| Date | User | Challenge | Score |
| Mokir | Hex | 5 | |
| eoin | Ron was Wrong, Whit is Right | 90 | |
| mariosgour | RSA Signatures | 25 | |
| whit3g4ndalf | Diffusion through Permutation | 30 | |
| Adriana_m_j | Legendre Symbol | 35 | |
| mariosgour | Private Keys | 20 | |
| mariosgour | Euler's Totient | 20 | |
| Mokir | ASCII | 5 | |
| mariosgour | RSA Decryption | 20 | |
| mariosgour | Endless Emails | 150 | |
| Mokir | Great Snakes | 3 | |
| mariosgour | Crossed Wires | 100 | |
| Mokir | Finding Flags | 2 | |
| mariosgour | Public Keys | 15 | |
| eyadKing | Square Eyes | 35 | |
| whit3g4ndalf | Point Negation | 10 | |
| whit3g4ndalf | Background Reading | 5 | |
| Mahadfntx | Finding Flags | 2 | |
| malgorzata_p | Inferius Prime | 30 | |
| malgorzata_p | Manyprime | 40 | |
| Klaudia | Modulus Inutilis | 50 | |
| Adriana_m_j | Quadratic Residues | 25 | |
| malgorzata_p | Square Eyes | 35 | |
| Redender64 | Nativity | 60 | |
| Adriana_m_j | Modular Inverting | 25 | |
| Adriana_m_j | Modular Arithmetic 2 | 20 | |
| Adriana_m_j | Modular Arithmetic 1 | 20 | |
| malgorzata_p | Factoring | 15 | |
| H02NY4P3 | Favourite byte | 20 | |
| UrLastWish | Structure of AES | 15 | |
| Pillow2 | Bytes and Big Integers | 10 | |
| thesheenman | Hex | 5 | |
| p23103 | Modulus Inutilis | 50 | |
| Adriana_m_j | Extended GCD | 20 | |
| thesheenman | ASCII | 5 | |
| francois | Decrypting TLS 1.3 | 35 | |
| p23103 | Salty | 20 | |
| Pillow2 | Base64 | 10 | |
| thesheenman | Great Snakes | 3 | |
| p23103 | Manyprime | 40 | |
| thesheenman | Finding Flags | 2 | |
| p23103 | Square Eyes | 35 | |
| l3v | Favourite byte | 20 | |
| p23103 | Monoprime | 30 | |
| Pillow2 | Hex | 5 | |
| bowie41 | SSH Keys | 35 | |
| p23103 | Inferius Prime | 30 | |
| Pillow2 | ASCII | 5 | |
| reviselesson | Breaking SIDH | 250 | |
| p23103 | RSA Decryption | 20 |
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