The Hilbert Curve hole will go live in approximately 2 days. Why not try and solve it ahead of time?
Catalan’s Constant 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 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 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 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 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 Chars Time 226th ovs-code 🇩🇪 758 227 22 Oct 2024 227th GrayJoKing 🇦🇺 756 60 3 Jun 2022 227th ovs-code 🇩🇪 756 60 21 Jul 2024 229th SirBogman 🇺🇸 755 62 23 Jan 2024 230th Yewzir 🇧🇪 755 259 19 Dec 2024 231st DialFrost 🇸🇬 752 85 27 Aug 2023 232nd TFeld00 🇩🇰 751 79 26 Apr 2022 232nd FlorianCassayre 🇫🇷 751 79 26 Sep 2023 234th tomtheisen 🇺🇸 750 150 10 Jan 2023 235th DialFrost 🇸🇬 747 108 31 Oct 2023 236th Shanethegamer 🇺🇸 745 107 26 May 2022 237th MeWhenI 🇻🇦 743 61 24 Aug 2022 238th elgan65536 740 248 11 Nov 2023 239th Steffan153 🇫🇮 737 135 18 Feb 2024 240th acotis 737 249 29 Jun 2025 241st MeWhenI 🇻🇦 735 87 2 Jan 2022 241st didion0 🇺🇸 735 87 25 Jan 2022 243rd CLOStrophobic 🇮🇹 734 128 22 Feb 2025 244th CornerMercury 🇬🇧 732 81 14 Feb 2025 244th 5cw 🇺🇸 732 81 30 hours ago 246th emplv 🇱🇻 732 136 7 Dec 2022 247th nwellnhof 🇩🇪 731 62 2 Jan 2022 248th lynn 727 104 14 Apr 2023 249th MeWhenI 🇻🇦 727 706 28 Nov 2023 250th primo-ppcg 🇹🇭 724 79 30 Jan 2022 251st DialFrost 🇸🇬 724 88 7 Jun 2024 252nd anter69 🇭🇺 723 82 13 Feb 2024 252nd duckyluuk 🇳🇱 723 82 15 Aug 2024 252nd emgordon154 723 82 3 Jul 2025 255th albanian-laundromat 723 206 25 Jun 2025 256th clockworknazo 721 112 30 Oct 2023 257th dokutan 719 207 27 Mar 2024 258th ovs-code 🇩🇪 718 78 14 Feb 2025 259th m-tkach 🇺🇦 718 263 20 Jun 2022 260th DialFrost 🇸🇬 716 276 6 May 2024 261st primo-ppcg 🇹🇭 714 58 14 Jan 2022 262nd nwellnhof 🇩🇪 714 83 6 Jan 2022 262nd commandblockguy 🇺🇸 714 83 22 Aug 2023 262nd zacjl 714 83 21 Apr 2025 265th MeWhenI 🇻🇦 713 209 10 Sep 2022 265th m-tkach 🇺🇦 713 209 26 Oct 2022 267th dokutan 710 63 26 Mar 2023 268th SirBogman 🇺🇸 708 64 24 Jan 2024 269th Yewzir 🇧🇪 704 270 27 Dec 2023 270th emgordon154 702 81 3 Jul 2025 271st MeWhenI 🇻🇦 701 142 15 Oct 2022 272nd emplv 🇱🇻 700 80 29 Oct 2024 273rd error256 699 100 14 Feb 2025 274th duckyluuk 🇳🇱 694 82 29 Aug 2024 275th MeWhenI 🇻🇦 692 177 17 Nov 2022 276th rucin93 🇵🇱 691 81 22 Aug 2024 277th lynn 690 86 2 Jan 2022 277th fkantelberg 690 86 18 Jul 2025 279th Yewzir 🇧🇪 690 216 18 Jan 2024 280th stefangimmillaro 687 145 18 Oct 2023 281st sisyphus-ppcg 🇦🇺 685 90 13 Jan 2023 282nd NewDefectus 🇮🇱 682 87 5 Jan 2022 283rd MeWhenI 🇻🇦 681 239 5 Feb 2022 283rd dokutan 681 239 1 Jul 2025 285th MeWhenI 🇻🇦 678 94 14 Jul 2024 286th MeWhenI 🇻🇦 675 234 26 Aug 2023 287th stefangimmillaro 674 88 30 Dec 2024 288th snoozingnewt 🇺🇸 667 67 9 Sep 2024 289th Shanethegamer 🇺🇸 666 96 26 May 2022 290th Kacarott 🇦🇺 666 105 13 Sep 2024 291st annaproxy 663 114 28 Jan 2022 291st TrueBoxGuy 663 114 15 Jul 2023 293rd bricknellj 659 90 6 Mar 2023 293rd croc54 659 90 27 Nov 2024 293rd MeWhenI 🇻🇦 659 90 23 Apr 2025 296th ovs-code 🇩🇪 657 192 25 May 2023 297th MeWhenI 🇻🇦 656 94 16 Apr 2023 298th SirBogman 🇺🇸 654 87 24 Jan 2024 298th Steffan153 🇫🇮 654 87 19 Feb 2024 300th GrayJoKing 🇦🇺 652 97 26 May 2022 Prev 226–300 of 1,619 Next