The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
Pascal’s Triangle in Pascal in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 1st Lydxn 🇨🇦 1,000 111 25ms 13 Jul 2021 1st m-tkach 🇺🇦 1,000 111 26ms 23 May 2022 1st error256 1,000 111 24ms 10 May 2025 4th primo-ppcg 🇹🇭 991 112 25ms 28 Apr 2023 5th emplv 🇱🇻 965 115 27ms 12 Jul 2021 5th prplz 🇦🇺 965 115 23ms 2 May 2022 5th sean-niemann 🇺🇸 965 115 25ms 16 Jan 2024 5th DialFrost 🇸🇬 965 115 26ms 23 Dec 2024 5th edsrzf 🇳🇿 965 115 26ms 31 Dec 2025 10th MeWhenI 🇻🇦 957 116 24ms 27 Dec 2022 10th Steffan153 🇫🇮 957 116 24ms 23 Feb 2023 10th roelderickx 957 116 26ms 6 days ago 13th pardouin 🇫🇷 949 117 25ms 10 Sep 2024 14th speles 🇺🇦 941 118 25ms 9 Nov 2023 14th jared-hughes 941 118 26ms 27 Feb 2024 16th andersk 🇺🇸 933 119 24ms 23 Nov 2022 17th Shanethegamer 🇺🇸 925 120 25ms 19 Mar 2023 17th janAkali 🇷🇺 925 120 26ms 5 Feb 2026 19th fuzzylojik-golf 🇺🇸 917 121 26ms 50 mins ago 20th annaproxy 910 122 24ms 13 Feb 2022 20th BREMAUCY 🇫🇷 910 122 25ms 5 May 2024 20th dokutan 910 122 26ms 24 Nov 2025 20th tomh1012 910 122 25ms 17 Feb 2026 24th arjanadriaanse 🇳🇱 902 123 25ms 12 Feb 2022 24th ndren 902 123 24ms 31 Jul 2023 24th weliveinhell 🇭🇹 902 123 24ms 26 Sep 2023 27th blaztoma 🇱🇹 895 124 25ms 6 Sep 2025 28th neihousaigaai 888 125 25ms 11 Jun 2022 28th 5cw 🇺🇸 888 125 24ms 5 Nov 2024 28th CornerMercury 🇬🇧 888 125 26ms 7 Jan 2026 31st zakariamouhid 881 126 24ms 10 Jan 2023 31st AlephSquirrel 881 126 26ms 8 Sep 2024 33rd aliakseikalosha 854 130 24ms 22 Apr 2022 34th madex 🇩🇪 847 131 26ms 6 days ago 35th Yewzir 🇧🇪 835 133 25ms 28 Mar 2024 36th janbehrens 🇩🇪 828 134 25ms 8 Jul 2021 37th yzhs 🇩🇪 822 135 25ms 10 Jul 2022 38th jupj 🇫🇮 816 136 25ms 14 Oct 2022 39th gigaprofisi 🇺🇸 810 137 26ms 4 Jul 2025 40th Betuaredead 799 139 25ms 15 Jan 2023 41st ericlangedijk 🇸🇮 787 141 24ms 5 Mar 2022 42nd kmathis22 776 143 25ms 10 Oct 2025 42nd albanian-laundromat 776 143 27ms 13 Nov 2025 44th Babafaba 750 148 27ms 24 Oct 2025 44th JOrE20 750 148 26ms 14 Feb 2026 46th SirBogman 🇺🇸 725 153 25ms 13 Mar 2022 47th arctouch-cristiannevianna 721 154 25ms 1 Aug 2023 48th duckyluuk 🇳🇱 716 155 25ms 27 Aug 2025 49th pyrolitic 🇮🇪 694 160 25ms 5 Apr 2022 49th emgordon154 694 160 25ms 12 Nov 2024 51st jakobkordez 🇸🇮 669 166 24ms 23 Oct 2022 52nd Laksen 🇩🇰 661 168 25ms 8 Jul 2021 53rd Matgc04 657 169 25ms 31 May 2023 54th PowershellKnut 🇳🇴 631 176 24ms 3 Feb 2023 55th cure-honey 🇯🇵 624 178 24ms 11 Jul 2021 56th eiburns 620 179 25ms 24 Jan 2023 57th neel11235813 607 183 25ms 15 Feb 2023 57th 2022dyx 607 183 27ms 13 Jul 2024 59th Tsuk1w 🇫🇷 597 186 24ms 15 Oct 2022 59th adriweb 🇫🇷 597 186 25ms 17 Aug 2023 61st snoozingnewt 🇨🇦 590 188 26ms 1 Oct 2025 62nd Andriamanitra 🇫🇮 587 189 25ms 5 May 2023 62nd staufga0 587 189 25ms 10 Jan 2024 64th Bonjour27891 🇻🇳 584 190 24ms 4 Mar 2022 65th msbranicky 563 197 25ms 3 Jan 2024 66th heanyang1 544 204 25ms 20 May 2025 67th roguh 🇬🇹 509 218 26ms 23 Jan 2024 68th rifatx 493 225 25ms 19 Jul 2024 69th InigoK 🇺🇸 483 230 25ms 21 Sep 2025 70th aksyristos 446 249 25ms 20 Oct 2022 71st JunkIce 435 255 26ms 13 Mar 2025 72nd kevinnaviapaiva 427 260 25ms 6 Mar 2025 73rd elisherer 🇮🇱 420 264 57ms 5 Jun 2022 74th atazzam 🇺🇸 380 292 25ms 14 Sep 2022 75th Zach1031 329 337 26ms 20 Nov 2025 76th wearsunscreen 320 347 25ms 26 Oct 2023 77th Natanaelel 🇸🇪 281 395 25ms 7 Feb 2023 78th GolfGPT 280 396 25ms 19 Nov 2023 79th AidanWalter 257 432 26ms 2 Jan 2025 80th scpchicken 🇵🇼 253 439 26ms 12 Feb 2022 1–80 of 113 Next Last