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 900th undersquire 833 74 24 Jun 2023 900th rdmsr 833 74 24 Jun 2023 900th Bmrl7 833 74 9 Jul 2023 900th Vinterion 833 74 6 Nov 2023 900th namelessiw 833 74 28 Dec 2023 900th Jonatan6 🇩🇰 833 74 15 Mar 2024 900th Mandrzejy 🇵🇱 833 74 12 Apr 2024 900th kaurakeksi 🇫🇮 833 74 29 Dec 2024 909th nwellnhof 🇩🇪 833 117 16 Nov 2022 910th Natanaelel 🇸🇪 832 39 10 Feb 2025 911th Steffan153 🇫🇮 832 55 21 Dec 2022 912th Shanethegamer 🇺🇸 832 57 15 Dec 2022 912th anter69 🇭🇺 832 57 23 Feb 2023 912th stefangimmillaro 832 57 6 May 2023 915th elisherer 🇮🇱 832 64 5 Jun 2022 915th Ashikpaul 🇮🇳 832 64 29 Jul 2022 915th LukeBridges 🇬🇧 832 64 26 Oct 2022 915th florton 832 64 18 Jan 2023 915th DayDun 🇸🇪 832 64 24 Jan 2023 915th lyphyser 832 64 3 Jun 2023 915th Davr1 🇨🇿 832 64 14 Oct 2023 915th stellartux 832 64 26 Dec 2023 915th goodwyna21 832 64 12 Nov 2024 915th xShadowBlade 832 64 26 Dec 2024 915th richard-oelze 🇩🇪 832 64 4 Aug 2025 926th MeWhenI 🇻🇦 832 101 5 May 2022 927th ovs-code 🇩🇪 831 60 3 Aug 2024 927th GrayJoKing 🇦🇺 831 60 24 Oct 2024 927th Shanethegamer 🇺🇸 831 60 19 Dec 2024 930th alphafalfa 831 65 23 Aug 2024 931st sean-niemann 🇺🇸 830 67 5 May 2022 931st pschmid0 🇺🇸 830 67 5 Aug 2022 931st arobson13 🇨🇦 830 67 11 Apr 2023 931st janbehrens 🇩🇪 830 67 17 May 2023 935th rollershutter 830 78 8 Jul 2022 935th destofr 830 78 25 Aug 2022 935th 5quiwyrm 830 78 4 Sep 2022 935th thej10n 830 78 12 Jun 2024 935th SwordF-Official 830 78 27 Apr 2025 940th msbranicky 828 100 5 Oct 2023 940th dokutan 828 100 3 Oct 2024 942nd tkr-sh 🇫🇷 828 102 20 Aug 2022 942nd trist224 🇫🇷 828 102 14 Dec 2022 944th kimbo 🇺🇸 828 119 28 Dec 2022 945th GolfingSuccess 🇬🇷 828 150 18 Jan 2025 945th ovs-code 🇩🇪 828 150 27 Mar 2025 947th sean-niemann 🇺🇸 827 79 23 Oct 2024 947th DialFrost 🇸🇬 827 79 25 Oct 2024 947th emgordon154 827 79 27 Oct 2024 947th stefangimmillaro 827 79 28 Oct 2024 951st MeWhenI 🇻🇦 827 90 13 Feb 2025 952nd TaserTheFox 🇺🇸 826 54 31 May 2023 953rd DialFrost 🇸🇬 826 86 15 Dec 2024 954th trinityy-7 825 94 7 Mar 2024 954th Squimbletin 825 94 19 Apr 2025 954th TheZwierzLF 🇵🇱 825 94 2 Jun 2025 957th frankgraziano 824 205 21 Aug 2025 958th Bubbler-4 822 68 15 Nov 2022 958th neel11235813 822 68 31 Dec 2022 958th Rubiksmath 822 68 14 Aug 2023 958th SB-945 822 68 7 Feb 2024 962nd RobertHoeh 822 70 28 Jan 2024 962nd jamiloBBKing 822 70 31 Jan 2025 964th AlephSquirrel 822 75 12 Jan 2023 964th Yewzir 🇧🇪 822 75 22 Apr 2023 964th Shanethegamer 🇺🇸 822 75 15 May 2023 964th imma-Spring 822 75 15 Nov 2023 964th noahgitsham 822 75 20 Jun 2024 964th not-a-pokemon 822 75 13 Apr 2025 970th Shanethegamer 🇺🇸 821 52 9 Mar 2023 971st dokutan 821 79 20 Mar 2025 972nd DialFrost 🇸🇬 821 86 10 Mar 2025 973rd ibeucaly 821 120 20 Sep 2022 973rd ComputerKWasTaken 🇺🇸 821 120 20 Jan 2025 975th JRaspass 🇬🇧 820 56 4 May 2022 Prev 901–975 of 3,329 Next