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 Minesweeper 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 Binary Lambda Calculus 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 Minesweeper 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 Binary Lambda Calculus 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 895th michaelmoynihan 837 101 386ms 3 Sep 2025 895th snoozingnewt 🇺🇸 837 101 379ms 6 Oct 2025 903rd ovs-code 🇩🇪 836 85 17ms 11 Dec 2023 904th dokutan 836 88 49ms 9 Jun 2024 905th SirBogman 🇺🇸 835 36 9ms 5 May 2022 905th HPWiz 🇳🇿 835 36 10ms 7 May 2022 905th Natanaelel 🇸🇪 835 36 87ms 15 Jun 2022 905th Steffan153 🇫🇮 835 36 99ms 18 Jan 2023 905th codereport 🇨🇦 835 36 9ms 1 Jun 2024 905th GolfinK 835 36 9ms 21 Nov 2024 905th lifthrasiir 🇰🇷 835 36 9ms 1 Dec 2024 905th GolfingSuccess 🇬🇷 835 36 11ms 20 Mar 2025 913th scpchicken 🇵🇼 835 55 11ms 4 May 2022 913th SirBogman 🇺🇸 835 55 8ms 5 May 2022 913th Shanethegamer 🇺🇸 835 55 6ms 19 May 2023 913th DialFrost 🇸🇬 835 55 11ms 14 Feb 2025 917th Yewzir 🇧🇪 835 69 81ms 24 Dec 2024 918th Re-Adventures 🇮🇳 835 116 260ms 16 Jul 2023 918th Yewzir 🇧🇪 835 116 256ms 7 Feb 2024 920th MeWhenI 🇻🇦 835 164 1,715ms 13 mins ago 921st ChiefChippy2 834 56 39ms 4 May 2022 921st aksyristos 834 56 41ms 29 Jan 2023 921st anter69 🇭🇺 834 56 39ms 12 Feb 2024 921st 3dm4n 🇫🇮 834 56 52ms 11 Mar 2024 921st lgrandco 834 56 41ms 9 Oct 2024 921st tatzyr 🇯🇵 834 56 40ms 10 Dec 2024 927th moustave 834 67 21ms 7 Nov 2024 928th inverseLorentz 🇦🇺 834 69 176ms 3 Jun 2024 928th CLOStrophobic 🇮🇹 834 69 174ms 28 May 2025 930th Alex-x90 🇺🇸 834 74 2ms 4 Dec 2022 930th undersquire 834 74 3ms 24 Jun 2023 930th rdmsr 834 74 2ms 24 Jun 2023 930th Bmrl7 834 74 3ms 9 Jul 2023 930th Vinterion 834 74 3ms 6 Nov 2023 930th namelessiw 834 74 3ms 28 Dec 2023 930th Jonatan6 🇩🇰 834 74 3ms 15 Mar 2024 930th Mandrzejy 🇵🇱 834 74 5ms 12 Apr 2024 930th kaurakeksi 🇫🇮 834 74 3ms 29 Dec 2024 939th Shanethegamer 🇺🇸 834 82 155ms 15 May 2023 940th p-vf 🇨🇭 834 93 371ms 24 Jun 2022 940th Smetalo 834 93 380ms 25 Aug 2022 940th malworthy 834 93 370ms 19 Aug 2024 943rd Natanaelel 🇸🇪 833 39 196ms 10 Feb 2025 944th Shanethegamer 🇺🇸 833 57 1,051ms 15 Dec 2022 944th anter69 🇭🇺 833 57 876ms 23 Feb 2023 944th stefangimmillaro 833 57 891ms 6 May 2023 947th elisherer 🇮🇱 833 64 10ms 5 Jun 2022 947th Ashikpaul 🇮🇳 833 64 10ms 29 Jul 2022 947th LukeBridges 🇬🇧 833 64 12ms 26 Oct 2022 947th florton 833 64 11ms 18 Jan 2023 947th DayDun 🇸🇪 833 64 11ms 24 Jan 2023 947th lyphyser 833 64 13ms 3 Jun 2023 947th Davr1 🇨🇿 833 64 11ms 14 Oct 2023 947th stellartux 833 64 12ms 26 Dec 2023 947th goodwyna21 833 64 9ms 12 Nov 2024 947th xShadowBlade 833 64 10ms 26 Dec 2024 947th richard-oelze 🇩🇪 833 64 11ms 4 Aug 2025 958th nwellnhof 🇩🇪 833 117 1,569ms 16 Nov 2022 959th Steffan153 🇫🇮 832 55 78ms 21 Dec 2022 960th MeWhenI 🇻🇦 832 101 26ms 5 May 2022 961st ovs-code 🇩🇪 831 60 140ms 3 Aug 2024 961st GrayJoKing 🇦🇺 831 60 142ms 24 Oct 2024 961st Shanethegamer 🇺🇸 831 60 139ms 19 Dec 2024 964th alphafalfa 831 65 5ms 23 Aug 2024 965th sean-niemann 🇺🇸 830 67 10ms 5 May 2022 965th pschmid0 🇺🇸 830 67 5ms 5 Aug 2022 965th arobson13 🇨🇦 830 67 5ms 11 Apr 2023 965th janbehrens 🇩🇪 830 67 9ms 17 May 2023 969th rollershutter 830 78 4ms 8 Jul 2022 969th destofr 830 78 8ms 25 Aug 2022 969th 5quiwyrm 830 78 3ms 4 Sep 2022 969th thej10n 830 78 10ms 12 Jun 2024 969th SwordF-Official 830 78 3ms 27 Apr 2025 974th sean-niemann 🇺🇸 830 79 3,122ms 23 Oct 2024 974th DialFrost 🇸🇬 830 79 2,077ms 25 Oct 2024 First Prev 901–975 of 3,407 Next Last