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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 Nim 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 Nim 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 892nd Palladium02 846 63 11ms 12 May 2025 892nd 4very 846 63 10ms 10 Jun 2025 892nd Ultra814 846 63 13ms 21 Aug 2025 904th retrohun 846 64 4ms 6 Nov 2022 904th Re-Adventures 🇮🇳 846 64 4ms 7 Nov 2022 904th stellartux 846 64 4ms 26 Dec 2023 904th bac0id 846 64 4ms 29 Jun 2024 904th snoozingnewt 🇨🇦 846 64 4ms 1 Sep 2024 904th albanian-laundromat 🇺🇸 846 64 4ms 22 Sep 2025 910th NewDefectus 🇮🇱 846 73 2ms 6 May 2022 910th inventshah 846 73 2ms 12 Jun 2022 910th Natanaelel 🇸🇪 846 73 2ms 15 Jun 2022 910th LorenzoDeGaspari 846 73 2ms 27 May 2024 910th Bpc-CPU 846 73 2ms 12 Jul 2025 910th AZTECCO 846 73 2ms 16 Sep 2025 910th CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 910th prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 910th albanian-laundromat 🇺🇸 846 73 3ms 20 Jan 2026 910th madex 🇩🇪 846 73 2ms 20 Mar 2026 920th Shanethegamer 🇺🇸 846 98 129ms 26 Oct 2022 920th emgordon154 846 98 128ms 18 Feb 2025 922nd janAkali 🇷🇺 845 77 137ms 12 Feb 2025 923rd MeWhenI 🇻🇦 844 71 111ms 13 Dec 2022 924th bschorno 844 92 410ms 12 Oct 2022 924th ChrisTheisen 844 92 423ms 14 Dec 2022 924th kellantech 844 92 395ms 4 Jul 2023 924th Mezzofloat 844 92 417ms 26 Aug 2023 924th Maximizer02 844 92 428ms 1 Oct 2023 924th madeforlosers 844 92 366ms 21 Nov 2024 924th ChromaChroma 844 92 398ms 7 Oct 2025 924th snoozingnewt 🇨🇦 844 92 433ms 8 Oct 2025 932nd emplv 🇱🇻 844 124 25ms 31 Oct 2022 932nd emgordon154 844 124 27ms 29 Mar 2026 934th DialFrost 🇸🇬 843 66 85ms 7 Apr 2025 934th KasperKivimaeki 🇫🇮 843 66 8ms 22 Dec 2025 936th Natanaelel 🇸🇪 843 87 1,558ms 15 Jun 2022 937th SirBogman 🇺🇸 843 89 38ms 4 May 2022 938th GolfingSuccess 🇬🇷 843 109 13ms 19 Mar 2026 939th MeWhenI 🇻🇦 843 162 1,710ms 7 days ago 940th krcs 🇵🇱 842 53 319ms 9 May 2022 940th ryanlanegit 842 53 311ms 19 Jun 2022 940th sisyphus-ppcg 🇦🇺 842 53 493ms 15 Aug 2022 943rd error256 842 81 68ms 13 Sep 2024 944th CLOStrophobic 🇮🇹 842 89 42ms 14 Feb 2025 945th kmathis22 842 100 42ms 13 Nov 2025 946th Yewzir 🇧🇪 841 69 126ms 24 Dec 2024 946th albanian-laundromat 🇺🇸 841 69 106ms 27 Feb 2026 948th sean-niemann 🇺🇸 841 76 141ms 8 Oct 2024 949th frankgraziano 840 66 4ms 20 Apr 2025 950th raszpi 🇭🇺 840 77 117ms 1 Sep 2023 951st beardotpdf 840 99 512ms 12 Dec 2025 952nd DialFrost 🇸🇬 839 56 890ms 1 Sep 2025 952nd GolfingSuccess 🇬🇷 839 56 831ms 17 Feb 2026 954th eshilo-draper 839 75 96ms 6 Sep 2022 954th kmathis22 839 75 90ms 5 Sep 2025 956th steffan-polygolf 839 81 9ms 23 Feb 2023 956th FranklinJiaChen 839 81 9ms 23 Feb 2026 958th Andriamanitra 🇫🇮 839 83 12ms 17 Apr 2023 958th Natanaelel 🇸🇪 839 83 12ms 8 Jul 2023 960th dokutan 839 88 39ms 9 Jun 2024 961st Steffan153 🇫🇮 839 97 30ms 18 Jan 2023 962nd CatsAreFluffy 839 101 62ms 18 Feb 2023 962nd annaproxy 839 101 62ms 9 May 2023 962nd wojtekmal 839 101 63ms 15 Nov 2023 962nd HumanoidCPU 839 101 64ms 6 May 2024 962nd eMGeeneer 839 101 416ms 27 Jun 2024 962nd bac0id 839 101 63ms 29 Jun 2024 962nd michaelmoynihan 839 101 433ms 3 Sep 2025 962nd snoozingnewt 🇨🇦 839 101 452ms 6 Oct 2025 970th Codsilla 🇨🇦 838 51 241ms 1 Jul 2022 971st DialFrost 🇸🇬 838 83 17ms 1 Jan 2026 972nd scpchicken 🇵🇼 837 55 10ms 4 May 2022 972nd SirBogman 🇺🇸 837 55 6ms 5 May 2022 972nd Shanethegamer 🇺🇸 837 55 6ms 19 May 2023 972nd DialFrost 🇸🇬 837 55 11ms 14 Feb 2025 976th nwellnhof 🇩🇪 836 117 1,730ms 16 Nov 2022 977th SirBogman 🇺🇸 835 36 9ms 5 May 2022 977th Natanaelel 🇸🇪 835 36 87ms 15 Jun 2022 977th Steffan153 🇫🇮 835 36 91ms 18 Jan 2023 977th codereport 🇨🇦 835 36 9ms 1 Jun 2024 977th GolfinK 835 36 8ms 21 Nov 2024 977th lifthrasiir 🇰🇷 835 36 9ms 1 Dec 2024 977th GolfingSuccess 🇬🇷 835 36 11ms 20 Mar 2025 977th scpchicken 🇵🇼 835 36 8ms 10 Mar 2026 985th moustave 835 67 23ms 7 Nov 2024 986th inverseLorentz 🇦🇺 835 69 154ms 3 Jun 2024 986th CLOStrophobic 🇮🇹 835 69 170ms 28 May 2025 988th Alex-x90 🇺🇸 835 74 2ms 4 Dec 2022 988th undersquire 835 74 2ms 24 Jun 2023 988th rdmsr 835 74 2ms 24 Jun 2023 988th Bmrl7 835 74 2ms 9 Jul 2023 988th Vinterion 835 74 2ms 6 Nov 2023 988th namelessiw 835 74 2ms 28 Dec 2023 988th Jonatan6 🇩🇰 835 74 2ms 15 Mar 2024 988th Mandrzejy 🇵🇱 835 74 2ms 12 Apr 2024 988th kaurakeksi 🇫🇮 835 74 2ms 29 Dec 2024 997th p-vf 🇨🇭 835 93 406ms 24 Jun 2022 997th Smetalo 835 93 418ms 25 Aug 2022 997th malworthy 835 93 381ms 19 Aug 2024 1,000th Natanaelel 🇸🇪 834 39 131ms 10 Feb 2025 First Prev 901–1,000 of 3,753 Next Last