making an apparent cube

Wild Puzzle Bird

Designer: Pantazis Houlis
Goal: Warm-up: place some of the four semi-transparent blue pieces on top of some of the three yellow pieces (giving green) to form three identical shapes each with a different color) Then place the pieces in a similar way to get four identical non-symmetrical shapes