| Date | User | Challenge | Score |
| CaptchaVerify | You either know, XOR you don't | 30 | |
| Jerbear3256 | Greatest Common Divisor | 15 | |
| BlueDuck | Bytes and Big Integers | 10 | |
| CaptchaVerify | Favourite byte | 20 | |
| BlueDuck | Base64 | 10 | |
| BlueDuck | Hex | 5 | |
| BlueDuck | ASCII | 5 | |
| BlueDuck | Great Snakes | 3 | |
| CaptchaVerify | XOR Properties | 15 | |
| JOJAR | Modular Square Root | 35 | |
| BlueDuck | Finding Flags | 2 | |
| lerequin | Adrien's Signs | 80 | |
| JOJAR | Chinese Remainder Theorem | 40 | |
| matthew13 | Legendre Symbol | 35 | |
| CaptchaVerify | XOR Starter | 10 | |
| darkside | DLOG on the Surface | 40 | |
| darkside | Montgomery Curves | 30 | |
| Dimbls | You either know, XOR you don't | 30 | |
| darkside | Image Point Arithmetic | 30 | |
| darkside | Where's the Supersingular Curve | 25 | |
| darkside | The j-invariant | 20 | |
| JOJAR | Legendre Symbol | 35 | |
| darkside | Bruce Schneier's Password: Part 2 | 250 | |
| Z3U55 | Stream of Consciousness | 80 | |
| Orion_Pax89 | ASCII | 5 | |
| CaptchaVerify | Bytes and Big Integers | 10 | |
| caroll | Great Snakes | 3 | |
| niwi | Finding Flags | 2 | |
| shachar125 | Resisting Bruteforce | 10 | |
| Dimbls | Favourite byte | 20 | |
| shachar125 | Keyed Permutations | 5 | |
| Marsianin | Modular Arithmetic 1 | 20 | |
| Marsianin | Extended GCD | 20 | |
| Ziablik | Background Reading | 5 | |
| Marsianin | Greatest Common Divisor | 15 | |
| caroll | Finding Flags | 2 | |
| NandaH | Finding Flags | 2 | |
| IsraelMC9 | Monoprime | 30 | |
| willopen | Base64 | 10 | |
| willopen | Hex | 5 | |
| willopen | ASCII | 5 | |
| IsraelMC9 | Factoring | 15 | |
| IsraelMC9 | RSA Signatures | 25 | |
| AlinaTyshUKR | Finding Flags | 2 | |
| IsraelMC9 | RSA Decryption | 20 | |
| IsraelMC9 | Private Keys | 20 | |
| Merci_b | Greatest Common Divisor | 15 | |
| IsraelMC9 | You either know, XOR you don't | 30 | |
| Mibur0 | Symmetry | 50 | |
| Pipatoz | Hex | 5 |
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