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 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 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 Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 747th Antibrain0 850 76 8 Nov 2024 752nd MeWhenI 🇻🇦 850 92 10 Oct 2022 752nd Betuaredead 850 92 5 Jan 2023 752nd emgordon154 850 92 22 days ago 755th Yewzir 🇧🇪 849 65 9 Oct 2023 755th MeWhenI 🇻🇦 849 65 10 Oct 2023 757th Shanethegamer 🇺🇸 849 99 27 Apr 2023 758th SirBogman 🇺🇸 848 55 5 May 2022 758th xiBread 🇺🇸 848 55 6 May 2022 758th 4hg 🇺🇸 848 55 24 Aug 2022 758th DialFrost 🇸🇬 848 55 1 Jan 2023 758th error256 848 55 4 May 2024 763rd JayXon 🇺🇸 847 56 9 May 2022 764th Re-Adventures 🇮🇳 847 116 16 Jul 2023 764th Yewzir 🇧🇪 847 116 7 Feb 2024 766th azka1368 847 138 23 Nov 2023 767th MeWhenI 🇻🇦 846 26 25 Aug 2022 767th AlephSquirrel 846 26 6 Jan 2023 767th ovs-code 🇩🇪 846 26 5 May 2024 767th saito-ta 🇯🇵 846 26 12 Dec 2024 771st the-zammers 846 68 2 Oct 2023 772nd mtirado1 846 74 24 Dec 2022 772nd Betuaredead 846 74 6 Jan 2023 772nd KatieLG 🇬🇧 846 74 15 Jan 2023 772nd bwat2 846 74 31 Mar 2023 772nd stackotter 846 74 29 May 2023 772nd ovs-code 🇩🇪 846 74 17 Apr 2024 772nd madeforlosers 846 74 21 Nov 2024 779th randolchance 845 63 8 Jan 2023 779th CatsAreFluffy 845 63 18 Feb 2023 779th amiralitaheri 845 63 23 Feb 2023 779th RuyiLi 845 63 1 Apr 2023 779th TaserTheFox 🇺🇸 845 63 25 May 2023 779th pfysches-boop 845 63 6 Aug 2023 779th mhgockel 845 63 19 Aug 2023 779th NickTheEASDude 🇺🇸 845 63 18 Jan 2024 779th 823126 845 63 14 Nov 2024 779th Palladium02 845 63 12 May 2025 779th 4very 845 63 8 days ago 779th gigaprofisi 🇺🇸 845 63 2 days ago 791st NewDefectus 🇮🇱 844 73 6 May 2022 791st inventshah 844 73 12 Jun 2022 791st Natanaelel 🇸🇪 844 73 15 Jun 2022 791st 5quiwyrm 844 73 19 Oct 2022 791st Herbert00709 🇵🇱 844 73 22 Dec 2023 791st LorenzoDeGaspari 844 73 27 May 2024 797th bschorno 844 92 12 Oct 2022 797th kellantech 844 92 4 Jul 2023 797th Mezzofloat 844 92 26 Aug 2023 797th Maximizer02 844 92 1 Oct 2023 797th michelebastione 🇮🇹 844 92 22 Dec 2023 797th madeforlosers 844 92 21 Nov 2024 797th 123mjb 844 92 16 days ago 804th jared-hughes 844 100 20 Jul 2022 804th ZakkkkAttackkkk 🇵🇭 844 100 10 Aug 2022 804th Walter225 844 100 25 Jul 2023 807th Natanaelel 🇸🇪 843 57 17 Jan 2024 807th Kacarott 🇦🇺 843 57 10 Sep 2024 809th retrohun 843 64 6 Nov 2022 809th Re-Adventures 🇮🇳 843 64 7 Nov 2022 809th stellartux 843 64 26 Dec 2023 809th bac0id 843 64 29 Jun 2024 809th snoozingnewt 🇺🇸 843 64 1 Sep 2024 814th DialFrost 🇸🇬 843 86 15 Dec 2024 815th Shanethegamer 🇺🇸 843 98 26 Oct 2022 815th emgordon154 843 98 18 Feb 2025 817th krcs 🇵🇱 841 53 9 May 2022 817th ryanlanegit 841 53 19 Jun 2022 817th sisyphus-ppcg 🇦🇺 841 53 15 Aug 2022 820th DialFrost 🇸🇬 841 66 7 Apr 2025 821st Shanethegamer 🇺🇸 841 82 15 May 2023 822nd lynn 841 96 11 Jul 2023 823rd Smetalo 841 139 25 Aug 2022 823rd ToxicP1e 841 139 2 Mar 2023 825th janAkali 🇷🇺 840 77 12 Feb 2025 Prev 751–825 of 3,075 Next