| Date | User | Challenge | Score |
| akina_pst_tsp | ASCII | 5 | |
| YWzhong | Salty | 20 | |
| biaso | Favourite byte | 20 | |
| akina_pst_tsp | Great Snakes | 3 | |
| Ayachi0721 | Modular Inverting | 25 | |
| biaso | XOR Properties | 15 | |
| Gabri373 | Factoring | 15 | |
| maalissa | Base64 | 10 | |
| irootwizard | Quadratic Residues | 25 | |
| akina_pst_tsp | Finding Flags | 2 | |
| lucy54 | Moving Problems | 150 | |
| Antonio_margaret | Modular Inverting | 25 | |
| j_m | Nativity | 60 | |
| archex | Smooth Criminal | 60 | |
| crypto_saka_hack | Smooth Criminal | 60 | |
| MeanWant | XOR Properties | 15 | |
| malak_maythim | Finding Flags | 2 | |
| YWzhong | Manyprime | 40 | |
| maalissa | Hex | 5 | |
| Ayachi0721 | Modular Arithmetic 2 | 20 | |
| Antonio_margaret | Modular Arithmetic 2 | 20 | |
| maalissa | ASCII | 5 | |
| AAAA | Encoding Challenge | 40 | |
| Mianzo | Hex | 5 | |
| sjoerd_r | XOR Starter | 10 | |
| AAAA | ASCII | 5 | |
| Ayachi0721 | Modular Arithmetic 1 | 20 | |
| Antonio_margaret | Modular Arithmetic 1 | 20 | |
| j_m | Bounded Noise | 50 | |
| AAAA | Bytes and Big Integers | 10 | |
| mokhtar | ASCII | 5 | |
| AAAA | Base64 | 10 | |
| irootwizard | Modular Inverting | 25 | |
| sjoerd_r | Bytes and Big Integers | 10 | |
| Antonio_margaret | Extended GCD | 20 | |
| mokhtar | Network Attacks | 5 | |
| sjoerd_r | Base64 | 10 | |
| maalissa | Great Snakes | 3 | |
| sjoerd_r | Hex | 5 | |
| irootwizard | Modular Arithmetic 2 | 20 | |
| DeViator | Confusion through Substitution | 25 | |
| MeanWant | XOR Starter | 10 | |
| sjoerd_r | ASCII | 5 | |
| ds0xxd3r | Modular Square Root | 35 | |
| AAAA | Hex | 5 | |
| irootwizard | Modular Arithmetic 1 | 20 | |
| bobiealice | ECB CBC WTF | 55 | |
| Undec1phered | Great Snakes | 3 | |
| hoory | Finding Flags | 2 | |
| Mianzo | ASCII | 5 |
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