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 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 Trinomial Triangle 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 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 Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 898th Bmrl7 833 74 9 Jul 2023 898th Vinterion 833 74 6 Nov 2023 898th namelessiw 833 74 28 Dec 2023 898th Jonatan6 🇩🇰 833 74 15 Mar 2024 898th Mandrzejy 🇵🇱 833 74 12 Apr 2024 898th kaurakeksi 🇫🇮 833 74 29 Dec 2024 907th nwellnhof 🇩🇪 833 117 16 Nov 2022 908th Natanaelel 🇸🇪 832 39 10 Feb 2025 909th Steffan153 🇫🇮 832 55 21 Dec 2022 910th Shanethegamer 🇺🇸 832 57 15 Dec 2022 910th anter69 🇭🇺 832 57 23 Feb 2023 910th stefangimmillaro 832 57 6 May 2023 913th elisherer 🇮🇱 832 64 5 Jun 2022 913th Ashikpaul 🇮🇳 832 64 29 Jul 2022 913th LukeBridges 🇬🇧 832 64 26 Oct 2022 913th florton 832 64 18 Jan 2023 913th DayDun 🇸🇪 832 64 24 Jan 2023 913th lyphyser 832 64 3 Jun 2023 913th Davr1 🇨🇿 832 64 14 Oct 2023 913th stellartux 832 64 26 Dec 2023 913th goodwyna21 832 64 12 Nov 2024 913th xShadowBlade 832 64 26 Dec 2024 913th richard-oelze 🇩🇪 832 64 4 Aug 2025 924th MeWhenI 🇻🇦 832 101 5 May 2022 925th alphafalfa 831 65 23 Aug 2024 926th ovs-code 🇩🇪 830 60 3 Aug 2024 926th GrayJoKing 🇦🇺 830 60 24 Oct 2024 926th Shanethegamer 🇺🇸 830 60 19 Dec 2024 929th sean-niemann 🇺🇸 830 67 5 May 2022 929th pschmid0 🇺🇸 830 67 5 Aug 2022 929th arobson13 🇨🇦 830 67 11 Apr 2023 929th janbehrens 🇩🇪 830 67 17 May 2023 933rd rollershutter 830 78 8 Jul 2022 933rd destofr 830 78 25 Aug 2022 933rd 5quiwyrm 830 78 4 Sep 2022 933rd thej10n 830 78 12 Jun 2024 933rd SwordF-Official 830 78 27 Apr 2025 938th msbranicky 828 100 5 Oct 2023 938th dokutan 828 100 3 Oct 2024 940th tkr-sh 🇫🇷 828 102 20 Aug 2022 940th trist224 🇫🇷 828 102 14 Dec 2022 942nd kimbo 🇺🇸 828 119 28 Dec 2022 943rd GolfingSuccess 🇬🇷 828 150 18 Jan 2025 943rd ovs-code 🇩🇪 828 150 27 Mar 2025 945th sean-niemann 🇺🇸 827 79 23 Oct 2024 945th DialFrost 🇸🇬 827 79 25 Oct 2024 945th emgordon154 827 79 27 Oct 2024 945th stefangimmillaro 827 79 28 Oct 2024 949th MeWhenI 🇻🇦 827 90 13 Feb 2025 950th TaserTheFox 🇺🇸 826 54 31 May 2023 951st DialFrost 🇸🇬 826 86 15 Dec 2024 952nd trinityy-7 825 94 7 Mar 2024 952nd Squimbletin 825 94 19 Apr 2025 952nd TheZwierzLF 🇵🇱 825 94 2 Jun 2025 955th frankgraziano 824 205 21 Aug 2025 956th Bubbler-4 822 68 15 Nov 2022 956th neel11235813 822 68 31 Dec 2022 956th Rubiksmath 822 68 14 Aug 2023 956th SB-945 822 68 7 Feb 2024 960th RobertHoeh 822 70 28 Jan 2024 960th jamiloBBKing 822 70 31 Jan 2025 962nd AlephSquirrel 822 75 12 Jan 2023 962nd Yewzir 🇧🇪 822 75 22 Apr 2023 962nd Shanethegamer 🇺🇸 822 75 15 May 2023 962nd imma-Spring 822 75 15 Nov 2023 962nd noahgitsham 822 75 20 Jun 2024 962nd not-a-pokemon 822 75 13 Apr 2025 968th Shanethegamer 🇺🇸 821 52 9 Mar 2023 969th dokutan 821 79 20 Mar 2025 970th DialFrost 🇸🇬 821 86 10 Mar 2025 971st ibeucaly 821 120 20 Sep 2022 971st ComputerKWasTaken 🇺🇸 821 120 20 Jan 2025 973rd JRaspass 🇬🇧 820 56 4 May 2022 973rd ChiefChippy2 820 56 4 May 2022 975th wansacis 🇩🇪 820 65 13 May 2022 Prev 901–975 of 3,319 Next