| # | Problem | Language | Link | Date |
|---|---|---|---|---|
| 2 | Sum in Loop | Python | view | May 26 2026 |
| 3 | Sums in Loop | Python | view | May 26 2026 |
| 4 | Minimum of Two | Python | view | May 26 2026 |
| 5 | Minimum of Three | Python | view | May 26 2026 |
| 6 | Rounding | Python | view | May 26 2026 |
| 7 | Fahrenheit to Celsius | Python | view | May 26 2026 |
| 8 | Arithmetic Progression | Python | view | May 26 2026 |
| 9 | Triangles | Python | view | May 26 2026 |
| 10 | Linear Function | Python | view | May 26 2026 |
| 11 | Sum of digits | Python | view | May 26 2026 |
| 12 | Modulo and time difference | Python | view | May 26 2026 |
| 13 | Weighted sum of digits | Python | view | May 26 2026 |
| 14 | Modular Calculator | Python | view | May 26 2026 |
| 15 | Maximum of array | Python | view | May 26 2026 |
| 16 | Average of an array | Python | view | May 26 2026 |
| 17 | Array Checksum | Python | view | May 26 2026 |
| 18 | Square Root | Python | view | May 26 2026 |
| 19 | Matching Brackets | Python | view | May 26 2026 |
| 20 | Vowel Count | Python | view | May 26 2026 |
| 21 | Array Counters | Python | view | May 26 2026 |
| 22 | Two Printers | Python | view | May 26 2026 |
| 23 | Bubble in Array | Python | view | May 26 2026 |
| 24 | Neumann's Random Generator | Python | view | May 26 2026 |
| 25 | Linear Congruential Generator | Python | view | May 26 2026 |
| 26 | Greatest Common Divisor | Python | view | May 26 2026 |
| 27 | Bubble Sort | Python | view | May 26 2026 |
| 28 | Body Mass Index | Python | view | May 26 2026 |
| 29 | Sort with Indexes | Python | view | May 26 2026 |
| 30 | Reverse String | Python | view | May 26 2026 |
| 31 | Rotate String | Python | view | May 26 2026 |
| 32 | Josephus Problem | Python | view | May 26 2026 |
| 33 | Parity Control | Python | view | May 26 2026 |
| 34 | Binary Search | Python | view | May 26 2026 |
| 35 | Savings Calculator | Python | view | May 27 2026 |
| 36 | Code Guesser | Python | view | May 27 2026 |
| 37 | Mortgage Calculator | Python | view | May 27 2026 |
| 38 | Quadratic Equation | Python | view | Jun 2 2026 |
| 39 | Share Price Volatility | Python | view | Jun 2 2026 |
| 40 | Paths in the Grid | Python | view | Jun 2 2026 |
| 41 | Median of Three | Python | view | May 26 2026 |
| 42 | Blackjack Counting | Python | view | May 27 2026 |
| 43 | Dice Rolling | Python | view | May 26 2026 |
| 44 | Double Dice Roll | Python | view | May 27 2026 |
| 45 | Cards Shuffling | Python | view | Jun 2 2026 |
| 46 | Tic-Tac-Toe | Python | view | Jun 2 2026 |
| 47 | Caesar Shift Cipher | Python | view | May 27 2026 |
| 48 | Collatz Sequence | Python | view | May 26 2026 |
| 49 | Rock Paper Scissors | Python | view | May 27 2026 |
| 50 | Palindromes | Python | view | May 27 2026 |
| 51 | Dungeons and Dragons Dice | Python | view | May 27 2026 |
| 52 | Pythagorean Theorem | Python | view | Jun 2 2026 |
| 53 | King and Queen | Python | view | Jun 2 2026 |
| 54 | Pythagorean Triples | Python | view | Jun 2 2026 |
| 55 | Matching Words | Python | view | Jun 2 2026 |
| 56 | Life is Simple | Python | view | Jun 2 2026 |
| 57 | Smoothing the Weather | Python | view | Jun 2 2026 |
| 58 | Card Names | Python | view | Jun 2 2026 |
