The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Pascal’s Triangle in all languages in chars. 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 Chars Time Submitted 693rd hellwue 842 58 11ms 25 Jun 2024 693rd 051 🇸🇬 842 58 10ms 1 Aug 2024 693rd EnTerr 842 58 10ms 1 Sep 2024 693rd hiichbindermax 842 58 10ms 5 Sep 2024 693rd ImpressedByRocks 842 58 11ms 10 Dec 2024 693rd klixel 🇨🇦 842 58 10ms 17 Jan 2025 693rd BREMAUCY 🇫🇷 842 58 10ms 15 Feb 2025 693rd vgamula 🇺🇦 842 58 10ms 17 Jul 2025 693rd ahmetdemirag 🇨🇾 842 58 11ms 1 Oct 2025 693rd jacekwladzinski 842 58 10ms 4 Oct 2025 693rd solisolu 842 58 11ms 8 Nov 2025 693rd Languag3 842 58 11ms 5 Dec 2025 693rd FortuiteMan 🇫🇷 842 58 10ms 6 Dec 2025 693rd SectorCorruptor 842 58 11ms 10 Feb 2026 735th Shanethegamer 🇺🇸 840 69 1ms 9 Oct 2023 736th HumanoidCPU 840 90 126ms 15 Jun 2024 737th frankgraziano 840 207 11ms 12 Oct 2025 738th pardouin 🇫🇷 839 52 140ms 2 Mar 2025 739th DialFrost 🇸🇬 839 68 6ms 23 Feb 2026 740th stefangimmillaro 839 91 442ms 6 Oct 2025 741st kg583 🇺🇸 838 63 5ms 2 Oct 2024 741st CLOStrophobic 🇮🇹 838 63 5ms 4 Feb 2025 743rd sean-niemann 🇺🇸 838 79 114ms 20 May 2024 744th blaztoma 🇱🇹 838 124 25ms 6 Sep 2025 744th emgordon154 838 124 26ms 11 mins ago 746th primo-ppcg 🇹🇭 837 79 112ms 6 Jul 2019 747th typeswitch-dev 🇵🇹 836 61 3ms 1 Sep 2023 748th janbehrens 🇩🇪 835 58 4ms 30 May 2021 749th jared-hughes 835 95 71ms 2 Nov 2022 750th Yewzir 🇧🇪 835 120 289ms 28 Mar 2024 751st primo-ppcg 🇹🇭 834 45 261ms 9 Jun 2020 751st prplz 🇦🇺 834 45 243ms 9 Jul 2021 753rd edsrzf 🇳🇿 834 50 4ms 24 Dec 2025 754th DialFrost 🇸🇬 834 68 39ms 25 Apr 2025 754th stefangimmillaro 834 68 39ms 26 Apr 2025 754th MeWhenI 🇻🇦 834 68 39ms 29 Apr 2025 754th primo-ppcg 🇹🇭 834 68 37ms 29 Apr 2025 758th m-tkach 🇺🇦 834 96 30ms 18 Jan 2024 759th MeWhenI 🇻🇦 833 18 2ms 19 Jan 2022 759th ashtraypettingzoo 🇺🇸 833 18 2ms 24 Feb 2023 759th lifthrasiir 🇰🇷 833 18 2ms 1 Dec 2024 762nd Shanethegamer 🇺🇸 833 59 1,266ms 11 Mar 2023 762nd anter69 🇭🇺 833 59 1,321ms 11 Jul 2025 764th lynn 833 71 10ms 17 Nov 2021 764th Shanethegamer 🇺🇸 833 71 156ms 2 Feb 2022 766th dokutan 832 59 1,016ms 22 Sep 2025 767th tayloia 🇬🇧 832 60 11ms 21 Dec 2017 767th p01 832 60 10ms 3 Jan 2018 767th jakobwitte 832 60 12ms 16 Apr 2018 767th ETHproductions 🇺🇸 832 60 9ms 7 May 2018 767th thisishowmymindworks 🇳🇴 832 60 10ms 16 Sep 2020 767th niklv 🇷🇺 832 60 10ms 6 Jan 2024 767th targrik 832 60 9ms 27 Apr 2025 767th SirBogman 🇺🇸 832 60 10ms 4 Oct 2025 775th Steffan153 🇫🇮 832 68 87ms 1 Nov 2023 775th albanian-laundromat 832 68 79ms 20 Nov 2025 777th neihousaigaai 832 125 25ms 11 Jun 2022 777th 5cw 🇺🇸 832 125 24ms 5 Nov 2024 777th CornerMercury 🇬🇧 832 125 26ms 7 Jan 2026 780th prplz 🇦🇺 831 74 2ms 9 Jul 2021 781st cure-honey 🇯🇵 830 46 246ms 15 Jul 2021 781st janbehrens 🇩🇪 830 46 264ms 2 Nov 2021 781st czylabsonasa 🇭🇺 830 46 272ms 19 Jun 2022 781st Codsilla 🇨🇦 830 46 267ms 3 Jul 2022 781st Shanethegamer 🇺🇸 830 46 263ms 22 Apr 2023 781st alemelis 830 46 262ms 21 Feb 2024 781st error256 830 46 276ms 11 May 2025 781st denkyuu1 830 46 254ms 16 Feb 2026 789th Shanethegamer 🇺🇸 830 91 129ms 11 Mar 2023 790th namelessiw 830 92 386ms 2 Oct 2025 790th HumanoidCPU 830 92 444ms 8 Nov 2025 792nd GrayJoKing 🇦🇺 829 54 404ms 15 Jan 2024 792nd inventshah 829 54 408ms 16 Jan 2024 792nd m-tkach 🇺🇦 829 54 404ms 20 Jan 2024 792nd lynn 829 54 417ms 17 Feb 2024 792nd MeWhenI 🇻🇦 829 54 470ms 13 Jul 2024 792nd duckyluuk 🇳🇱 829 54 415ms 28 Aug 2024 792nd albanian-laundromat 829 54 369ms 4 Aug 2025 792nd Babafaba 829 54 415ms 30 Oct 2025 792nd CaedenHarper 🇨🇦 829 54 382ms 5 Dec 2025 First Prev 721–800 of 3,048 Next Last