Announcing the 2013 Competition

The Nob Yoshigahara Puzzle Design Competition was established in 2001 to promote and recognize innovative new designs of mechanical puzzles. The thirteenth annual competition begins this year, with judging and awards at IPP33 (August 2013). See the full details using the following links.

The 2012 Competition Results

• 80 puzzles entered; the 2012 Competition Entries page includes images, descriptions, solutions and purchasing information, when available.
• Judging was at IPP32 in Washington DC, USA, August 9-12, 2012. The Puzzlers' Award selected by IPP attendees; all other prizes selected by Judging Committee. Click on images below for more information.

Puzzlers' Award Square in the Bag Iwahiro (Hirokazu Iwasawa) Jury Grand Prize Double G Jinhoo Ahn Jury Grand Prize Smartegg Andras Zagyvai

Jury First Prize Ferris' Box Peter Wiltshire Houdini's Torture Chamber Brian Young

Jury Honorable Mention Heptagon 48 Koshi Arai RotoPrism 2 David Pitcher

Top 10 Vote Getters The following designs were in the top-10 in voting for the Puzzlers' Award, but were not otherwise recognized with a formal Jury prize. Blind Burr - Gregory Benedetti The "Locked Room Mystery" - Simon Nightingale The Vault - Mike Toulouzas Ze House of Mouse Ze Duong - Stephen Chin