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 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 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 Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 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 Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 675th rollershutter 859 65 9 Sep 2022 675th bac0id 859 65 26 Sep 2023 678th ovs-code 🇩🇪 859 133 8 Jul 2024 679th crizin 🇰🇷 859 136 9 Sep 2023 680th Setvizan 858 62 12 Jan 2023 680th GreenBeansAgainstVeganism 858 62 13 Jan 2023 680th arctouch-cristiannevianna 858 62 3 Apr 2023 680th Corxldyphik 858 62 11 Apr 2023 680th Blockyheadman 858 62 1 Nov 2023 680th ollyspooner 858 62 22 Nov 2023 680th itserasmus 858 62 25 Jan 2024 680th Jacob385 858 62 13 Mar 2024 680th junkondo-jp 858 62 30 Jun 2024 680th ShiraJoseph 🇺🇸 858 62 1 Mar 2025 690th Andriamanitra 🇫🇮 858 67 26 Apr 2023 691st steffan-polygolf 858 73 23 Feb 2023 691st MWI-polygolf 858 73 6 Dec 2023 691st HumanoidCPU 858 73 7 May 2024 694th Steffan153 🇫🇮 858 78 4 Feb 2023 695th ulucs 857 35 8 May 2022 695th GrayJoKing 🇦🇺 857 35 9 May 2022 695th bstrat 857 35 6 Jun 2024 695th wh3n3v3r 🇨🇿 857 35 18 Nov 2024 699th 5quiwyrm 857 52 4 Sep 2022 699th MeWhenI 🇻🇦 857 52 28 Jan 2023 699th Feniske 🇫🇷 857 52 7 Nov 2023 699th dcgjb 857 52 29 Jan 2024 699th JPRuskin 🇬🇧 857 52 7 Apr 2025 699th IISResetMe 857 52 7 Apr 2025 699th Ripick 857 52 67 mins ago 706th JRaspass 🇬🇧 856 41 4 May 2022 706th SirBogman 🇺🇸 856 41 4 May 2022 706th Natanaelel 🇸🇪 856 41 4 May 2022 709th GrayJoKing 🇦🇺 856 67 8 Feb 2025 710th jared-hughes 856 72 6 Jul 2022 710th Steffan153 🇫🇮 856 72 3 Jan 2023 710th MeWhenI 🇻🇦 856 72 7 May 2023 710th ListeriaM 856 72 22 Aug 2023 710th larcherMTT 856 72 5 Oct 2024 710th snyderek 🇺🇸 856 72 19 Feb 2025 716th MeWhenI 🇻🇦 856 81 23 May 2023 717th ovs-code 🇩🇪 854 83 1 Jul 2024 718th KatieLG 🇬🇧 854 115 25 Sep 2022 718th emgordon154 854 115 17 Jan 2025 720th MeWhenI 🇻🇦 854 145 28 Mar 2025 721st DialFrost 🇸🇬 853 50 24 Oct 2023 722nd eshilo-draper 853 91 4 Sep 2022 722nd ericlangedijk 🇸🇮 853 91 23 May 2023 722nd KatieLG 🇬🇧 853 91 30 Apr 2024 722nd Mikey-Beep 🇬🇧 853 91 3 Sep 2024 726th eshilo-draper 853 137 4 Sep 2022 727th ovs-code 🇩🇪 852 85 11 Dec 2023 728th yeminghan2021 852 99 3 Feb 2025 729th Shanethegamer 🇺🇸 851 83 4 May 2022 730th 386asm 🇺🇸 851 86 9 Apr 2023 731st Frowny 850 38 5 May 2022 731st stackofbears 850 38 14 Mar 2025 733rd o0lit3 🇺🇸 850 54 22 Jun 2023 733rd Natanaelel 🇸🇪 850 54 10 Feb 2025 735th MeWhenI 🇻🇦 850 71 13 Dec 2022 736th typeswitch-dev 🇵🇹 850 75 22 Jul 2023 737th frosster 850 76 12 May 2023 737th kyleclaassen 850 76 20 May 2023 737th RockOfStone 850 76 17 Mar 2024 737th NickTheEASDude 🇺🇸 850 76 7 May 2024 737th Antibrain0 850 76 8 Nov 2024 742nd MeWhenI 🇻🇦 850 92 10 Oct 2022 742nd Betuaredead 850 92 5 Jan 2023 742nd emgordon154 850 92 5 days ago 745th Yewzir 🇧🇪 849 65 9 Oct 2023 745th MeWhenI 🇻🇦 849 65 10 Oct 2023 747th Shanethegamer 🇺🇸 849 99 27 Apr 2023 748th SirBogman 🇺🇸 848 55 5 May 2022 748th xiBread 🇺🇸 848 55 6 May 2022 748th 4hg 🇺🇸 848 55 24 Aug 2022 Prev 676–750 of 3,055 Next