| Date | User | Challenge | Score |
| zhou11 | You either know, XOR you don't | 30 | |
| zhou11 | Favourite byte | 20 | |
| shewitt2 | ASCII | 5 | |
| zhou11 | XOR Properties | 15 | |
| ChickenJockey64 | You either know, XOR you don't | 30 | |
| jdmremi | Gaussian Reduction | 50 | |
| Hari542 | Modular Arithmetic 2 | 20 | |
| sveta_shumovai | The Matrix | 75 | |
| saro | Trust Games | 150 | |
| jdmremi | What's a Lattice? | 40 | |
| percy | Network Attacks | 5 | |
| jdmremi | Gram Schmidt | 30 | |
| nullex | ECB Oracle | 60 | |
| SneakerDoodle | Great Snakes | 3 | |
| SneakerDoodle | Finding Flags | 2 | |
| sveta_shumovai | Script Kiddie | 70 | |
| fskfjoisahg | Great Snakes | 3 | |
| jdmremi | Size and Basis | 15 | |
| jdmremi | Vectors | 10 | |
| sveta_shumovai | Static Client 2 | 120 | |
| PAWOS | Null or Never | 100 | |
| fskfjoisahg | Finding Flags | 2 | |
| gooseattack | Hex | 5 | |
| desa_05 | Extended GCD | 20 | |
| gooseattack | ASCII | 5 | |
| MidoS3d | Moving Problems | 150 | |
| kratta | Greatest Common Divisor | 15 | |
| suadcrptd | Finding Flags | 2 | |
| whoami4 | Modular Binomials | 80 | |
| gooseattack | Great Snakes | 3 | |
| samsam | Finding Flags | 2 | |
| gooseattack | Finding Flags | 2 | |
| ghaisan | Monoprime | 30 | |
| Dag0n | Modular Arithmetic 1 | 20 | |
| ghaisan | Factoring | 15 | |
| AnwarTheX | Chinese Remainder Theorem | 40 | |
| Meirm320 | The Good, The Pad, The Ugly | 100 | |
| ghaisan | RSA Signatures | 25 | |
| Evafat_U32 | Finding Flags | 2 | |
| yannou | Decrypting TLS 1.3 | 35 | |
| rania56 | Resisting Bruteforce | 10 | |
| alizak14 | Diffusion through Permutation | 30 | |
| kuroguro | Greatest Common Divisor | 15 | |
| yannou | Decrypting TLS 1.2 | 30 | |
| rania56 | Keyed Permutations | 5 | |
| Meirm320 | Pad Thai | 80 | |
| AnwarTheX | Modular Square Root | 35 | |
| ioi_ico | Deriving Symmetric Keys | 40 | |
| desa_05 | Greatest Common Divisor | 15 | |
| KongBai | Extended GCD | 20 |
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