| 100 | The 3n + 1 problem | ★ | | |
| 105 | The Skyline Problem | ★★ | | |
| 118 | Mutant Flatworld Explorers | ★★ | | |
| 141 | The Spot Game | ★ | | |
| 145 | Gondwanaland Telecom | ★★ | | |
| 263 | Number Chains | ★ | | |
| 264 | Count on Cantor | ★ | | |
| 299 | Train Swapping | ★ | | |
| 382 | Perfection | ★ | | |
| 389 | Basically Speaking | ★★ | | |
| 392 | Polynomial Showdown | ★ | | |
| 401 | Palindromes | ★★ | | |
| 406 | Prime Cuts | ★★ | | |
| 409 | Exeuses, Excuses! | ★★ | | |
| 441 | Lotto | ★★ | | |
| 455 | Periodic Strings | ★ | | |
| 458 | The Decoder | ★ | | |
| 482 | Permutation Arrays | ★ | | |
| 483 | Word Scramble | ★ | | |
| 488 | Triangle Wave | ★ | | |
| 490 | Rotating Sentences | ★ | | |
| 494 | Kindergarten Counting Game | ★ | | |
| 496 | Simply Subsets | ★★ | | |
| 499 | What's The Frequency, Kenneth? | ★ | | |
| 541 | Error Correction | ★ | | |
| 573 | The Snail | ★ | | |
| 579 | ClockHands | ★ | | |
| 591 | Box of Bricks | ★ | | |
| 630 | Anagrams (II) | ★★ | | |
| 673 | Parentheses Balance | ★★ | | |
| 706 | LC-Display | ★★ | | |
| 725 | Division | ★★ | | |
| 834 | Continued Fractions | ★★ | | |
| 865 | Substitution Cypher | ★★ | | |
| 913 | Joana and the Odd Numbers | ★ | | |
| 948 | Fibonaccimal Base | ★★ | | |
| 1225 | Digit Counting | ★ | | |
| 1237 | Expert Enough? | ★★ | | |
| 1260 | Sales | ★ | | |
| 1339 | Ancient Cipher | ★★ | | |
| 1368 | DNA Consensus String | ★★ | | |
| 1583 | Digit Generator | ★ | | |
| 1585 | Score | ★ | | |
| 1587 | Box | ★ | | |
| 1594 | Ducci Sequence | ★ | | |
| 10008 | What's Cryptanalysis? | ★ | | |
| 10010 | Where's Waldorf? | ★ | | |
| 10018 | Reverse and Add | ★★ | | |
| 10035 | Primary Arithmetic | ★ | | |
| 10038 | Jolly Jumpers | ★ | | |
| 10041 | Vito's family | ★ | | |
| 10050 | Hartals | ★ | | |
| 10056 | What is the Probability? | ★★ | | |
| 10062 | Tell me the frequencies! | ★★ | | |
| 10071 | Back to High School Physics | ★ | | |
| 10079 | Pizza Cutting | ★ | | |
| 10082 | WERTYU | ★ | | |
| 10093 | An Easy Problem! | ★ | | |
| 10101 | Bangla Numbers | ★★ | | |
| 10107 | What is the Median? | ★ | | |
| 10110 | Light, more light | ★★ | | |
| 10161 | Ant on a Chessboard | ★★ | | |
| 10188 | Automated Judge Script | ★ | | |
| 10189 | Minesweeper | ★ | | |
| 10190 | Divide, But Not Quite Conquer! | ★ | | |
| 10221 | Satellites | ★★ | | |
| 10222 | Decode the Mad man | ★ | | |
| 10226 | Hardwood Species | ★★ | | |
| 10235 | Simply Emirp | ★ | | |
| 10242 | Fourth Point!! | ★★ | | |
| 10268 | 498-bis | ★★ | | |
| 10327 | Flip Sort | ★ | | |
| 10409 | Die Game | ★ | | |
| 10415 | Eb Alto Saxophone Player | ★★ | | |
| 10420 | List of Conquests | ★★ | | |
| 10443 | Rock, Scissors, Paper | ★ | | |
| 10474 | Where is the marble | ★ | | |
| 10487 | Closest Sums | ★ | | |
| 10550 | Combination Lock | ★ | | |
| 10591 | Happy Number | ★ | | |
| 10633 | Rare Easy Problem | ★ | | |
| 10642 | Can You Solve It | ★ | | |
| 10783 | Odd Sum | ★ | | |
| 10789 | Prime Frequency | ★ | | |
| 10813 | Traditional BINGO | ★★ | | |
| 10815 | Andy’s First Dictionary | ★★ | | |
| 10903 | Rock-Paper-Scissors Tournament | ★★ | | |
| 10908 | Largest Squares | ★★ | | |
| 10921 | Find the Telephone | ★ | | |
| 10922 | 2 the 9s | ★ | | |
| 10931 | Parity | ★ | | |
| 11000 | Bee | ★ | | |
| 11005 | Cheapest Base | ★★ | | |
| 11054 | Wine trading in Gergovig | ★ | | |
| 11063 | B2-sequence | ★ | | |
| 11192 | Group Reverse | ★ | | |
| 11219 | How old are you? | ★ | | |
| 11220 | Decoding the message. | ★ | | |
| 11233 | Deli Deli | ★★ | | |
| 11321 | Sort! Sort!! And Sort!!! | ★ | | |
| 11332 | Summing Digits | ★ | | |
| 11349 | Symmetric Matrix | ★ | | |
| 11364 | Parking | ★ | | |
| 11389 | The Bus Driver Problem | ★★ | | |
| 11417 | GCD | ★ | | |
| 11455 | Behold My Quadrangle | ★ | | |
| 11461 | Square Numbers | ★ | | |
| 11498 | Division of Nlogonia | ★ | | |
| 11541 | Decoding | ★ | | |
| 11576 | Scrolling Sign | ★ | | |
| 11634 | Generate random numbers | ★ | | |
| 11636 | Hello World! | ★ | | |
| 11639 | Guard the Land | ★ | | |
| 11677 | Alarm Clock | ★ | | |
| 11678 | Cards' Exchange | ★ | | |
| 11689 | Soda Surpler | ★ | | |
| 11728 | Alternate Task | ★ | | |
| 11743 | Credit Check | ★ | | |
| 11764 | Jumping Mario | ★ | | |
| 11824 | A Minimum Land Price | ★ | | |
| 11917 | Do Your Own Homework! | ★★ | | |
| 11934 | Magic Formula | ★ | | |
| 11942 | Lumberjack Sequencing | ★ | | |
| 11956 | Brainfuck | ★★ | | |
| 12015 | Google is Feeling Lucky | ★ | | |
| 12019 | Doom's Day Algorithm | ★ | | |
| 12195 | Jingle Composing | ★ | | |
| 12250 | Language Detection | ★ | | |
| 12592 | Slogan Learning of Princess | ★★ | | |
| 12602 | Nice Licence Plates | ★ | | |
| 12650 | Dangerous Dive | ★ | | |
| 12820 | Cool Word | ★★ | | |
| 12908 | The book thief | ★ | | |
| 12959 | Strategy Game | ★ | | |
| 12970 | Alcoholic Pilots | ★★ | | |
| 13055 | Inception | ★★ | | |
| 13171 | Pixel Art | ★★ | | |
| 13190 | Rockabye Tobby | ★★ | | |