| Date | User | Challenge | Score |
| david07 | Modular Arithmetic 1 | 20 | |
| nad_jnnah | Hex | 5 | |
| OKlllng | Everything is Big | 70 | |
| gwpro | Network Attacks | 5 | |
| david07 | Extended GCD | 20 | |
| tigerBoss101 | Extended GCD | 20 | |
| david07 | Bytes and Big Integers | 10 | |
| OKlllng | Modulus Inutilis | 50 | |
| wudr | Network Attacks | 5 | |
| lve_yu | Confusion through Substitution | 25 | |
| aaanomy | Pad Thai | 80 | |
| halliana | The Matrix | 75 | |
| Mycr0ft | Modular Inverting | 25 | |
| david07 | Base64 | 10 | |
| halliana | Couples | 100 | |
| halliana | Mister Saplin's Preview | 80 | |
| OKlllng | Salty | 20 | |
| LastScholar | Favourite byte | 20 | |
| sudor269 | Export-grade | 100 | |
| marcofireball84 | ECB CBC WTF | 55 | |
| Mycr0ft | Modular Arithmetic 2 | 20 | |
| pranithshetty | Finding Flags | 2 | |
| gwpro | You either know, XOR you don't | 30 | |
| berran | Successive Powers | 60 | |
| gwpro | Modular Binomials | 80 | |
| Mycr0ft | Modular Arithmetic 1 | 20 | |
| halliana | André Encoding | 80 | |
| halliana | Special Isogenies | 30 | |
| halliana | Prime Power Isogenies | 50 | |
| david07 | Hex | 5 | |
| nad_jnnah | ASCII | 5 | |
| tigerBoss101 | Greatest Common Divisor | 15 | |
| tigerBoss101 | You either know, XOR you don't | 30 | |
| david07 | ASCII | 5 | |
| shura356 | Find the Lattice | 100 | |
| nad_jnnah | Great Snakes | 3 | |
| nad_jnnah | Finding Flags | 2 | |
| Adel_Cr | Structure of AES | 15 | |
| wudr | Great Snakes | 3 | |
| wudr | Finding Flags | 2 | |
| tigerBoss101 | Favourite byte | 20 | |
| whoami4 | Great Snakes | 3 | |
| qrfl | ASCII | 5 | |
| kaneman_of_zero | Resisting Bruteforce | 10 | |
| qrfl | Great Snakes | 3 | |
| whoami4 | Finding Flags | 2 | |
| qrfl | Finding Flags | 2 | |
| m4n059 | Modular Binomials | 80 | |
| tigerBoss101 | XOR Properties | 15 | |
| loster5998 | Finding Flags | 2 |
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