Collatz in Python in chars. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA 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Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 593rd TheAtrossian 640 89 19ms 5 Jan 2025 593rd KimJua41 640 89 19ms 4 May 2025 593rd Upload-and-View 🇺🇦 640 89 27ms 20 Aug 2025 604th StoverGitHub 633 90 29ms 16 Jun 2022 604th jamespeilunli 633 90 23ms 4 Jul 2022 604th TrentGlimp 633 90 18ms 3 Sep 2022 604th Ugoran 633 90 20ms 19 Nov 2022 604th PATTRIM 633 90 16ms 5 Jan 2023 604th charliegaming 633 90 19ms 3 Oct 2023 604th lhulinsky 633 90 18ms 22 Oct 2024 604th bthalheim 633 90 21ms 6 Dec 2024 604th SinArieh 633 90 24ms 4 May 2025 604th islptng 633 90 22ms 7 Jul 2025 604th Mr-McChicken 633 90 17ms 4 Oct 2025 615th AbelPelser 626 91 27ms 3 Jul 2022 615th Seis 626 91 20ms 9 Dec 2022 615th r-i-c-e 626 91 18ms 9 Jul 2023 615th joshcors 626 91 19ms 30 Jun 2024 615th resoNathan 626 91 16ms 9 Jul 2024 615th jameswmccarty 626 91 21ms 24 Sep 2024 615th hamilton-bonds 626 91 16ms 12 Nov 2024 615th Wonamm 626 91 26ms 14 Feb 2025 623rd TimLeffke 620 92 26ms 17 Aug 2022 623rd Rythoka 620 92 15ms 17 Oct 2022 623rd UriyaBA 620 92 16ms 19 Mar 2023 623rd VladislavGitter 🇪🇸 620 92 20ms 14 Nov 2023 623rd ridingqwerty 🇺🇸 620 92 15ms 22 Dec 2023 623rd Thonoton 620 92 19ms 1 Feb 2024 623rd OCNeve 620 92 18ms 17 Jun 2024 623rd themoonisacheese 620 92 22ms 25 Feb 2025 623rd BabySharkHi 620 92 20ms 22 Apr 2025 623rd arjunarya1 620 92 16ms 28 Aug 2025 623rd TJK-S 620 92 19ms 10 Oct 2025 634th Bananapants22 613 93 26ms 4 Sep 2022 634th jaxmattfair 🇺🇸 613 93 18ms 10 Jan 2023 634th fenix-bear 613 93 19ms 18 Nov 2023 634th epic-programmer-guy 613 93 22ms 22 Dec 2023 634th brimstonetrader 613 93 22ms 18 Nov 2024 639th atazzam 🇺🇸 606 94 17ms 18 May 2022 639th rohangpta 606 94 16ms 8 Aug 2022 639th shinylego 606 94 20ms 14 Sep 2022 639th sgaltair 606 94 20ms 4 Nov 2022 639th TotoAJ 606 94 17ms 15 Dec 2023 639th Gusic06 606 94 18ms 6 May 2024 639th kyleyarwood 606 94 20ms 6 Oct 2024 639th jj0786-cell 606 94 18ms 1 Apr 2025 639th griffinschreiber 606 94 19ms 1 Apr 2025 648th felixcroc 600 95 19ms 30 Mar 2023 648th Pyro569 600 95 18ms 4 Jul 2023 648th rm-rf-innocence 600 95 19ms 19 Dec 2023 648th Bit125 600 95 18ms 30 Jan 2024 648th aalec 600 95 24ms 25 Apr 2024 648th strogor 600 95 19ms 13 Jun 2025 648th cthierfelder 🇲🇨 600 95 18ms 17 Jul 2025 648th ThomasDelepine 600 95 21ms 17 days ago 656th karhuthebear 594 96 23ms 9 May 2022 656th qwjhvbxi 594 96 20ms 6 Feb 2024 656th alfonsoalves 594 96 18ms 21 Jul 2024 656th jeff-re 594 96 14ms 1 Apr 2025 660th a-penton 588 97 19ms 22 Sep 2022 660th jrbud 588 97 18ms 6 Jan 2024 660th befoster 588 97 21ms 22 Feb 2024 660th joshua-el-samalouti 🇩🇪 588 97 18ms 26 May 2024 660th luca1339 588 97 18ms 10 Jun 2024 665th lukemalek 582 98 14ms 10 Oct 2022 665th UltimateGuy0987 582 98 18ms 14 Oct 2022 665th TheLazySquid 582 98 20ms 20 Dec 2022 665th StronkCheese 🇺🇸 582 98 28ms 13 Mar 2023 665th Anthony-Williams-06 582 98 27ms 17 Oct 2023 665th NoneTheFewer 582 98 21ms 17 May 2024 665th abcdhhhh 582 98 14ms 27 Aug 2024 665th OSYCh314 🇦🇺 582 98 23ms 16 Nov 2024 665th cole-wilson 582 98 18ms 9 Dec 2024 665th Akilles1 582 98 18ms 15 May 2025 665th Hyperoplex145 582 98 20ms 4 days ago First Prev 601–675 of 801 Next Last