| Date | User | Challenge | Score |
| Dimitris_Toulis | Introduction to Isogenies | 10 | |
| neferpitou | You either know, XOR you don't | 30 | |
| neferpitou | Favourite byte | 20 | |
| neferpitou | XOR Properties | 15 | |
| neferpitou | XOR Starter | 10 | |
| zDark | Extended GCD | 20 | |
| Nasimi | Encoding Challenge | 40 | |
| Maram_AYER | Chinese Remainder Theorem | 40 | |
| miruze | You either know, XOR you don't | 30 | |
| neferpitou | Bytes and Big Integers | 10 | |
| neferpitou | Base64 | 10 | |
| miruze | Favourite byte | 20 | |
| neferpitou | Hex | 5 | |
| neferpitou | ASCII | 5 | |
| Camilaqll | Network Attacks | 5 | |
| cpicozzi | ECB Oracle | 60 | |
| agentjlrmt | Broken RSA | 100 | |
| mapioe | XOR Properties | 15 | |
| Nasimi | You either know, XOR you don't | 30 | |
| miruze | XOR Properties | 15 | |
| agentjlrmt | Roll your Own | 125 | |
| mapioe | Lemur XOR | 40 | |
| small_worm | DLOG on the Surface | 40 | |
| agentjlrmt | Ellipse Curve Cryptography | 125 | |
| agentjlrmt | No Way Back Home | 100 | |
| Nasimi | Favourite byte | 20 | |
| neferpitou | Network Attacks | 5 | |
| mapioe | Encoding Challenge | 40 | |
| neferpitou | Great Snakes | 3 | |
| neferpitou | Finding Flags | 2 | |
| player_jack | Finding Flags | 2 | |
| agentjlrmt | Chinese Remainder Theorem | 40 | |
| tikoyo | Bytes and Big Integers | 10 | |
| jpl8 | JSON in JSON | 40 | |
| zDark | Greatest Common Divisor | 15 | |
| VxRabbit | Modular Square Root | 35 | |
| agentjlrmt | Successive Powers | 60 | |
| hossainvai96322 | ASCII | 5 | |
| agentjlrmt | Let's Decrypt Again | 175 | |
| agentjlrmt | Oracular Spectacular | 150 | |
| mapioe | XOR Starter | 10 | |
| mapioe | Bytes and Big Integers | 10 | |
| hossainvai96322 | Great Snakes | 3 | |
| mapioe | Base64 | 10 | |
| verdict7 | Successive Powers | 60 | |
| miruze | XOR Starter | 10 | |
| jpl8 | RSA or HMAC? | 35 | |
| stevenferg | Greatest Common Divisor | 15 | |
| tikoyo | Base64 | 10 | |
| SCHROBB | Flipping Cookie | 60 |
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