| 59 | Bulls and Cows | Python | view | Jun 2 2026 |
| 60 | Sweet Harvest | Python | view | Jun 2 2026 |
| 61 | Prime Numbers Generation | Python | view | Jun 2 2026 |
| 62 | Prime Ranges | Python | view | Jun 2 2026 |
| 63 | Integer Factorization | Python | view | Jun 2 2026 |
| 64 | Maze Pathfinder | Python | view | Jun 2 2026 |
| 65 | Transitive Closure on Candy States | Python | view | Jun 2 2026 |
| 66 | Caesar Cipher Cracker | Python | view | Jun 2 2026 |
| 67 | Fibonacci Sequence | Python | view | Jun 2 2026 |
| 68 | Bicycle Race | Python | view | Jun 2 2026 |
| 69 | Fibonacci Divisibility | Python | view | Jun 2 2026 |
| 70 | Most Frequent Word | Python | view | Jun 2 2026 |
| 71 | Fibonacci Divisibility Advanced | Python | view | Jun 2 2026 |
| 72 | Funny Words Generator | Python | view | Jun 2 2026 |
| 73 | Hexagonal Grid | Python | view | Jun 2 2026 |
| 74 | Clock Hands | Python | view | Jun 2 2026 |
| 75 | Yacht or Dice Poker | Python | view | Jun 2 2026 |
| 76 | Pawn Move Validator | Python | view | Jun 2 2026 |
| 77 | Point to Segment Distance | Python | view | Jun 2 2026 |
| 78 | Bezier Curves | Python | view | Jun 2 2026 |
| 79 | Cycles Detection | Python | view | Jun 2 2026 |
| 80 | Duel Chances | Python | view | Jun 2 2026 |
| 81 | Bit Count | Python | view | Jun 2 2026 |
| 82 | Levenshtein Distance | Python | view | Jun 2 2026 |
| 83 | Graph Generator | Python | view | Jun 2 2026 |
| 84 | Dijkstra in the Network | Python | view | Jun 2 2026 |
| 85 | Rotation in 2D Space | Python | view | Jun 2 2026 |
| 86 | Brainfuck Interpreter | Python | view | Jun 2 2026 |
| 87 | Tree Builder | Python | view | Jun 2 2026 |
| 88 | Pitch and Notes | Python | view | Jun 2 2026 |
| 89 | Instrument Tuner | Python | view | Jun 2 2026 |
| 90 | Lexicographic Permutations | Python | view | Jun 2 2026 |
| 91 | Game of 2048 | Python | view | Jun 2 2026 |
| 92 | Binary Heap | Python | view | Jun 2 2026 |
| 93 | Starving Priority Queue | Python | view | Jun 2 2026 |
| 94 | Fool's Day 2014 | Python | view | Jun 2 2026 |
| 95 | Simple Linear Regression | Python | view | Jun 2 2026 |
| 96 | Snake Arcade | Python | view | Jun 2 2026 |
| 97 | Girls and Pigs | Python | view | Jun 2 2026 |
| 98 | Azimuth at Treasure Island | Python | view | Jun 2 2026 |
| 99 | Uphill Shooting | Python | view | Jun 2 2026 |
| 100 | Crossing the Road | Python | view | Jun 2 2026 |
| 101 | Gradient Calculation | Python | view | Jun 4 2026 |
| 102 | Travelling Salesman | Python | view | Jun 12 2026 |
| 103 | Easter Eggs | Python | view | Jun 4 2026 |
| 104 | Triangle Area | Python | view | Jun 4 2026 |
| 105 | Convex Polygon Area | Python | view | Jun 4 2026 |
| 106 | Random Search Optimization | Python | view | Jun 4 2026 |
| 107 | Knight's Tour | Python | view | Jun 4 2026 |
| 108 | Star Medals | Python | view | Jun 4 2026 |
| 109 | Lucky Tickets | Python | view | Jun 11 2026 |
| 110 | Lucky Tickets Advanced | Python | view | Jun 17 2026 |
| 111 | Necklace Count | Python | view | Jun 4 2026 |
| 113 | Ground Zero | Python | view | Jun 4 2026 |
| 114 | Tricky Printing | Python | view | Jun 9 2026 |
| 115 | Gradient Descent for SLE | Python | view | Jun 12 2026 |
| 116 | Summing Up | Python | view | Jun 4 2026 |
| 120 | Selection Sort | Python | view | Jun 9 2026 |
