Challenge #239: SEND + MORE = MONEY

[AryCardoso]

Done!

[paulfound]

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1023 to 9876 Brute force

Very hard coded and brute forced, but I get 42 options. 

[Jean-Balteryx]

Here is my solution !

[peter_gb]

Well this was fun, but I took way too much time to figure out generating the combinations so the final part isn't as dynamic as I'd like. 
Manually reconstructed the sentence/calc rather than having the input be dynamic to a different puzzle. Spent a good 2 hours on it though so time to be content with a working solution and move on!  Still quite brute force but runs in <15 mins.

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[PhilipMannering]

The itertools to the rescue again. See my predominately Python based solution below.

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Workflow

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Notebook

[A2H]

An efficient solution, exploring all possible combination with the right filter at the right time !

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[hanykowska]

yet another brute force approach 😬

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went with generate rows instead of append

[JosephSerpis]

Challenge Completed

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[KilianL]

Tough challenge! Took me some time to figure out how to streamline the brute force approach.

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Method 1: Brute Force - go through all combinations until match

Method 2: using Brute Force with conditions

We have two conditions:
1. unique values
2. the equation has to fit

The second condition can be broken down to:
1. the last digits follow: mod(D+E,10)=Y
2. the following digits follow e.g. mod(N+R+carryOver,10)=E

Repeating these conditions for each digit position limits the combinations to check by a huge margin.

[jamielaird]

Here's my solution, complete with a slightly embarassing number of Append tools...

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