Nob Yoshigahara Puzzle Design Competition
2025 Results

The Nob Yoshigahara Puzzle Design Competition was established in 2001 to promote and recognize innovative new designs of mechanical puzzles.

  • 65 puzzles entered; the 2025 Competition Entries page includes design names, images, and descriptions.
  • The Puzzlers' Award is selected by IPP attendees; all other prizes selected by Judging Committee.
Puzzlers' Award
Jury Honorable Mention

Diagonal Twins
Yasuhiro Hashimoto

Diagonal Twins
Jury Grand Prize

Fafnir's Fortress
Luke Waier

Fafnir's Fortress

 Jury Grand Prize

Arch Nemesis
Rio Chilson

Arch Nemesis

Jury First Prize

 Gordian Knot
Lewis Evans, Robert Yarger

Gordian Knot

Jury Honorable Mention

Chained Frames
Koichi Miura

Chained Frames

Tetromino Island
Koichi Miura

Tetromino Island

  

Top 10 Vote Getters

The following designs were in the top-10 (+1 due to tie for 10th place)
in voting for the Puzzlers' Award, but were not otherwise recognized
with a formal Jury prize.

Tortoise Protocol - Junichi Yananose
Fudge - Takuro Kawasaki
Cold Duck Time - Stephan Baumegger
Tetromino+1 - Yasunari Makino
Toaster - Koichi Miura
Rombox - Yavuz Demirhan
Star Puzzle - Akira Nishihara

 

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