| 121 | Insertion Sort | Python | view | Jun 9 2026 |
| 122 | QuickSort | Python | view | Jun 9 2026 |
| 123 | Knapsack of Integers | Python | view | Jun 12 2026 |
| 124 | Knapsack Backtracking | Python | view | Jun 12 2026 |
| 125 | Bogosort | Python | view | Jun 12 2026 |
| 127 | Anagrams | Python | view | Jun 9 2026 |
| 128 | Combinations Counting | Python | view | Jun 9 2026 |
| 129 | Enumerating Combinations | Python | view | Jun 17 2026 |
| 130 | Combinations with Repetitions | Python | view | Jun 12 2026 |
| 131 | Four Pics One Word | Python | view | Jun 11 2026 |
| 132 | Stream Cipher Breaking | Python | view | Jun 12 2026 |
| 133 | Billiard Ball | Python | view | Jun 12 2026 |
| 134 | Flying Text Screensaver | Python | view | Jun 9 2026 |
| 135 | Variable Length Code | Python | view | Jun 9 2026 |
| 136 | Variable Length Code Unpack | Python | view | Jun 9 2026 |
| 137 | Shannon-Fano Coding | Python | view | Jun 12 2026 |
| 138 | Huffman Coding | Python | view | Jun 12 2026 |
| 139 | Beam Balance and Masses | Python | view | Jun 17 2026 |
| 140 | Proper Bracket Sequences | Python | view | Jun 17 2026 |
| 141 | Sliding Window Search | Python | view | Jun 16 2026 |
| 142 | LZ77 decompression | Python | view | Jun 12 2026 |
| 143 | Extended Euclidean Algorithm | Python | view | Jun 9 2026 |
| 144 | Modular Inverse | Python | view | Jun 12 2026 |
| 145 | Modular Exponentiation | Python | view | Jun 9 2026 |
| 146 | Color Cubes | Python | view | Jun 12 2026 |
| 148 | Public Key Cryptography Intro | Python | view | Jun 12 2026 |
| 149 | Prime Chains | Python | view | Jun 17 2026 |
| 150 | Introducing Regexps | RegExp | view | Jun 9 2026 |
| 150 | Introducing Regexps | Python | view | Jun 9 2026 |
| 151 | Word Ladders | Python | view | Jun 17 2026 |
| 152 | RSA Cryptography | Python | view | Jun 12 2026 |
| 153 | Fermat goes hacking RSA | Python | view | Jun 12 2026 |
| 154 | Breadth First Search | Python | view | Jun 9 2026 |
| 155 | Depth First Search | Python | view | Jun 9 2026 |
| 156 | Luhn Algorithm | Python | view | Jun 9 2026 |
| 157 | Emirp primE | Python | view | Jun 17 2026 |
| 158 | Hamming Codes | Python | view | Jun 12 2026 |
| 159 | Hard Life | Python | view | Jun 16 2026 |
| 161 | Topological Sorting | Python | view | Jun 9 2026 |
| 162 | Rubik's Cube | Python | view | Jun 16 2026 |
| 163 | Colliding Balls | Python | view | Jun 16 2026 |
| 164 | Page Rank | Python | view | Jun 12 2026 |
| 165 | Safe Landing | Python | view | Jun 12 2026 |
| 166 | Page Rank as Eigenvector | Python | view | Jun 12 2026 |
| 169 | Automated Landing | Python | view | Jun 16 2026 |
| 170 | Binary Search in Array | Python | view | Jun 9 2026 |
| 171 | Tree Height Measurement | Python | view | Jun 9 2026 |
| 172 | Cloud Altitude Measurement | Python | view | Jun 9 2026 |
| 173 | Chords of Music | Python | view | Jun 17 2026 |
| 174 | Calculation of Pi | Python | view | Jun 12 2026 |
| 175 | Algae Robot | Python | view | Jun 17 2026 |
| 176 | Say 100 | Python | view | Jun 9 2026 |
| 179 | Look and Say binary | Python | view | Jun 17 2026 |
| 180 | Simple Game of Sticks | Python | view | Jun 17 2026 |
| 181 | Reverse Polish Notation | Python | view | Jun 9 2026 |
| 182 | Frodo and Black Riders | Python | view | Jun 16 2026 |
