Puzzle 1

1st March

18:45 UTC

Built by:


The air makes no sound!

Puzzle M1 Solution

Puzzle Preparation

To give you a better chance of solving this puzzle, we suggest that you look through some relevant background materials. For this particular puzzle, we recommend that you get upto speed on writing AIRs and that you attend the workshops on 1st March.

See puzzle details on Github

Puzzle link

Puzzle Hints

Make sure the AIR contains all the required constraints... Check the Rescue hash specification... Use the unconstrained capacity in Rescue to produce another valid nullifier...

Puzzle Winners

gold 01


Puzzle completed



silver 02


Puzzle completed



bronze 03

Trapdoor Tech

Puzzle completed



You can see all of the scores for this puzzle in the spreadsheet here.

Puzzle Solution

The winner of the puzzle write up was submitted by MatanHamilis as part of a team submission from tom marvolo riddle. You can view the solution and puzzle write up here. The background material required to solve the puzzle is also covered in the write up.
There were many excellent solution submissions which are linked below:
* Solution by SoloHiker
* Solution by huitseeker
* Solution by cronokirby
* Solution by TrapdoorTech
* Solution by logN
* Solution by mimoo
* Solution by hyunok oh
* Solution by niooss-ledger