Codebusters C

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Re: Codebusters C

Post by will0416 »

ckenn4189 wrote: February 26th, 2020, 12:31 pm In a k1 or k2, what's the difference between cipher and plain text? This may seem like a silly question but I have seen many different answers for this.
Ciphertext is the message in its encrypted state, a.k.a. how it looks on the test before you solve it. Plaintext is the actual message (what you solve the cipher to actually mean).

Ex:

Ciphertext - IGND'L MY
Plaintext - WHAT'S UP
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Re: Codebusters C

Post by Jashan12 »

What times do you guys get on the bonus question would you say on average?
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Re: Codebusters C

Post by Umaroth »

Jashan12 wrote: March 4th, 2020, 7:57 am What times do you guys get on the bonus question would you say on average?
About 2:30-3 unless the quote is super long
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Re: Codebusters C

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Jashan12 wrote: March 4th, 2020, 7:57 am What times do you guys get on the bonus question would you say on average?
1:30 to 2:00
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Re: Codebusters C

Post by ckenn4189 »

What's the best way to practice monoalphabetic sub?
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Re: Codebusters C

Post by Jashan12 »

How many points roughly would get you to place?
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Re: Codebusters C

Post by thunderdog116 »

Hey I was wondering what resources have been instrumental while studying code. Is it just a lot of practice or is there a madness to the method by doing some preliminary work and finding bits of information along the way. So far, I've only found the sources recommended by Science Olympiad to be helpful and I feel that there's no intermediary between the two methods listed above.
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Re: Codebusters C

Post by jimmy-bond »

ckenn4189 wrote: March 4th, 2020, 1:50 pm What's the best way to practice monoalphabetic sub?
https://cryptograms.puzzlebaron.com/ has definitely helped me with mono subs. Another way is to have someone create them for you.
Jashan12 wrote: March 4th, 2020, 4:15 pm How many points roughly would get you to place?
Depends on a few factors, like what state you're in, length or difficulty of the test, point values of problems, etc. In California, I'd guess that you can only miss up to four problems on a moderate test in order to place, but then again that's just a guess. For example, when I was thrown into the event, we had an easy test. We missed a decryption matrix and a baconian and got second, while the first-place team got a perfect. On an 18-question test I gave out, the third-place team missed maybe 8 or 9 questions. To restate, it depends.
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Re: Codebusters C

Post by Umaroth »

jimmy-bond wrote: March 4th, 2020, 6:59 pm
ckenn4189 wrote: March 4th, 2020, 1:50 pm What's the best way to practice monoalphabetic sub?
https://cryptograms.puzzlebaron.com/ has definitely helped me with mono subs. Another way is to have someone create them for you.
Jashan12 wrote: March 4th, 2020, 4:15 pm How many points roughly would get you to place?
Depends on a few factors, like what state you're in, length or difficulty of the test, point values of problems, etc. In California, I'd guess that you can only miss up to four problems on a moderate test in order to place, but then again that's just a guess.
Orange County regionals had 16 questions including timed, top 3 teams finished, we and 2nd place got the exact same time and we won it because they missed one letter on a xenocrypt. In a competitive state, expect the top people to finish a shorter test (17 or less questions) and maybe miss 2-5 on a longer test.
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Re: Codebusters C

Post by jimmy-bond »

Umaroth wrote: March 4th, 2020, 7:01 pm Orange County regionals had 16 questions including timed, top 3 teams finished, we and 2nd place got the exact same time and we won it because they missed one letter on a xenocrypt. In a competitive state, expect the top people to finish a shorter test (17 or less questions) and maybe miss 2-5 on a longer test.
California will never cease to amaze me. I've never finished a test, but then again I've only ever been in a trio for Code like twice in the two years I've done it.
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