The Hilbert Curve hole will go live in approximately 3 days. Why not try and solve it ahead of time?
Collatz in all languages in bytes. 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 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 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 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 Knight 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 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 Knight 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 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 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 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 Bytes Time 376th ovs-code 🇩🇪 924 67 13 Dec 2022 376th Steffan153 🇫🇮 924 67 18 Dec 2022 376th Lydxn 🇨🇦 924 67 4 Feb 2023 376th sean-niemann 🇺🇸 924 67 7 Mar 2025 380th Bubbler-4 923 33 6 May 2022 380th rak1507 🇬🇧 923 33 8 May 2022 380th ngn 🇧🇬 923 33 11 May 2022 380th zacjl 923 33 3 Jun 2025 380th GrayJoKing 🇦🇺 923 33 4 Jun 2025 385th Lydxn 🇨🇦 923 90 6 May 2022 386th Luca2812 923 127 12 Dec 2022 386th h3ra993huskp 🇯🇵 923 127 17 Sep 2023 386th tigerdan2 🇩🇪 923 127 19 Dec 2023 386th Apataras 923 127 16 Jul 2025 390th nwellnhof 🇩🇪 922 51 4 May 2022 390th primo-ppcg 🇹🇭 922 51 6 May 2022 390th janlelis 922 51 10 May 2022 390th Natanaelel 🇸🇪 922 51 2 Jun 2022 394th uiamn 922 58 6 Sep 2022 394th 5quiwyrm 922 58 29 Sep 2022 394th alasdair-greenland 922 58 13 Jan 2023 394th kirjavascript 922 58 24 days ago 394th Posandu 922 58 2 days ago 399th btnlq 922 59 6 Nov 2022 400th Lydxn 🇨🇦 922 108 6 May 2022 400th JayXon 🇺🇸 922 108 9 May 2022 402nd MichalMarsalek 🇨🇿 921 71 5 May 2022 402nd Lydxn 🇨🇦 921 71 7 May 2022 402nd GrayJoKing 🇦🇺 921 71 8 May 2022 402nd JayXon 🇺🇸 921 71 8 May 2022 402nd Steffan153 🇫🇮 921 71 9 Mar 2023 402nd Shanethegamer 🇺🇸 921 71 15 May 2023 402nd MeWhenI 🇻🇦 921 71 8 Aug 2023 402nd sean-niemann 🇺🇸 921 71 9 Jan 2025 410th Herbert00709 🇵🇱 921 92 17 Nov 2023 410th 4QT0R 921 92 23 Nov 2023 410th ovs-code 🇩🇪 921 92 3 Jun 2024 413th xnor-gate 919 63 20 Jan 2025 414th Steffan153 🇫🇮 919 76 15 May 2023 414th primo-ppcg 🇹🇭 919 76 15 May 2023 414th Lydxn 🇨🇦 919 76 22 May 2023 414th GrayJoKing 🇦🇺 919 76 24 Aug 2023 418th primo-ppcg 🇹🇭 917 61 6 May 2022 418th sisyphus-ppcg 🇦🇺 917 61 14 Jul 2022 420th Lydxn 🇨🇦 917 70 7 May 2022 420th JayXon 🇺🇸 917 70 7 May 2022 422nd Steffan153 🇫🇮 916 71 14 Oct 2022 422nd Shanethegamer 🇺🇸 916 71 15 Oct 2022 422nd stefangimmillaro 916 71 16 Oct 2022 422nd MeWhenI 🇻🇦 916 71 16 Oct 2022 422nd Steffan153 🇫🇮 916 71 10 Dec 2022 422nd synt7x 🇺🇸 916 71 7 Jul 2025 428th annaproxy 916 79 24 Aug 2022 428th GrayJoKing 🇦🇺 916 79 28 Aug 2022 428th IanUtley 916 79 3 Nov 2023 428th Kacarott 🇦🇺 916 79 13 Jun 2024 432nd arctouch-cristiannevianna 916 85 3 Apr 2023 432nd tomtheisen 🇺🇸 916 85 10 Apr 2025 434th Natanaelel 🇸🇪 914 57 17 Jan 2024 434th Kacarott 🇦🇺 914 57 10 Sep 2024 436th Shanethegamer 🇺🇸 914 61 9 Oct 2023 436th edsrzf 🇳🇿 914 61 4 Jul 2025 438th JayXon 🇺🇸 914 79 5 Apr 2023 438th Lydxn 🇨🇦 914 79 9 Apr 2023 440th Steffan153 🇫🇮 914 81 11 Dec 2023 441st Shanethegamer 🇺🇸 914 87 15 May 2023 441st JayXon 🇺🇸 914 87 15 May 2023 441st Steffan153 🇫🇮 914 87 16 May 2023 441st Lydxn 🇨🇦 914 87 16 May 2023 441st GrayJoKing 🇦🇺 914 87 11 Aug 2023 441st sean-niemann 🇺🇸 914 87 11 Jul 2024 447th sean-niemann 🇺🇸 914 109 25 May 2024 447th CaedenHarper 🇨🇦 914 109 28 Jan 2025 449th pardouin 🇫🇷 913 72 21 May 2025 450th AdamHe17 913 73 31 May 2022 Prev 376–450 of 3,281 Next