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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 898th DialFrost 🇸🇬 835 55 11ms 14 Feb 2025 902nd Yewzir 🇧🇪 835 69 81ms 24 Dec 2024 903rd Re-Adventures 🇮🇳 835 116 272ms 16 Jul 2023 903rd Yewzir 🇧🇪 835 116 285ms 7 Feb 2024 905th SirBogman 🇺🇸 834 36 14ms 5 May 2022 905th HPWiz 🇳🇿 834 36 11ms 7 May 2022 905th Natanaelel 🇸🇪 834 36 93ms 15 Jun 2022 905th Steffan153 🇫🇮 834 36 96ms 18 Jan 2023 905th codereport 🇨🇦 834 36 9ms 1 Jun 2024 905th GolfinK 834 36 10ms 21 Nov 2024 905th lifthrasiir 🇰🇷 834 36 11ms 1 Dec 2024 905th GolfingSuccess 🇬🇷 834 36 12ms 20 Mar 2025 913th ChiefChippy2 834 56 39ms 4 May 2022 913th aksyristos 834 56 41ms 29 Jan 2023 913th anter69 🇭🇺 834 56 39ms 12 Feb 2024 913th 3dm4n 🇫🇮 834 56 52ms 11 Mar 2024 913th lgrandco 834 56 41ms 9 Oct 2024 913th tatzyr 🇯🇵 834 56 40ms 10 Dec 2024 919th moustave 834 67 21ms 7 Nov 2024 920th inverseLorentz 🇦🇺 834 69 176ms 3 Jun 2024 920th CLOStrophobic 🇮🇹 834 69 174ms 28 May 2025 922nd Shanethegamer 🇺🇸 834 82 155ms 15 May 2023 923rd p-vf 🇨🇭 834 93 371ms 24 Jun 2022 923rd Smetalo 834 93 380ms 25 Aug 2022 923rd malworthy 834 93 370ms 19 Aug 2024 926th Shanethegamer 🇺🇸 833 57 1,051ms 15 Dec 2022 926th anter69 🇭🇺 833 57 876ms 23 Feb 2023 926th stefangimmillaro 833 57 891ms 6 May 2023 929th elisherer 🇮🇱 833 64 10ms 5 Jun 2022 929th Ashikpaul 🇮🇳 833 64 10ms 29 Jul 2022 929th LukeBridges 🇬🇧 833 64 12ms 26 Oct 2022 929th florton 833 64 11ms 18 Jan 2023 929th DayDun 🇸🇪 833 64 11ms 24 Jan 2023 929th lyphyser 833 64 13ms 3 Jun 2023 929th Davr1 🇨🇿 833 64 11ms 14 Oct 2023 929th stellartux 833 64 12ms 26 Dec 2023 929th goodwyna21 833 64 9ms 12 Nov 2024 929th xShadowBlade 833 64 10ms 26 Dec 2024 929th richard-oelze 🇩🇪 833 64 11ms 4 Aug 2025 940th Alex-x90 🇺🇸 833 74 2ms 4 Dec 2022 940th undersquire 833 74 3ms 24 Jun 2023 940th rdmsr 833 74 2ms 24 Jun 2023 940th Bmrl7 833 74 3ms 9 Jul 2023 940th Vinterion 833 74 3ms 6 Nov 2023 940th namelessiw 833 74 3ms 28 Dec 2023 940th Jonatan6 🇩🇰 833 74 3ms 15 Mar 2024 940th Mandrzejy 🇵🇱 833 74 5ms 12 Apr 2024 940th kaurakeksi 🇫🇮 833 74 3ms 29 Dec 2024 949th nwellnhof 🇩🇪 833 117 1,569ms 16 Nov 2022 950th Natanaelel 🇸🇪 832 39 196ms 10 Feb 2025 951st Steffan153 🇫🇮 832 55 78ms 21 Dec 2022 952nd MeWhenI 🇻🇦 832 101 26ms 5 May 2022 953rd ovs-code 🇩🇪 831 60 137ms 3 Aug 2024 953rd GrayJoKing 🇦🇺 831 60 183ms 24 Oct 2024 953rd Shanethegamer 🇺🇸 831 60 175ms 19 Dec 2024 956th alphafalfa 831 65 5ms 23 Aug 2024 957th sean-niemann 🇺🇸 830 67 10ms 5 May 2022 957th pschmid0 🇺🇸 830 67 6ms 5 Aug 2022 957th arobson13 🇨🇦 830 67 6ms 11 Apr 2023 957th janbehrens 🇩🇪 830 67 10ms 17 May 2023 961st rollershutter 830 78 4ms 8 Jul 2022 961st destofr 830 78 8ms 25 Aug 2022 961st 5quiwyrm 830 78 3ms 4 Sep 2022 961st thej10n 830 78 10ms 12 Jun 2024 961st SwordF-Official 830 78 3ms 27 Apr 2025 966th sean-niemann 🇺🇸 830 79 2,510ms 23 Oct 2024 966th DialFrost 🇸🇬 830 79 2,804ms 25 Oct 2024 966th emgordon154 830 79 2,387ms 27 Oct 2024 966th stefangimmillaro 830 79 2,640ms 28 Oct 2024 970th msbranicky 828 100 135ms 5 Oct 2023 970th dokutan 828 100 126ms 3 Oct 2024 972nd tkr-sh 🇫🇷 828 102 424ms 20 Aug 2022 972nd trist224 🇫🇷 828 102 402ms 14 Dec 2022 974th GolfingSuccess 🇬🇷 828 150 942ms 18 Jan 2025 974th ovs-code 🇩🇪 828 150 963ms 27 Mar 2025 First Prev 901–975 of 3,386 Next Last