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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript 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 ><> 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 ALGOL 68 APL ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 871st 4very 846 63 11ms 10 Jun 2025 871st Ultra814 846 63 10ms 21 Aug 2025 883rd NewDefectus 🇮🇱 846 73 3ms 6 May 2022 883rd inventshah 846 73 2ms 12 Jun 2022 883rd Natanaelel 🇸🇪 846 73 2ms 15 Jun 2022 883rd Herbert00709 🇵🇱 846 73 2ms 22 Dec 2023 883rd LorenzoDeGaspari 846 73 2ms 27 May 2024 883rd Bpc-CPU 846 73 2ms 12 Jul 2025 883rd AZTECCO 846 73 2ms 16 Sep 2025 883rd CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 883rd prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 883rd albanian-laundromat 846 73 3ms 20 Jan 2026 893rd Natanaelel 🇸🇪 845 57 459ms 17 Jan 2024 893rd Kacarott 🇦🇺 845 57 402ms 10 Sep 2024 893rd albanian-laundromat 845 57 526ms 7 Oct 2025 896th retrohun 845 64 5ms 6 Nov 2022 896th Re-Adventures 🇮🇳 845 64 5ms 7 Nov 2022 896th stellartux 845 64 5ms 26 Dec 2023 896th bac0id 845 64 5ms 29 Jun 2024 896th snoozingnewt 🇨🇦 845 64 5ms 1 Sep 2024 896th albanian-laundromat 845 64 5ms 22 Sep 2025 902nd Shanethegamer 🇺🇸 845 98 121ms 26 Oct 2022 902nd emgordon154 845 98 121ms 18 Feb 2025 904th janAkali 🇷🇺 844 77 123ms 12 Feb 2025 905th bschorno 844 92 375ms 12 Oct 2022 905th ChrisTheisen 844 92 371ms 14 Dec 2022 905th kellantech 844 92 408ms 4 Jul 2023 905th Mezzofloat 844 92 402ms 26 Aug 2023 905th Maximizer02 844 92 408ms 1 Oct 2023 905th madeforlosers 844 92 407ms 21 Nov 2024 905th ChromaChroma 844 92 407ms 7 Oct 2025 905th snoozingnewt 🇨🇦 844 92 422ms 8 Oct 2025 913th DialFrost 🇸🇬 843 66 93ms 7 Apr 2025 913th KasperKivimaeki 🇫🇮 843 66 6ms 22 Dec 2025 915th krcs 🇵🇱 842 53 280ms 9 May 2022 915th ryanlanegit 842 53 312ms 19 Jun 2022 915th sisyphus-ppcg 🇦🇺 842 53 453ms 15 Aug 2022 918th MeWhenI 🇻🇦 842 71 106ms 13 Dec 2022 919th SirBogman 🇺🇸 842 89 38ms 4 May 2022 920th error256 841 81 68ms 13 Sep 2024 921st CLOStrophobic 🇮🇹 841 89 42ms 14 Feb 2025 922nd kmathis22 841 100 31ms 13 Nov 2025 923rd emplv 🇱🇻 841 124 25ms 31 Oct 2022 924th raszpi 🇭🇺 840 77 117ms 1 Sep 2023 925th MeWhenI 🇻🇦 840 164 1,639ms 7 Nov 2025 926th frankgraziano 839 66 4ms 20 Apr 2025 927th eshilo-draper 839 75 83ms 6 Sep 2022 927th kmathis22 839 75 79ms 5 Sep 2025 929th sean-niemann 🇺🇸 839 76 97ms 8 Oct 2024 930th beardotpdf 839 99 422ms 12 Dec 2025 931st Codsilla 🇨🇦 838 51 263ms 1 Jul 2022 932nd Andriamanitra 🇫🇮 838 83 12ms 17 Apr 2023 932nd Natanaelel 🇸🇪 838 83 12ms 8 Jul 2023 934th Steffan153 🇫🇮 838 97 31ms 18 Jan 2023 935th CatsAreFluffy 838 101 53ms 18 Feb 2023 935th annaproxy 838 101 57ms 9 May 2023 935th wojtekmal 838 101 56ms 15 Nov 2023 935th HumanoidCPU 838 101 58ms 6 May 2024 935th eMGeeneer 838 101 398ms 27 Jun 2024 935th bac0id 838 101 57ms 29 Jun 2024 935th michaelmoynihan 838 101 396ms 3 Sep 2025 935th snoozingnewt 🇨🇦 838 101 397ms 6 Oct 2025 943rd Shanethegamer 🇺🇸 837 58 1,035ms 17 Sep 2025 944th steffan-polygolf 837 81 10ms 23 Feb 2023 945th ovs-code 🇩🇪 837 85 16ms 11 Dec 2023 946th dokutan 837 88 39ms 9 Jun 2024 947th scpchicken 🇵🇼 836 55 10ms 4 May 2022 947th SirBogman 🇺🇸 836 55 6ms 5 May 2022 947th Shanethegamer 🇺🇸 836 55 6ms 19 May 2023 947th DialFrost 🇸🇬 836 55 10ms 14 Feb 2025 951st SirBogman 🇺🇸 835 36 9ms 5 May 2022 951st Natanaelel 🇸🇪 835 36 87ms 15 Jun 2022 951st Steffan153 🇫🇮 835 36 91ms 18 Jan 2023 951st codereport 🇨🇦 835 36 9ms 1 Jun 2024 951st GolfinK 835 36 8ms 21 Nov 2024 951st lifthrasiir 🇰🇷 835 36 9ms 1 Dec 2024 951st GolfingSuccess 🇬🇷 835 36 11ms 20 Mar 2025 958th ChiefChippy2 835 56 40ms 4 May 2022 958th aksyristos 835 56 39ms 29 Jan 2023 958th anter69 🇭🇺 835 56 38ms 12 Feb 2024 First Prev 881–960 of 3,560 Next Last