| 184 | Matches Picking | Python | view | Jun 9 2026 |
| 185 | Simple 3D Scene | Python | view | Jun 16 2026 |
| 186 | Simple 3D Scene (cont) | Python | view | Jun 16 2026 |
| 187 | Static Web Page | Python | view | Jun 9 2026 |
| 188 | Basics of HTML | Python | view | Jun 9 2026 |
| 189 | Dynamic Web Page | Python | view | Jun 9 2026 |
| 190 | Query String Parameters | Python | view | Jun 9 2026 |
| 191 | Spaceship Weight Fraud | Python | view | Jun 9 2026 |
| 192 | Gangster Battles | Python | view | Jun 17 2026 |
| 193 | Maximum Flow | Python | view | Jun 12 2026 |
| 194 | Convex Hull and Farmers | Python | view | Jun 12 2026 |
| 195 | Mul Two | Asm4004 | view | Jun 9 2026 |
| 201 | Point in Polygon | Python | view | Jun 12 2026 |
| 202 | Dancing Pairs | Python | view | Jun 12 2026 |
| 203 | Tic-Tac-Toe Minimax Algorithm | Python | view | Jun 12 2026 |
| 204 | Wandering Star | Python | view | Jun 17 2026 |
| 205 | Clustering the Stars | Python | view | Jun 12 2026 |
| 206 | Base-32 Encoding | Python | view | Jun 9 2026 |
| 207 | Suffix Array | Python | view | Jun 9 2026 |
| 208 | Neighborhood of a String | Python | view | Jun 12 2026 |
| 209 | Suffix Array Advanced | Python | view | Jun 17 2026 |
| 210 | Ticket Puzzle | Python | view | Jun 17 2026 |
| 211 | Information Entropy | Python | view | Jun 9 2026 |
| 214 | Sick Travellers | Python | view | Jun 16 2026 |
| 216 | Cracking Linear Congruential Generator | Python | view | Jun 12 2026 |
| 217 | Personality Swap | Python | view | Jun 18 2026 |
| 218 | Rain Must Fall | Python | view | Jun 17 2026 |
| 219 | Neural Network Calculation | Python | view | Jun 12 2026 |
| 220 | Neural Network Training | Python | view | Jun 12 2026 |
| 222 | Easter Eggs Advanced | Python | view | Jun 18 2026 |
| 229 | Burrows-Wheeler Transform | Python | view | Jun 12 2026 |
| 230 | Move-To-Front Transform | Python | view | Jun 12 2026 |
| 233 | Language Study | Python | view | Jun 16 2026 |
| 234 | Train Merge | Python | view | Jun 16 2026 |
| 236 | Is the Earth Flat | Python | view | Jun 15 2026 |
| 241 | Village Ways | Python | view | Jun 17 2026 |
| 243 | Grille Encryption | Python | view | Jun 16 2026 |
| 247 | Towers of Hanoi | Python | view | Jun 17 2026 |
| 253 | Beautiful Line Chart | Python | view | Jun 11 2026 |
| 255 | LCM of a range | Python | view | Jun 17 2026 |
| 256 | Rook Jump Maze | Python | view | Jun 12 2026 |
| 258 | Text Justification | Python | view | Jun 16 2026 |
| 259 | Easter Bunnies | Python | view | Jun 17 2026 |
| 260 | Low Cost Road Network | Python | view | Jun 12 2026 |
| 261 | Easter Bunnies 2D | Python | view | Jun 18 2026 |
| 266 | Pancake Sorting | Python | view | Jun 18 2026 |
| 268 | Logic Transformation | Python | view | Jun 16 2026 |
| 269 | Fibonacci coding | Python | view | Jun 11 2026 |
| 270 | Hexlife | Python | view | Jun 16 2026 |
| 271 | A Knight some Trolls and a Princess | Python | view | Jun 18 2026 |
| 273 | Logic Glitches | Python | view | Jun 15 2026 |
| 274 | Two Buckets | Python | view | Jun 17 2026 |
| 275 | Three Buckets | Python | view | Jun 16 2026 |
| 277 | The Adventure of Morse Code | Python | view | Jun 11 2026 |
| 281 | Basic Tokenizer | Python | view | Jun 11 2026 |
