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 all languages 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 881st AlephSquirrel 820 75 1ms 13 May 2020 881st Steffan153 🇫🇮 820 75 2ms 23 Feb 2023 881st sean-niemann 🇺🇸 820 75 2ms 7 May 2024 881st inventshah 820 75 1ms 27 Mar 2025 885th efgen 819 61 11ms 12 Jun 2020 885th uttumuttu 🇫🇮 819 61 13ms 4 Jan 2022 885th KingSkyrock 🇺🇸 819 61 16ms 28 Jan 2022 885th dmrichwa 🇺🇸 819 61 11ms 4 Dec 2022 885th apreg 819 61 10ms 3 May 2023 885th duckyluuk 🇳🇱 819 61 10ms 4 Oct 2024 891st Shanethegamer 🇺🇸 818 63 6ms 23 Dec 2023 892nd rucin93 🇵🇱 817 71 2ms 18 Dec 2025 893rd edsrzf 🇳🇿 817 75 118ms 7 Dec 2025 894th yzhs 🇩🇪 817 81 109ms 15 Feb 2020 894th cbrt-x 817 81 114ms 18 Sep 2023 894th DialFrost 🇸🇬 817 81 116ms 4 Aug 2024 897th DialFrost 🇸🇬 817 213 11ms 14 Aug 2025 898th DialFrost 🇸🇬 816 27 38ms 15 Mar 2025 898th fuzzylojik-golf 🇺🇸 816 27 40ms 18 Sep 2025 898th CaedenHarper 🇨🇦 816 27 39ms 6 Oct 2025 898th blaztoma 🇱🇹 816 27 39ms 19 Jan 2026 902nd GrayJoKing 🇦🇺 816 79 2ms 11 Sep 2022 903rd emgordon154 815 70 6ms 19 days ago 904th adamnielson42 🇺🇸 813 32 2ms 10 Jan 2024 905th Steffan153 🇫🇮 813 53 1ms 20 Jul 2024 906th edsrzf 🇳🇿 813 65 6ms 28 Oct 2025 907th annaproxy 813 89 412ms 11 Apr 2025 908th MeWhenI 🇻🇦 811 73 2,575ms 24 Oct 2024 908th sean-niemann 🇺🇸 811 73 2,654ms 24 Oct 2024 908th Shanethegamer 🇺🇸 811 73 2,774ms 28 Oct 2024 911th joshrosenkranz 810 65 10ms 2 Mar 2018 911th tjtnorton 810 65 10ms 1 Apr 2019 911th sevinon 810 65 9ms 9 Nov 2019 911th hjcafaroUC 810 65 9ms 29 Jul 2020 911th Bodo171 810 65 10ms 7 Dec 2022 911th M0PKOBKA 810 65 9ms 5 Jan 2023 911th 0xjac 🇨🇭 810 65 11ms 25 Nov 2025 911th TheZwierzLF 🇵🇱 810 65 10ms 7 Dec 2025 919th Attero 🇸🇪 809 76 2ms 24 May 2020 919th jared-hughes 809 76 2ms 2 Nov 2022 921st DialFrost 🇸🇬 808 87 466ms 13 Nov 2025 922nd dzove855 807 31 100ms 4 Jan 2018 922nd lvenier 807 31 103ms 4 Jan 2018 922nd Malgosiek 807 31 103ms 21 Oct 2018 922nd SchHolmes 807 31 102ms 21 Oct 2018 922nd lazarow 807 31 106ms 21 Oct 2018 922nd maciejdabrowski94 807 31 104ms 21 Oct 2018 922nd ZippyMagician 807 31 100ms 8 Jun 2020 922nd Attero 🇸🇪 807 31 96ms 18 Oct 2020 922nd rvdnieuwendijk 🇳🇱 807 31 102ms 20 Oct 2020 922nd rucin93 🇵🇱 807 31 104ms 8 Dec 2020 922nd neel11235813 807 31 104ms 3 Feb 2023 933rd edsrzf 🇳🇿 807 60 5ms 22 Sep 2024 933rd dokutan 807 60 5ms 4 Jul 2025 935th annaproxy 807 82 120ms 7 Feb 2022 935th netfri25 🇮🇱 807 82 117ms 19 Feb 2026 937th jared-hughes 806 62 9ms 8 Sep 2021 937th emgordon154 806 62 11ms 24 Dec 2021 937th idavidka 🇭🇺 806 62 9ms 24 Apr 2023 937th HumanoidCPU 806 62 9ms 15 Jun 2024 941st MeWhenI 🇻🇦 806 76 125ms 30 Jan 2023 942nd emgordon154 805 61 1,227ms 18 Nov 2024 943rd dokutan 805 72 1ms 6 Jun 2025 944th primo-ppcg 🇹🇭 805 82 90ms 20 Jan 2020 945th angel-p57 🇯🇵 805 232 1ms 3 Dec 2023 946th Yewzir 🇧🇪 804 61 1,067ms 16 Nov 2025 947th pardouin 🇫🇷 803 66 62ms 26 Aug 2024 947th GrayJoKing 🇦🇺 803 66 62ms 9 Dec 2025 949th dokutan 803 76 39ms 27 Apr 2025 950th Irratix 🇳🇱 802 99 445ms 3 Jan 2022 950th dokutan 802 99 423ms 14 Jul 2025 952nd apreg 802 125 303ms 26 Apr 2023 953rd davbass 🇮🇹 801 51 291ms 25 Aug 2023 954th commandz0 🇺🇸 801 57 424ms 15 Jan 2024 954th AlephSquirrel 801 57 383ms 16 Jan 2024 954th albanian-laundromat 801 57 445ms 4 Aug 2025 954th SirBogman 🇺🇸 801 57 391ms 2 Oct 2025 958th ovs-code 🇩🇪 800 60 143ms 3 Aug 2024 959th marcin7Cd 800 66 5ms 7 Feb 2021 959th AlephSquirrel 800 66 5ms 31 Jan 2025 First Prev 881–960 of 3,064 Next Last