Collatz in all languages 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 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 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 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 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 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 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 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 901st Andriamanitra 🇫🇮 838 83 12ms 17 Apr 2023 901st Natanaelel 🇸🇪 838 83 11ms 8 Jul 2023 903rd emplv 🇱🇻 838 124 27ms 31 Oct 2022 904th MeWhenI 🇻🇦 838 164 1,609ms 14 days ago 905th ovs-code 🇩🇪 837 85 17ms 11 Dec 2023 906th Steffan153 🇫🇮 837 97 33ms 18 Jan 2023 907th CatsAreFluffy 837 101 75ms 18 Feb 2023 907th annaproxy 837 101 54ms 9 May 2023 907th wojtekmal 837 101 53ms 15 Nov 2023 907th HumanoidCPU 837 101 51ms 6 May 2024 907th eMGeeneer 837 101 363ms 27 Jun 2024 907th bac0id 837 101 53ms 29 Jun 2024 907th michaelmoynihan 837 101 387ms 3 Sep 2025 907th snoozingnewt 🇺🇸 837 101 371ms 6 Oct 2025 915th dokutan 836 88 49ms 9 Jun 2024 916th SirBogman 🇺🇸 835 36 9ms 5 May 2022 916th Natanaelel 🇸🇪 835 36 90ms 15 Jun 2022 916th Steffan153 🇫🇮 835 36 91ms 18 Jan 2023 916th codereport 🇨🇦 835 36 9ms 1 Jun 2024 916th GolfinK 835 36 9ms 21 Nov 2024 916th lifthrasiir 🇰🇷 835 36 9ms 1 Dec 2024 916th GolfingSuccess 🇬🇷 835 36 12ms 20 Mar 2025 923rd scpchicken 🇵🇼 835 55 11ms 4 May 2022 923rd SirBogman 🇺🇸 835 55 8ms 5 May 2022 923rd Shanethegamer 🇺🇸 835 55 6ms 19 May 2023 923rd DialFrost 🇸🇬 835 55 11ms 14 Feb 2025 927th inverseLorentz 🇦🇺 835 69 176ms 3 Jun 2024 927th Yewzir 🇧🇪 835 69 110ms 24 Dec 2024 927th CLOStrophobic 🇮🇹 835 69 174ms 28 May 2025 930th Re-Adventures 🇮🇳 835 116 260ms 16 Jul 2023 930th Yewzir 🇧🇪 835 116 256ms 7 Feb 2024 932nd ChiefChippy2 834 56 39ms 4 May 2022 932nd aksyristos 834 56 41ms 29 Jan 2023 932nd anter69 🇭🇺 834 56 39ms 12 Feb 2024 932nd 3dm4n 🇫🇮 834 56 52ms 11 Mar 2024 932nd lgrandco 834 56 41ms 9 Oct 2024 932nd tatzyr 🇯🇵 834 56 40ms 10 Dec 2024 938th moustave 834 67 22ms 7 Nov 2024 939th Alex-x90 🇺🇸 834 74 2ms 4 Dec 2022 939th undersquire 834 74 3ms 24 Jun 2023 939th rdmsr 834 74 2ms 24 Jun 2023 939th Bmrl7 834 74 3ms 9 Jul 2023 939th Vinterion 834 74 3ms 6 Nov 2023 939th namelessiw 834 74 3ms 28 Dec 2023 939th Jonatan6 🇩🇰 834 74 3ms 15 Mar 2024 939th Mandrzejy 🇵🇱 834 74 5ms 12 Apr 2024 939th kaurakeksi 🇫🇮 834 74 3ms 29 Dec 2024 948th Shanethegamer 🇺🇸 834 82 155ms 15 May 2023 949th p-vf 🇨🇭 834 93 317ms 24 Jun 2022 949th Smetalo 834 93 315ms 25 Aug 2022 949th malworthy 834 93 329ms 19 Aug 2024 952nd Natanaelel 🇸🇪 833 39 196ms 10 Feb 2025 953rd Steffan153 🇫🇮 833 55 78ms 21 Dec 2022 954th Shanethegamer 🇺🇸 833 57 1,051ms 15 Dec 2022 954th anter69 🇭🇺 833 57 876ms 23 Feb 2023 954th stefangimmillaro 833 57 891ms 6 May 2023 957th elisherer 🇮🇱 833 64 14ms 5 Jun 2022 957th Ashikpaul 🇮🇳 833 64 12ms 29 Jul 2022 957th LukeBridges 🇬🇧 833 64 10ms 26 Oct 2022 957th florton 833 64 14ms 18 Jan 2023 957th DayDun 🇸🇪 833 64 10ms 24 Jan 2023 957th lyphyser 833 64 11ms 3 Jun 2023 957th Davr1 🇨🇿 833 64 10ms 14 Oct 2023 957th stellartux 833 64 12ms 26 Dec 2023 957th goodwyna21 833 64 11ms 12 Nov 2024 957th xShadowBlade 833 64 11ms 26 Dec 2024 957th richard-oelze 🇩🇪 833 64 14ms 4 Aug 2025 968th MeWhenI 🇻🇦 833 101 26ms 5 May 2022 969th nwellnhof 🇩🇪 833 117 1,569ms 16 Nov 2022 970th MeWhenI 🇻🇦 832 90 40ms 13 Feb 2025 971st ovs-code 🇩🇪 831 60 140ms 3 Aug 2024 971st GrayJoKing 🇦🇺 831 60 142ms 24 Oct 2024 971st Shanethegamer 🇺🇸 831 60 139ms 19 Dec 2024 974th alphafalfa 831 65 5ms 23 Aug 2024 975th StronkCheese2 831 100 345ms 8 days ago First Prev 901–975 of 3,457 Next Last