| 287 | Palindrome Frog | Python | view | Jun 18 2026 |
| 291 | Squirrels vs. Acorns | Python | view | Jun 11 2026 |
| 292 | Factorial Trailing Zeroes | Python | view | Jun 17 2026 |
| 293 | Sums of Triplets | Python | view | Jun 16 2026 |
| 295 | Vigenere Cipher Cracker | Python | view | Jun 18 2026 |
| 299 | Tree Visualizer | Python | view | Jun 16 2026 |
| 301 | Skyscraper Price | Python | view | Jun 9 2026 |
| 302 | Sound-Controlled Robot | Python | view | Jun 12 2026 |
| 307 | The Problem of Too Many Clues | Python | view | Jun 17 2026 |
| 316 | Apogee | Python | view | Jun 9 2026 |
| 323 | Next Palindrome | Python | view | Jun 11 2026 |
| 334 | Find all of the SETs | Python | view | Jun 16 2026 |
| 335 | Venus Visible | Python | view | Jun 11 2026 |
| 336 | Currency Arbitrage | Python | view | Jun 12 2026 |
| 337 | Introducing Zeckendorf | Python | view | Jun 11 2026 |
| 338 | Throwing Easter Eggs | Python | view | Jun 18 2026 |
| 339 | Parking Lot | Python | view | Jun 18 2026 |
| 340 | Zeckendorf Lite | Python | view | Jun 18 2026 |
| 341 | Zeckendorf Advanced | Python | view | Jun 18 2026 |
| 342 | Adaptive Arithmetic Coding | Python | view | Jun 12 2026 |
| 343 | Village of Ticks | Python | view | Jun 15 2026 |
| 344 | Throwing Easter Eggs Part 2 | Python | view | Jun 12 2026 |
| 345 | Elliptic Curves Basics | Python | view | Jun 12 2026 |
| 346 | Long Decimal Fractions | Python | view | Jun 18 2026 |
| 347 | Unwanted Multiples | Python | view | Jun 18 2026 |
| 349 | Burrows | Python | view | Jun 12 2026 |
| 351 | Nicomachus | Python | view | Jun 12 2026 |
| 354 | Too Many Divisors | Python | view | Jun 18 2026 |
| 357 | Ulam's Prime Spiral | Python | view | Jun 16 2026 |
| 359 | Find 3 Numbers | Python | view | Jun 17 2026 |
| 360 | Whisky Blending | Python | view | Jun 11 2026 |
| 361 | Rogue Mazes | Python | view | Jun 16 2026 |
| 362 | Euclid, Manhattan and Chebyshev | Python | view | Jun 16 2026 |
| 364 | Arthur Engel's Randomizer | Python | view | Jun 11 2026 |
| 366 | Image Cutting | Python | view | Jun 11 2026 |
| 367 | Roguelike 1d | Python | view | Jun 16 2026 |
| 368 | Number Base Palindrome | Python | view | Jun 11 2026 |
| 369 | Flappy Bird | Python | view | Jun 15 2026 |
| 371 | Pages to Print | Python | view | Jun 11 2026 |
| 372 | String Minimization | Python | view | Jun 17 2026 |
| 374 | Longest Common Subsequence | Python | view | Jun 12 2026 |
| 376 | Cartesian Tree Visualization | Python | view | Jun 12 2026 |
| 377 | Sum of Digits Divisibility | Python | view | Jun 9 2026 |
| 379 | Dice with Infinity Sides | Python | view | Jun 17 2026 |
| 380 | Treap Study | Python | view | Jun 12 2026 |
| 381 | Finding Squares | Python | view | Jun 17 2026 |
| 382 | Die Throw Sequences | Python | view | Jun 18 2026 |
| 383 | E2C2S - try harder! | Python | view | Jun 18 2026 |
| 384 | Equal Hamming Distance | Python | view | Jun 17 2026 |
| 385 | Number of steps in Euclidean Algorithm | Python | view | Jun 9 2026 |
| 388 | Fibonacci Guessing Game | Python | view | Jun 9 2026 |
| 389 | Binary Split Guessing Game | Python | view | Jun 18 2026 |
| 390 | Card Pairing Solitaire | Python | view | Jun 16 2026 |
| 392 | Fixing an Anagram | Python | view | Jun 11 2026 |
| 393 | Urban Planning | Python | view | Jun 18 2026 |
