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 598th targrik 880 110 248ms 30 Jun 2025 602nd Shanethegamer 🇺🇸 879 81 19ms 19 Dec 2023 602nd emgordon154 879 81 26ms 29 Jul 2025 604th GrayJoKing 🇦🇺 878 72 679ms 31 May 2022 604th Shanethegamer 🇺🇸 878 72 646ms 1 Jun 2022 604th Steffan153 🇫🇮 878 72 617ms 10 Dec 2022 607th ovs-code 🇩🇪 878 73 300ms 22 Jul 2023 608th steffan-polygolf 878 74 130ms 14 Feb 2024 609th primo-ppcg 🇹🇭 878 193 105ms 14 Aug 2025 610th Shanethegamer 🇺🇸 877 142 1,171ms 27 Mar 2025 610th DialFrost 🇸🇬 877 142 1,122ms 28 Mar 2025 610th emgordon154 877 142 1,348ms 10 Apr 2025 613th mousetail 🇳🇱 876 40 73ms 29 Aug 2025 614th Shanethegamer 🇺🇸 875 51 405ms 15 May 2023 615th Grrisly 875 74 4ms 25 Mar 2024 616th GrayJoKing 🇦🇺 875 84 53ms 19 Jun 2022 616th primo-ppcg 🇹🇭 875 84 48ms 29 Jun 2022 618th rucin93 🇵🇱 874 57 139ms 4 Aug 2024 618th dokutan 874 57 130ms 9 Aug 2024 620th c0d3-4-F00d 🇩🇪 874 61 9ms 6 May 2022 620th jackkav 874 61 10ms 26 Jun 2022 620th TechNolaByte 874 61 10ms 6 Jul 2022 620th Heathcorp 🇦🇺 874 61 10ms 17 Jul 2022 620th C0de5mith 🇺🇸 874 61 10ms 3 Aug 2022 620th sebipopa 🇷🇴 874 61 11ms 18 Aug 2022 620th moikaturns 🇬🇧 874 61 11ms 25 Sep 2022 620th FlorianCassayre 🇫🇷 874 61 11ms 27 Sep 2022 620th Mazn3k 874 61 10ms 1 Feb 2023 620th tvcv901 874 61 10ms 22 Mar 2023 620th unfinishedprogram 874 61 10ms 19 Jul 2023 620th snoozingnewt 🇺🇸 874 61 11ms 23 Sep 2023 620th funnyboy-roks 874 61 9ms 9 May 2024 620th bac0id 874 61 11ms 29 Jun 2024 620th madex 🇩🇪 874 61 11ms 9 Jul 2024 620th FortuiteMan 🇫🇷 874 61 10ms 10 Oct 2024 620th RobertHoeh 874 61 10ms 5 Apr 2025 620th LvLError 874 61 10ms 29 May 2025 620th Lv0Sys 🇵🇱 874 61 10ms 30 May 2025 620th miles-evan 874 61 10ms 5 Aug 2025 620th alexsave 874 61 14ms 13 Oct 2025 641st snoozingnewt 🇺🇸 874 95 341ms 8 Oct 2025 642nd NerdyMcNerd42 873 64 20ms 26 Oct 2022 642nd tpasfieldERAU 873 64 25ms 14 Nov 2022 642nd CheeseCake628 🇳🇴 873 64 22ms 6 Jan 2023 642nd adamnielson42 🇺🇸 873 64 22ms 25 Apr 2023 642nd nathsou 🇫🇷 873 64 21ms 2 Sep 2023 642nd zwxzwxzwx21 873 64 24ms 30 Jan 2024 642nd steffan-polygolf 873 64 21ms 8 Mar 2024 642nd Jacob385 873 64 62ms 4 Apr 2024 642nd gallium-gonzollium 873 64 28ms 26 Aug 2024 651st johnnythedoggie 873 72 88ms 13 May 2022 651st kaascevich 873 72 81ms 8 Jul 2025 653rd DialFrost 🇸🇬 873 73 100ms 3 Jun 2025 654th HPWiz 🇳🇿 872 49 259ms 4 May 2022 654th JayXon 🇺🇸 872 49 274ms 5 May 2022 654th Steffan153 🇫🇮 872 49 303ms 10 Dec 2022 654th ovs-code 🇩🇪 872 49 407ms 24 Oct 2023 654th sean-niemann 🇺🇸 872 49 254ms 12 Jul 2024 659th dokutan 872 62 5ms 28 Apr 2025 660th Shanethegamer 🇺🇸 872 66 189ms 4 May 2022 660th scpchicken 🇵🇼 872 66 328ms 5 May 2022 660th sisyphus-ppcg 🇦🇺 872 66 170ms 6 May 2022 660th Natanaelel 🇸🇪 872 66 159ms 15 Jun 2022 660th Z-snails 872 66 339ms 27 Feb 2023 660th Jeremy-Stafford 872 66 333ms 27 Feb 2023 660th alomiF 872 66 367ms 1 Sep 2023 660th btnlq 872 66 144ms 17 Oct 2023 668th DialFrost 🇸🇬 872 86 49ms 24 Oct 2024 668th stefangimmillaro 872 86 49ms 14 Jan 2025 670th c0d3-4-F00d 🇩🇪 872 89 344ms 5 May 2022 670th fkantelberg 872 89 401ms 15 Jul 2023 670th bac0id 872 89 363ms 26 Sep 2023 670th TRexOnGit 872 89 360ms 16 Feb 2024 674th nwellnhof 🇩🇪 872 111 262ms 4 May 2022 674th stefangimmillaro 872 111 259ms 26 Sep 2023 First Prev 601–675 of 3,436 Next Last