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 666th masinag 🇮🇹 869 71 6 Oct 2024 677th AlephSquirrel 869 80 20 Apr 2023 677th ashtraypettingzoo 🇺🇸 869 80 1 Apr 2024 679th nwellnhof 🇩🇪 867 53 4 May 2022 679th GrayJoKing 🇦🇺 867 53 6 May 2022 681st dokutan 867 82 1 Jul 2024 682nd Shanethegamer 🇺🇸 866 70 12 Dec 2022 682nd Alessandro-Balconi 🇮🇹 866 70 26 Dec 2022 684th dieggsy 866 97 8 Oct 2024 685th Andriamanitra 🇫🇮 865 54 21 Jul 2022 685th jared-hughes 865 54 12 Sep 2022 685th OhmNomNom 865 54 7 Oct 2022 685th olleicua 🇺🇸 865 54 21 Jan 2024 685th LostSyntax21 🇬🇧 865 54 12 Mar 2025 685th AbrahamJLR 🇻🇪 865 54 4 Jun 2025 685th vishal-mohanty 865 54 25 Aug 2025 692nd MeWhenI 🇻🇦 865 85 27 Jun 2022 692nd Shanethegamer 🇺🇸 865 85 15 May 2023 692nd albanian-laundromat 865 85 25 Aug 2025 695th GolfingSuccess 🇬🇷 864 57 29 Aug 2025 696th DialFrost 🇸🇬 864 64 10 Jul 2024 697th JayXon 🇺🇸 864 157 14 Sep 2025 698th mtirado1 863 75 13 Aug 2022 699th ovs-code 🇩🇪 863 133 8 Jul 2024 700th deadp4nda 🇩🇪 862 90 26 Apr 2024 700th 123mjb 862 90 23 Jun 2025 700th michelebastione 🇮🇹 862 90 24 Aug 2025 703rd TylerBloom 862 96 22 Mar 2024 704th shellbertt 🇨🇦 862 98 9 May 2022 704th iakolzin 862 98 26 May 2022 704th Betuaredead 862 98 5 Jan 2023 704th oceko 862 98 19 Feb 2024 704th dokutan 862 98 17 Mar 2024 704th cuzdav 862 98 4 May 2025 704th timhaj 🇸🇮 862 98 12 Sep 2025 704th Yax42 🇫🇷 862 98 8 days ago 712th steffan-polygolf 861 73 23 Feb 2023 712th MWI-polygolf 861 73 6 Dec 2023 712th HumanoidCPU 861 73 7 May 2024 715th Steffan153 🇫🇮 861 82 23 Feb 2023 716th GrayJoKing 🇦🇺 860 56 15 Jan 2024 716th AlephSquirrel 860 56 21 Jan 2024 718th yzhs 🇩🇪 860 65 16 Jun 2022 718th rollershutter 860 65 9 Sep 2022 718th bac0id 860 65 26 Sep 2023 718th mossiegoat 860 65 8 Jun 2025 718th RaBa21 🇭🇺 860 65 11 Jul 2025 723rd GrayJoKing 🇦🇺 860 67 8 Feb 2025 724th Setvizan 859 62 12 Jan 2023 724th GreenBeansAgainstVeganism 859 62 13 Jan 2023 724th arctouch-cristiannevianna 859 62 3 Apr 2023 724th Corxldyphik 859 62 11 Apr 2023 724th Blockyheadman 859 62 1 Nov 2023 724th ollyspooner 859 62 22 Nov 2023 724th itserasmus 859 62 25 Jan 2024 724th Jacob385 859 62 13 Mar 2024 724th junkondo-jp 859 62 30 Jun 2024 724th ShiraJoseph 🇺🇸 859 62 1 Mar 2025 734th Andriamanitra 🇫🇮 859 67 26 Apr 2023 735th Steffan153 🇫🇮 859 78 4 Feb 2023 736th ulucs 858 35 8 May 2022 736th bstrat 858 35 6 Jun 2024 736th wh3n3v3r 🇨🇿 858 35 18 Nov 2024 739th JRaspass 🇬🇧 858 41 4 May 2022 739th SirBogman 🇺🇸 858 41 4 May 2022 739th Natanaelel 🇸🇪 858 41 4 May 2022 742nd MeWhenI 🇻🇦 858 81 23 May 2023 743rd 5quiwyrm 857 52 4 Sep 2022 743rd MeWhenI 🇻🇦 857 52 28 Jan 2023 743rd Feniske 🇫🇷 857 52 7 Nov 2023 743rd dcgjb 857 52 29 Jan 2024 743rd JPRuskin 🇬🇧 857 52 7 Apr 2025 743rd IISResetMe 857 52 7 Apr 2025 743rd Ripick 857 52 1 Jun 2025 750th jared-hughes 857 72 6 Jul 2022 First Prev 676–750 of 3,370 Next Last