c4countdown

I finally got round to doing the Combination Lock puzzles on the back of Co:Leeds 2016 programme.

I have no solutions for "Hard" and 4 solutions for the "Crazy".

Would appreciate if you could have a look and see if you concur:

(Both puzzles concern a 4 reel padlock with digits 0-9, the object being to solve the code)

HARD

• Reel C times Reel A equals Reel B times Reel D
  The First reel and reel B are the same number
  The First reel plus reel C is 2 more than Reel B plus the last reel
  The digits total 14

CRAZY

• The answer is divisible by 5
  The first reel plus the last reel equals reel B
  Reel D plus reel B is 4 more than Reel C plus Reel A
  
  
  I have worked them out using Excel and filtered, but it seems the "Hard" one is impossible.

Is Reel A the first reel?

If so, 0086 works for Hard.

Assuming 1st is A, does 0086 work?

Type faster Fiona

Ahh silly me started with 1000 as the first combo as Excel kept removing my leading zeroes... Yes 0086 works and Reel A is the first reel.

As for the Crazy one?

I get 5 solutions to Crazy (probably your 4 plus the one before 1000), any of [0-4][5-9]65

Jon O'Neill wrote: ↑Wed Nov 11, 2020 4:26 pm Is Reel A the first reel?

Yes, but surprisingly Reel B is the last reel.

Thomas Cappleman wrote: ↑Wed Nov 11, 2020 5:04 pm I get 5 solutions to Crazy (probably your 4 plus the one before 1000), any of [0-4][5-9]65

Thanks Yes mine too end in 65. Glad it's not just me. Anyone got Excel skills to keep the leading zeroes?

Got it - just need to set as text rather than number

0565 your other one?

These puzzles were lifted from this website.

They refer to reels as 'the first reel' and 'reel A' (and so on) interchangeably.

Many of the puzzles can have multiple solutions.