| Date | User | Challenge | Score |
| r34770c | Greatest Common Divisor | 15 | |
| Aryaethn | LWE High Bits Message | 15 | |
| Pizz | Square Eyes | 35 | |
| Teneeduu2 | Square Eyes | 35 | |
| itsmerb2007 | XOR Starter | 10 | |
| loser | Bytes and Big Integers | 10 | |
| akio | Base64 | 10 | |
| Teneeduu2 | Monoprime | 30 | |
| akio | Hex | 5 | |
| akio | ASCII | 5 | |
| Pizz | Monoprime | 30 | |
| akio | Great Snakes | 3 | |
| Teneeduu2 | Inferius Prime | 30 | |
| VISAS_STARFROST | No Way Back Home | 100 | |
| TheMachiner | Greatest Common Divisor | 15 | |
| TheMachiner | You either know, XOR you don't | 30 | |
| Pizz | Inferius Prime | 30 | |
| TheMachiner | Favourite byte | 20 | |
| nk0 | Nothing Up My Sleeve | 150 | |
| Lilo | Base64 | 10 | |
| TheMachiner | XOR Properties | 15 | |
| engman | Manyprime | 40 | |
| Pizz | Factoring | 15 | |
| akio | Finding Flags | 2 | |
| engman | Square Eyes | 35 | |
| loser | Base64 | 10 | |
| ciprianursulean | Private Keys | 20 | |
| engman | Monoprime | 30 | |
| loser | Hex | 5 | |
| Lilo | Hex | 5 | |
| julesfress | XOR Properties | 15 | |
| engman | Inferius Prime | 30 | |
| 0xAnwar | Confusion through Substitution | 25 | |
| jimarchel | You either know, XOR you don't | 30 | |
| loser | ASCII | 5 | |
| Lilo | ASCII | 5 | |
| signoworrior7888 | Finding Flags | 2 | |
| loser | Great Snakes | 3 | |
| Pizz | RSA Signatures | 25 | |
| engman | Factoring | 15 | |
| sammy177 | Computing Shared Secrets | 30 | |
| sammy177 | Computing Public Values | 25 | |
| BackDoorRat | Extended GCD | 20 | |
| Trapp | XOR Starter | 10 | |
| arp1t0x | Generators of Groups | 20 | |
| engman | RSA Signatures | 25 | |
| xfnx | ProSign 3 | 100 | |
| sammy177 | Generators of Groups | 20 | |
| Lilo | Great Snakes | 3 | |
| sammy177 | Working with Fields | 10 |
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