The Hilbert Curve hole will go live in approximately 3 days. Why not try and solve it ahead of time?
Topological Sort 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 1st 2bular 1,000 29 12 Jul 2025 1st ovs-code 🇩🇪 1,000 29 14 Jul 2025 3rd canissimia 🇦🇶 940 43 13 Jul 2025 4th Mukundan314 940 95 10 Jul 2025 5th saito-ta 🇯🇵 934 41 30 Jul 2025 6th nwellnhof 🇩🇪 921 62 13 days ago 7th ovs-code 🇩🇪 909 51 14 Jul 2025 8th Mukundan314 907 86 10 Jul 2025 9th saito-ta 🇯🇵 904 53 12 Jul 2025 9th canissimia 🇦🇶 904 53 13 Jul 2025 11th canissimia 🇦🇶 903 90 17 Jul 2025 12th 4atj 902 99 21 Jul 2025 13th lukegustafson 🇺🇸 893 91 17 Jul 2025 13th nwellnhof 🇩🇪 893 91 26 days ago 15th kg583 🇺🇸 893 100 10 Jul 2025 16th nwellnhof 🇩🇪 887 58 23 days ago 17th nwellnhof 🇩🇪 884 101 13 days ago 18th pardouin 🇫🇷 877 75 23 days ago 19th m-tkach 🇺🇦 875 102 12 Jul 2025 20th kg583 🇺🇸 867 90 10 Jul 2025 21st canissimia 🇦🇶 866 76 13 Jul 2025 22nd Shanethegamer 🇺🇸 865 89 20 days ago 22nd antimon2 🇯🇵 865 89 13 days ago 24th m-tkach 🇺🇦 865 94 17 Jul 2025 25th nwellnhof 🇩🇪 860 86 25 days ago 26th saito-ta 🇯🇵 859 142 26 days ago 27th lukegustafson 🇺🇸 858 104 20 Jul 2025 28th AdrienHache 🇫🇷 856 135 26 days ago 29th zacjl 853 34 26 Jul 2025 30th Natanaelel 🇸🇪 852 67 12 Jul 2025 31st Shanethegamer 🇺🇸 851 132 19 days ago 32nd ovs-code 🇩🇪 847 144 24 Jul 2025 33rd emgordon154 843 112 27 days ago 34th kg583 🇺🇸 843 135 3 days ago 35th KasperKivimaeki 🇫🇮 841 145 23 days ago 36th ovs-code 🇩🇪 840 68 11 Jul 2025 37th saito-ta 🇯🇵 840 99 26 days ago 38th edsrzf 🇳🇿 839 121 9 days ago 39th Shanethegamer 🇺🇸 838 102 19 days ago 40th edsrzf 🇳🇿 837 158 9 days ago 41st Shanethegamer 🇺🇸 836 205 15 days ago 42nd ovs-code 🇩🇪 833 110 12 Jul 2025 43rd snyderek 🇺🇸 833 178 13 days ago 44th edsrzf 🇳🇿 832 143 11 days ago 45th edsrzf 🇳🇿 832 206 13 days ago 46th m-tkach 🇺🇦 830 94 12 Jul 2025 46th pardouin 🇫🇷 830 94 13 Jul 2025 48th albanian-laundromat 830 148 21 days ago 49th pardouin 🇫🇷 826 108 13 Jul 2025 49th bizy-coder 826 108 25 Jul 2025 49th zacjl 826 108 26 Jul 2025 52nd edsrzf 🇳🇿 823 133 12 days ago 53rd SirBogman 🇺🇸 822 90 19 days ago 54th edsrzf 🇳🇿 822 135 9 days ago 55th GolfingSuccess 🇬🇷 821 95 11 Jul 2025 56th edsrzf 🇳🇿 821 137 13 days ago 57th error256 821 138 20 days ago 58th IanUtley 816 155 27 days ago 59th Mukundan314 813 100 18 Jul 2025 60th snyderek 🇺🇸 813 150 13 days ago 61st Shanethegamer 🇺🇸 813 166 16 days ago 62nd edsrzf 🇳🇿 813 167 9 days ago 63rd edsrzf 🇳🇿 813 254 12 days ago 64th Seek64 🇩🇪 811 110 30 Jul 2025 65th Yax42 🇫🇷 808 143 10 days ago 66th Shanethegamer 🇺🇸 808 152 20 days ago 67th albanian-laundromat 808 190 10 days ago 68th Shanethegamer 🇺🇸 808 312 22 days ago 69th emgordon154 806 199 25 days ago 70th edsrzf 🇳🇿 805 208 14 days ago 71st pardouin 🇫🇷 804 71 23 days ago 72nd GolfingSuccess 🇬🇷 804 111 11 Jul 2025 73rd acotis 804 214 25 days ago 74th UnderKoen 🇳🇱 804 218 23 days ago 75th canissimia 🇦🇶 803 137 27 Jul 2025 1–75 of 255 Next