Codebusters C

linzhiyan
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Re: Codebusters C

Post by linzhiyan »

Someone correct me if I'm wrong, but there's no Atbash Cipher this year...?
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Re: Codebusters C

Post by pepperonipi »

Name wrote: Thu Sep 19, 2019 7:31 pm
Blank25 wrote: Thu Sep 19, 2019 7:20 pm I've never done Codebusters before and I'm wondering how you are able to decide which cipher to use. Is it given usually? Or do you just have to somehow figure it out? And is this event really hard?
This is just my opinion, but I found code very easy to learn, but impossible to master.
This. Constantly practicing will be your best friend for this event.
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Re: Codebusters C

Post by l0lit »

linzhiyan wrote: Thu Sep 19, 2019 9:20 pm Someone correct me if I'm wrong, but there's no Atbash Cipher this year...?
There is no atbash cipher according to the rules, although an affine cipher with a = 25 and b = 25 would be the exact same thing :)
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Re: Codebusters C

Post by Longivitis »

Blank25 wrote: Thu Sep 19, 2019 7:20 pm I've never done Codebusters before and I'm wondering how you are able to decide which cipher to use. Is it given usually? Or do you just have to somehow figure it out? And is this event really hard?
If you're just starting out I suggest you practice the math-based ciphers first because they're really straightforward and generally not that hard to mess up. However, you should spend more time practicing aristo and patristos because they normally make up the bulk of the test and sets the top teams apart (especially the timed question). Study on letter frequencies and common words and you'll eventually get better at it.

https://cryptograms.puzzlebaron.com is a good site to start off on learning aristos and understanding the basics.

Pollux and Morbit ciphers, although new should not be that difficult because the rules state that the test has to give at least 6 out of the 10 possible digits so it's just a matter of brute forcing the others if you're half-decent at morse code (they also have to give you a table so it's a whole lot easier).
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Re: Codebusters C

Post by will0416 »

Longivitis wrote: Fri Sep 20, 2019 8:23 am
Blank25 wrote: Thu Sep 19, 2019 7:20 pm I've never done Codebusters before and I'm wondering how you are able to decide which cipher to use. Is it given usually? Or do you just have to somehow figure it out? And is this event really hard?
If you're just starting out I suggest you practice the math-based ciphers first because they're really straightforward and generally not that hard to mess up. However, you should spend more time practicing aristo and patristos because they normally make up the bulk of the test and sets the top teams apart (especially the timed question). Study on letter frequencies and common words and you'll eventually get better at it.

https://cryptograms.puzzlebaron.com is a good site to start off on learning aristos and understanding the basics.

Pollux and Morbit ciphers, although new should not be that difficult because the rules state that the test has to give at least 6 out of the 10 possible digits so it's just a matter of brute forcing the others if you're half-decent at morse code (they also have to give you a table so it's a whole lot easier).
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Re: Codebusters C

Post by Name »

will0416 wrote: Fri Sep 20, 2019 2:09 pm
Longivitis wrote: Fri Sep 20, 2019 8:23 am
Blank25 wrote: Thu Sep 19, 2019 7:20 pm I've never done Codebusters before and I'm wondering how you are able to decide which cipher to use. Is it given usually? Or do you just have to somehow figure it out? And is this event really hard?
If you're just starting out I suggest you practice the math-based ciphers first because they're really straightforward and generally not that hard to mess up. However, you should spend more time practicing aristo and patristos because they normally make up the bulk of the test and sets the top teams apart (especially the timed question). Study on letter frequencies and common words and you'll eventually get better at it.

https://cryptograms.puzzlebaron.com is a good site to start off on learning aristos and understanding the basics.

Pollux and Morbit ciphers, although new should not be that difficult because the rules state that the test has to give at least 6 out of the 10 possible digits so it's just a matter of brute forcing the others if you're half-decent at morse code (they also have to give you a table so it's a whole lot easier).
^^^ single best website for codebusters. constant addictive practice
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Re: Codebusters C

Post by pepperonipi »

will0416 wrote: Fri Sep 20, 2019 2:09 pm
Longivitis wrote: Fri Sep 20, 2019 8:23 am
Blank25 wrote: Thu Sep 19, 2019 7:20 pm I've never done Codebusters before and I'm wondering how you are able to decide which cipher to use. Is it given usually? Or do you just have to somehow figure it out? And is this event really hard?
If you're just starting out I suggest you practice the math-based ciphers first because they're really straightforward and generally not that hard to mess up. However, you should spend more time practicing aristo and patristos because they normally make up the bulk of the test and sets the top teams apart (especially the timed question). Study on letter frequencies and common words and you'll eventually get better at it.

https://cryptograms.puzzlebaron.com is a good site to start off on learning aristos and understanding the basics.

Pollux and Morbit ciphers, although new should not be that difficult because the rules state that the test has to give at least 6 out of the 10 possible digits so it's just a matter of brute forcing the others if you're half-decent at morse code (they also have to give you a table so it's a whole lot easier).
^^^ single best website for codebusters. constant addictive practice
I always thought it was cool to see your progress on that site. I've seen that my partners and I start out at "Very Slow" when solving most cryptograms, and then slowly with time, move up to "Slow" and then "Average", and so on.
happy new season!

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Re: Codebusters C

Post by Vortexx2 »

For the morbit code, are we given the key? I know we have to find the numbers based off of the key, but are we given what each of the numbers mean? Such as 1= . - , 2= -- , etc.?
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Re: Codebusters C

Post by jaggie34 »

Vortexx2 wrote: Wed Sep 25, 2019 2:13 pm For the morbit code, are we given the key? I know we have to find the numbers based off of the key, but are we given what each of the numbers mean? Such as 1= . - , 2= -- , etc.?
I think we'd be given a keyword or part of a keyword, but it also could just be that we're given a few numbers
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Re: Codebusters C

Post by gz839918 »

jaggie34 wrote: Wed Sep 25, 2019 3:59 pm
Vortexx2 wrote: Wed Sep 25, 2019 2:13 pm For the morbit code, are we given the key? I know we have to find the numbers based off of the key, but are we given what each of the numbers mean? Such as 1= . - , 2= -- , etc.?
I think we'd be given a keyword or part of a keyword, but it also could just be that we're given a few numbers
This appears to be right. Toebes' website has two sample prompts, one where some digits are given, and another where a keyword is revealed.
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