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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 901st Yewzir 🇧🇪 835 69 24 Dec 2024 902nd Andriamanitra 🇫🇮 835 83 17 Apr 2023 902nd Natanaelel 🇸🇪 835 83 8 Jul 2023 904th CLOStrophobic 🇮🇹 835 89 14 Feb 2025 905th Steffan153 🇫🇮 835 97 18 Jan 2023 906th SirBogman 🇺🇸 834 36 5 May 2022 906th HPWiz 🇳🇿 834 36 7 May 2022 906th Natanaelel 🇸🇪 834 36 15 Jun 2022 906th Steffan153 🇫🇮 834 36 18 Jan 2023 906th codereport 🇨🇦 834 36 1 Jun 2024 906th GolfinK 834 36 21 Nov 2024 906th lifthrasiir 🇰🇷 834 36 1 Dec 2024 906th GolfingSuccess 🇬🇷 834 36 20 Mar 2025 914th ChiefChippy2 834 56 4 May 2022 914th aksyristos 834 56 29 Jan 2023 914th anter69 🇭🇺 834 56 12 Feb 2024 914th 3dm4n 🇫🇮 834 56 11 Mar 2024 914th lgrandco 834 56 9 Oct 2024 914th tatzyr 🇯🇵 834 56 10 Dec 2024 920th moustave 834 67 7 Nov 2024 921st inverseLorentz 🇦🇺 834 69 3 Jun 2024 921st CLOStrophobic 🇮🇹 834 69 28 May 2025 923rd ovs-code 🇩🇪 834 85 11 Dec 2023 924th p-vf 🇨🇭 834 93 24 Jun 2022 924th Smetalo 834 93 25 Aug 2022 924th malworthy 834 93 19 Aug 2024 927th Alex-x90 🇺🇸 833 74 4 Dec 2022 927th undersquire 833 74 24 Jun 2023 927th rdmsr 833 74 24 Jun 2023 927th Bmrl7 833 74 9 Jul 2023 927th Vinterion 833 74 6 Nov 2023 927th namelessiw 833 74 28 Dec 2023 927th Jonatan6 🇩🇰 833 74 15 Mar 2024 927th Mandrzejy 🇵🇱 833 74 12 Apr 2024 927th kaurakeksi 🇫🇮 833 74 29 Dec 2024 936th Shanethegamer 🇺🇸 833 82 15 May 2023 937th dokutan 833 88 9 Jun 2024 938th nwellnhof 🇩🇪 833 117 16 Nov 2022 939th Steffan153 🇫🇮 832 55 21 Dec 2022 940th Shanethegamer 🇺🇸 832 57 15 Dec 2022 940th anter69 🇭🇺 832 57 23 Feb 2023 940th stefangimmillaro 832 57 6 May 2023 943rd elisherer 🇮🇱 832 64 5 Jun 2022 943rd Ashikpaul 🇮🇳 832 64 29 Jul 2022 943rd LukeBridges 🇬🇧 832 64 26 Oct 2022 943rd florton 832 64 18 Jan 2023 943rd DayDun 🇸🇪 832 64 24 Jan 2023 943rd lyphyser 832 64 3 Jun 2023 943rd Davr1 🇨🇿 832 64 14 Oct 2023 943rd stellartux 832 64 26 Dec 2023 943rd goodwyna21 832 64 12 Nov 2024 943rd xShadowBlade 832 64 26 Dec 2024 943rd richard-oelze 🇩🇪 832 64 22 days ago 954th MeWhenI 🇻🇦 832 101 5 May 2022 955th emplv 🇱🇻 832 124 31 Oct 2022 956th Natanaelel 🇸🇪 830 39 10 Feb 2025 957th ovs-code 🇩🇪 830 60 3 Aug 2024 957th GrayJoKing 🇦🇺 830 60 24 Oct 2024 957th Shanethegamer 🇺🇸 830 60 19 Dec 2024 960th alphafalfa 830 65 23 Aug 2024 961st sean-niemann 🇺🇸 829 67 5 May 2022 961st pschmid0 🇺🇸 829 67 5 Aug 2022 961st arobson13 🇨🇦 829 67 11 Apr 2023 961st janbehrens 🇩🇪 829 67 17 May 2023 965th rollershutter 829 78 8 Jul 2022 965th destofr 829 78 25 Aug 2022 965th 5quiwyrm 829 78 4 Sep 2022 965th thej10n 829 78 12 Jun 2024 965th SwordF-Official 829 78 27 Apr 2025 970th yashima 829 141 19 Oct 2024 971st tkr-sh 🇫🇷 828 102 20 Aug 2022 971st trist224 🇫🇷 828 102 14 Dec 2022 973rd GolfingSuccess 🇬🇷 828 150 18 Jan 2025 973rd ovs-code 🇩🇪 828 150 27 Mar 2025 975th msbranicky 827 100 5 Oct 2023 Prev 901–975 of 3,261 Next