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 Crossword 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 Crossword 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 901st ovs-code 🇩🇪 837 85 17ms 11 Dec 2023 902nd Steffan153 🇫🇮 837 97 33ms 18 Jan 2023 903rd CatsAreFluffy 837 101 56ms 18 Feb 2023 903rd annaproxy 837 101 54ms 9 May 2023 903rd wojtekmal 837 101 54ms 15 Nov 2023 903rd HumanoidCPU 837 101 53ms 6 May 2024 903rd eMGeeneer 837 101 378ms 27 Jun 2024 903rd bac0id 837 101 55ms 29 Jun 2024 903rd michaelmoynihan 837 101 386ms 3 Sep 2025 903rd snoozingnewt 🇺🇸 837 101 379ms 6 Oct 2025 911th dokutan 836 88 49ms 9 Jun 2024 912th SirBogman 🇺🇸 835 36 9ms 5 May 2022 912th Natanaelel 🇸🇪 835 36 89ms 15 Jun 2022 912th Steffan153 🇫🇮 835 36 94ms 18 Jan 2023 912th codereport 🇨🇦 835 36 9ms 1 Jun 2024 912th GolfinK 835 36 9ms 21 Nov 2024 912th lifthrasiir 🇰🇷 835 36 9ms 1 Dec 2024 912th GolfingSuccess 🇬🇷 835 36 14ms 20 Mar 2025 919th scpchicken 🇵🇼 835 55 11ms 4 May 2022 919th SirBogman 🇺🇸 835 55 8ms 5 May 2022 919th Shanethegamer 🇺🇸 835 55 6ms 19 May 2023 919th DialFrost 🇸🇬 835 55 11ms 14 Feb 2025 923rd Yewzir 🇧🇪 835 69 110ms 24 Dec 2024 924th Re-Adventures 🇮🇳 835 116 260ms 16 Jul 2023 924th Yewzir 🇧🇪 835 116 256ms 7 Feb 2024 926th ChiefChippy2 834 56 39ms 4 May 2022 926th aksyristos 834 56 41ms 29 Jan 2023 926th anter69 🇭🇺 834 56 39ms 12 Feb 2024 926th 3dm4n 🇫🇮 834 56 52ms 11 Mar 2024 926th lgrandco 834 56 41ms 9 Oct 2024 926th tatzyr 🇯🇵 834 56 40ms 10 Dec 2024 932nd moustave 834 67 22ms 7 Nov 2024 933rd inverseLorentz 🇦🇺 834 69 176ms 3 Jun 2024 933rd CLOStrophobic 🇮🇹 834 69 174ms 28 May 2025 935th Alex-x90 🇺🇸 834 74 2ms 4 Dec 2022 935th undersquire 834 74 3ms 24 Jun 2023 935th rdmsr 834 74 2ms 24 Jun 2023 935th Bmrl7 834 74 3ms 9 Jul 2023 935th Vinterion 834 74 3ms 6 Nov 2023 935th namelessiw 834 74 3ms 28 Dec 2023 935th Jonatan6 🇩🇰 834 74 3ms 15 Mar 2024 935th Mandrzejy 🇵🇱 834 74 5ms 12 Apr 2024 935th kaurakeksi 🇫🇮 834 74 3ms 29 Dec 2024 944th Shanethegamer 🇺🇸 834 82 155ms 15 May 2023 945th p-vf 🇨🇭 834 93 371ms 24 Jun 2022 945th Smetalo 834 93 380ms 25 Aug 2022 945th malworthy 834 93 370ms 19 Aug 2024 948th Natanaelel 🇸🇪 833 39 196ms 10 Feb 2025 949th Steffan153 🇫🇮 833 55 78ms 21 Dec 2022 950th Shanethegamer 🇺🇸 833 57 1,051ms 15 Dec 2022 950th anter69 🇭🇺 833 57 876ms 23 Feb 2023 950th stefangimmillaro 833 57 891ms 6 May 2023 953rd elisherer 🇮🇱 833 64 15ms 5 Jun 2022 953rd Ashikpaul 🇮🇳 833 64 9ms 29 Jul 2022 953rd LukeBridges 🇬🇧 833 64 11ms 26 Oct 2022 953rd florton 833 64 14ms 18 Jan 2023 953rd DayDun 🇸🇪 833 64 10ms 24 Jan 2023 953rd lyphyser 833 64 10ms 3 Jun 2023 953rd Davr1 🇨🇿 833 64 10ms 14 Oct 2023 953rd stellartux 833 64 10ms 26 Dec 2023 953rd goodwyna21 833 64 10ms 12 Nov 2024 953rd xShadowBlade 833 64 10ms 26 Dec 2024 953rd richard-oelze 🇩🇪 833 64 13ms 4 Aug 2025 964th MeWhenI 🇻🇦 833 101 26ms 5 May 2022 965th nwellnhof 🇩🇪 833 117 1,569ms 16 Nov 2022 966th ovs-code 🇩🇪 831 60 140ms 3 Aug 2024 966th GrayJoKing 🇦🇺 831 60 142ms 24 Oct 2024 966th Shanethegamer 🇺🇸 831 60 139ms 19 Dec 2024 969th alphafalfa 831 65 5ms 23 Aug 2024 970th StronkCheese2 831 100 345ms 2 days ago 971st sean-niemann 🇺🇸 830 67 10ms 5 May 2022 971st pschmid0 🇺🇸 830 67 5ms 5 Aug 2022 971st arobson13 🇨🇦 830 67 5ms 11 Apr 2023 971st janbehrens 🇩🇪 830 67 9ms 17 May 2023 975th rollershutter 830 78 4ms 8 Jul 2022 First Prev 901–975 of 3,440 Next Last