The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 days. Why not try and solve them ahead of time?
Pascal’s Triangle in Python 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 556th bwenstar 481 104 10ms 11 Aug 2022 556th atazzam 🇺🇸 481 104 10ms 14 Sep 2022 556th qwjhvbxi 481 104 10ms 13 Feb 2024 556th nullpointerfoo 481 104 9ms 8 Jun 2024 556th sciencedjinn 481 104 10ms 8 Nov 2024 566th moshiba 476 105 10ms 18 Apr 2018 566th nctsiridis 476 105 9ms 4 Apr 2021 566th Ted-Barrett 🇦🇺 476 105 11ms 30 Sep 2021 566th KenanHanke 476 105 80ms 19 Feb 2023 570th siegelzero 472 106 94ms 24 Jan 2020 570th davidludwik2370 472 106 10ms 27 Jul 2025 572nd MH2520 467 107 10ms 10 Sep 2018 572nd Pena86 467 107 10ms 19 Feb 2021 572nd Gosefu 467 107 10ms 10 Apr 2022 575th adesanjo 459 109 10ms 8 Jun 2019 575th ianpoe 459 109 9ms 29 Mar 2020 575th harrymwilkins 🇬🇧 459 109 9ms 19 Jul 2021 578th The3gs 455 110 10ms 13 Oct 2020 578th twocatsinatrenchcoat 455 110 9ms 16 May 2022 578th ms-tingliang 455 110 10ms 5 Aug 2022 578th AZ9tumas 455 110 10ms 11 Oct 2022 582nd bobbysq 450 111 10ms 19 Jun 2023 583rd wilkij1 446 112 10ms 16 Jun 2018 583rd CRHillman 446 112 10ms 10 Aug 2018 583rd SimonPeatman 446 112 10ms 29 Dec 2018 583rd mathwiz42 446 112 10ms 17 Aug 2020 587th befoster 442 113 10ms 10 Apr 2021 587th RedGl0w 442 113 10ms 15 Aug 2023 587th Florian-Mt 442 113 10ms 30 Sep 2023 590th FJSFerreira 439 114 10ms 25 May 2021 590th Great-Gamer 439 114 10ms 24 Feb 2022 590th S-Ruban 439 114 10ms 25 Feb 2023 593rd danwley 435 115 10ms 24 Nov 2018 593rd Tsuk1w 🇫🇷 435 115 10ms 15 Oct 2022 593rd JakeDaCake36 435 115 11ms 19 Feb 2024 593rd GitQuick 435 115 9ms 8 Mar 2024 593rd TheAtrossian 435 115 11ms 5 Jan 2025 598th DarkTemplar5 431 116 10ms 23 Feb 2020 598th xkacer 🇨🇿 431 116 10ms 31 Jan 2021 598th 0dyse 431 116 11ms 14 Oct 2025 601st OpesMentis 427 117 9ms 22 Mar 2018 601st AforAmpere 427 117 10ms 21 Feb 2021 601st dillon-duncando 427 117 15ms 3 Dec 2021 601st mdnestor 427 117 122ms 23 Dec 2022 601st kellantech 427 117 9ms 9 Jul 2023 601st jstechman 427 117 9ms 9 Mar 2024 607th RobDover 417 120 9ms 5 Mar 2018 607th Very-Nerdy-Human 417 120 11ms 13 Jan 2024 609th epistemologist 410 122 9ms 28 Jul 2018 609th KiwiKoder0123 410 122 9ms 27 Jun 2019 609th stordev 410 122 111ms 26 Feb 2021 609th Omega65536 🇩🇪 410 122 63ms 23 Jun 2021 613th dahrens 407 123 16ms 10 Jul 2019 613th NoahBolohan 🇨🇦 407 123 9ms 7 Feb 2023 613th Fanrco 407 123 9ms 31 Aug 2023 613th m42km 407 123 10ms 6 Jan 2024 617th dddthedark 403 124 10ms 8 Mar 2018 617th redbeancola 403 124 10ms 9 Nov 2021 617th sleepyStick 403 124 10ms 2 Dec 2021 620th Foxinatel 400 125 107ms 22 Aug 2021 620th Kasci 400 125 112ms 7 Dec 2021 622nd evanrittner 397 126 85ms 11 Mar 2019 622nd Oples 397 126 11ms 30 Mar 2019 622nd wikwg9 397 126 10ms 29 Oct 2019 625th AgathokakologicalBit 391 128 61ms 25 Jul 2019 626th daniel-verdugo 388 129 165ms 12 Jun 2019 627th LukeRichardson-dev 376 133 16ms 24 May 2022 628th bbakersmith 373 134 9ms 18 Jul 2021 629th djtuBIG-MaliceX 368 136 10ms 1 Feb 2018 629th yoshykai 368 136 10ms 12 Apr 2025 631st benwilliamgraham 365 137 76ms 27 Jan 2019 631st estomagordo 🇳🇱 365 137 9ms 10 Dec 2021 633rd ComputerKWasTaken 🇺🇸 360 139 10ms 31 May 2024 634th Sticky-Bits 357 140 9ms 26 Apr 2019 634th brimstonetrader 357 140 71ms 10 Jan 2024 636th Tiger-Cross 355 141 10ms 22 May 2020 636th s-gannon 355 141 11ms 2 Dec 2021 638th kevinnaviapaiva 352 142 10ms 14 Feb 2025 639th Balaji-Jag 350 143 10ms 13 Nov 2019 640th ItsEthanDev 347 144 9ms 31 Aug 2023 First Prev 561–640 of 697 Next Last
