Collatz in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq 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 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 881st jared-hughes 847 100 63ms 20 Jul 2022 881st ZakkkkAttackkkk 🇵🇭 847 100 63ms 10 Aug 2022 881st Walter225 847 100 62ms 25 Jul 2023 884th MeWhenI 🇻🇦 846 26 159ms 25 Aug 2022 884th AlephSquirrel 846 26 155ms 6 Jan 2023 884th ovs-code 🇩🇪 846 26 367ms 5 May 2024 884th saito-ta 🇯🇵 846 26 154ms 12 Dec 2024 888th Natanaelel 🇸🇪 846 57 453ms 17 Jan 2024 888th Kacarott 🇦🇺 846 57 461ms 10 Sep 2024 888th albanian-laundromat 🇺🇸 846 57 463ms 7 Oct 2025 891st randolchance 846 63 12ms 8 Jan 2023 891st CatsAreFluffy 846 63 14ms 18 Feb 2023 891st amiralitaheri 846 63 13ms 23 Feb 2023 891st RuyiLi 846 63 13ms 1 Apr 2023 891st TaserTheFox 🇺🇸 846 63 15ms 25 May 2023 891st pfysches-boop 846 63 12ms 6 Aug 2023 891st mhgockel 846 63 14ms 19 Aug 2023 891st NickTheEASDude 🇺🇸 846 63 11ms 18 Jan 2024 891st 823126 846 63 15ms 14 Nov 2024 891st Palladium02 846 63 11ms 12 May 2025 891st 4very 846 63 10ms 10 Jun 2025 891st Ultra814 846 63 13ms 21 Aug 2025 903rd retrohun 846 64 4ms 6 Nov 2022 903rd Re-Adventures 🇮🇳 846 64 4ms 7 Nov 2022 903rd stellartux 846 64 4ms 26 Dec 2023 903rd bac0id 846 64 4ms 29 Jun 2024 903rd snoozingnewt 🇨🇦 846 64 4ms 1 Sep 2024 903rd albanian-laundromat 🇺🇸 846 64 4ms 22 Sep 2025 909th NewDefectus 🇮🇱 846 73 2ms 6 May 2022 909th inventshah 846 73 2ms 12 Jun 2022 909th Natanaelel 🇸🇪 846 73 2ms 15 Jun 2022 909th LorenzoDeGaspari 846 73 2ms 27 May 2024 909th Bpc-CPU 846 73 2ms 12 Jul 2025 909th AZTECCO 846 73 2ms 16 Sep 2025 909th CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 909th prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 909th albanian-laundromat 🇺🇸 846 73 3ms 20 Jan 2026 909th madex 🇩🇪 846 73 2ms 20 Mar 2026 919th Shanethegamer 🇺🇸 846 98 129ms 26 Oct 2022 919th emgordon154 846 98 128ms 18 Feb 2025 921st janAkali 🇷🇺 845 77 131ms 12 Feb 2025 922nd MeWhenI 🇻🇦 844 71 110ms 13 Dec 2022 923rd bschorno 844 92 410ms 12 Oct 2022 923rd ChrisTheisen 844 92 423ms 14 Dec 2022 923rd kellantech 844 92 395ms 4 Jul 2023 923rd Mezzofloat 844 92 417ms 26 Aug 2023 923rd Maximizer02 844 92 428ms 1 Oct 2023 923rd madeforlosers 844 92 366ms 21 Nov 2024 923rd ChromaChroma 844 92 398ms 7 Oct 2025 923rd snoozingnewt 🇨🇦 844 92 433ms 8 Oct 2025 931st emplv 🇱🇻 844 124 25ms 31 Oct 2022 931st emgordon154 844 124 27ms 26 days ago 933rd DialFrost 🇸🇬 843 66 85ms 7 Apr 2025 933rd KasperKivimaeki 🇫🇮 843 66 8ms 22 Dec 2025 935th Natanaelel 🇸🇪 843 87 1,558ms 15 Jun 2022 936th SirBogman 🇺🇸 843 89 38ms 4 May 2022 937th GolfingSuccess 🇬🇷 843 109 13ms 19 Mar 2026 938th MeWhenI 🇻🇦 843 162 1,710ms 5 days ago 939th krcs 🇵🇱 842 53 319ms 9 May 2022 939th ryanlanegit 842 53 311ms 19 Jun 2022 939th sisyphus-ppcg 🇦🇺 842 53 493ms 15 Aug 2022 942nd error256 842 81 68ms 13 Sep 2024 943rd CLOStrophobic 🇮🇹 842 89 42ms 14 Feb 2025 944th kmathis22 842 100 42ms 13 Nov 2025 945th sean-niemann 🇺🇸 841 76 141ms 8 Oct 2024 946th frankgraziano 840 66 4ms 20 Apr 2025 947th raszpi 🇭🇺 840 77 117ms 1 Sep 2023 948th beardotpdf 840 99 422ms 12 Dec 2025 949th DialFrost 🇸🇬 839 56 1,181ms 1 Sep 2025 949th GolfingSuccess 🇬🇷 839 56 1,114ms 17 Feb 2026 951st Yewzir 🇧🇪 839 69 126ms 24 Dec 2024 951st albanian-laundromat 🇺🇸 839 69 106ms 27 Feb 2026 953rd eshilo-draper 839 75 96ms 6 Sep 2022 953rd kmathis22 839 75 90ms 5 Sep 2025 955th steffan-polygolf 839 81 9ms 23 Feb 2023 955th FranklinJiaChen 839 81 9ms 23 Feb 2026 957th Andriamanitra 🇫🇮 839 83 12ms 17 Apr 2023 957th Natanaelel 🇸🇪 839 83 12ms 8 Jul 2023 959th dokutan 839 88 39ms 9 Jun 2024 960th Steffan153 🇫🇮 839 97 30ms 18 Jan 2023 First Prev 881–960 of 3,748 Next Last