| 395 | Growth of Micro-Organisms | Python | view | Jun 18 2026 |
| 398 | Collecting Diamonds | Python | view | Jun 18 2026 |
| 399 | Methane Identification | Python | view | Jun 12 2026 |
| 401 | Methane Rotation | Python | view | Jun 11 2026 |
| 402 | Game of Stones | Python | view | Jun 18 2026 |
| 403 | Hi-Lo dice game | Python | view | Jun 11 2026 |
| 404 | Methane Normalization | Python | view | Jun 15 2026 |
| 405 | Three Friendly Knights | Python | view | Jun 18 2026 |
| 406 | Wormholes of Cygnus | Python | view | Jun 11 2026 |
| 407 | River Labyrinth | Python | view | Jun 16 2026 |
| 409 | Election Fever | Python | view | Jun 18 2026 |
| 411 | Elo Ratings | Python | view | Jun 16 2026 |
| 412 | Json Fix | Python | view | Jun 16 2026 |
| 413 | Tree Painting | Python | view | Jun 18 2026 |
| 414 | MIDI Variable Length Numbers | Python | view | Jun 11 2026 |
| 415 | Smallest Message | Python | view | Jun 18 2026 |
| 417 | Unfortunate Bubble Sort | Python | view | Jun 18 2026 |
| 418 | Expected Number of Random Moves | Python | view | Jun 11 2026 |
| 419 | Special Digits | Python | view | Jun 18 2026 |
| 420 | Life on a String | Python | view | Jun 17 2026 |
| 421 | Princess and Tiger | Python | view | Jun 17 2026 |
| 423 | Russian Dolls | Python | view | Jun 17 2026 |
| 425 | Explosive Breeding | Python | view | Jun 9 2026 |
| 426 | Weighted Sum of Digits 2 | Python | view | Jun 17 2026 |
| 427 | Cheapest Bus Tickets | Python | view | Jun 17 2026 |
| 428 | Broken Keyboard | Python | view | Jun 9 2026 |
| 429 | Moving Average in Time | Python | view | Jun 12 2026 |
| 433 | A Crime on Logic Island | Python | view | Jun 11 2026 |
| 434 | A Crime on Logic Island Advanced | Python | view | Jun 17 2026 |
| 437 | Elections and Happiness | Python | view | Jun 11 2026 |
| 439 | Power Sum of Digits | Python | view | Jun 17 2026 |
| 442 | Chomp | Python | view | Jun 16 2026 |
| 444 | White Rectangle | Python | view | Jun 12 2026 |
| 445 | Formula 1 | Python | view | Jun 16 2026 |
| 449 | Space Pirates | Python | view | Jun 11 2026 |
| 450 | Bead Games | Python | view | Jun 17 2026 |
| 451 | Maximize Toy Production | Python | view | Jun 18 2026 |
| 457 | Railroad and Hamilton | Python | view | Jun 16 2026 |
| 458 | Mountain Panorama | Python | view | Jun 17 2026 |
| 459 | Number String Multiples of Thirteen | Python | view | Jun 17 2026 |
| 460 | Carlsdale Caverns | Python | view | Jun 16 2026 |
| 461 | Lucky 7 | Python | view | Jun 9 2026 |
| 463 | Crossing Towns | Python | view | Jun 17 2026 |
| 464 | Graph to Loops Decomposition | Python | view | Jun 16 2026 |
| 467 | Permutation Generator | Python | view | Jun 12 2026 |
| 469 | Game of Generals | Python | view | Jun 16 2026 |
| 472 | Unreachable Amounts | Python | view | Jun 17 2026 |
| 476 | Prime Vowel Count | Python | view | Jun 9 2026 |
| 480 | Coin Payments | Python | view | Jun 9 2026 |
| 485 | Magic 3 | Python | view | Jun 9 2026 |
| 487 | Reduce and Equalise | Python | view | Jun 9 2026 |
| 492 | Fastest Clearance | Python | view | Jun 9 2026 |
| 494 | Holiday Travel | Python | view | Jun 9 2026 |
| 495 | Counting Arithmetic Progressions | Python | view | Jun 9 2026 |
| 496 | Minimum Journey Cost | Python | view | Jun 11 2026 |