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?
Recamán 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 719th itsjustfreekie 796 75 11ms 22 Sep 2021 719th amollberg 🇸🇪 796 75 10ms 27 Jan 2022 719th NerdyMcNerd42 796 75 9ms 13 Aug 2022 719th MaxElf999 796 75 16ms 3 Oct 2022 719th LeeCamp 796 75 10ms 13 Jan 2023 719th hiichbindermax 796 75 11ms 17 Feb 2023 719th mbittner20 796 75 10ms 27 May 2023 719th ImpressedByRocks 796 75 17ms 17 May 2024 719th Bulmenisaurus 796 75 10ms 4 Nov 2024 719th bltnppcnt 796 75 19ms 5 Jan 2025 719th 40fied4t 796 75 11ms 22 May 2025 719th Andrey2001 796 75 17ms 9 Dec 2025 733rd frankgraziano 796 205 12ms 1 Nov 2025 734th weliveinhell 🇭🇹 794 130 300ms 26 Sep 2023 735th Irratix 🇳🇱 793 78 1ms 15 Jan 2021 735th MeWhenI 🇻🇦 793 78 143ms 17 Nov 2022 737th Liibe 792 109 373ms 2 Oct 2025 738th MeWhenI 🇻🇦 791 59 5ms 29 May 2023 739th stefangimmillaro 791 83 37ms 6 May 2023 740th argusdusty 🇺🇸 790 108 122ms 27 Dec 2020 741st Mabeloid 🇳🇴 788 82 1ms 22 Oct 2025 741st zgialor-lab 788 82 2ms 27 Feb 2026 743rd MeWhenI 🇻🇦 788 113 29ms 7 Jun 2023 744th Yewzir 🇧🇪 788 132 32ms 6 days ago 745th voytxt 🇨🇿 787 61 138ms 22 Aug 2024 745th DialFrost 🇸🇬 787 61 139ms 22 Aug 2024 747th Alessandro-Balconi 🇮🇹 787 62 89ms 14 Jul 2023 748th Sp3000 🇦🇺 786 38 3ms 29 Apr 2021 749th ArmaanAS 786 63 11ms 4 Apr 2021 750th MarcMush 🇫🇷 786 66 336ms 6 Jul 2021 750th Shanethegamer 🇺🇸 786 66 236ms 20 Apr 2023 752nd tomh1012 785 76 10ms 3 Mar 2021 752nd gilufin 785 76 11ms 23 Jun 2021 752nd Mikey-Beep 🇬🇧 785 76 10ms 6 Oct 2022 752nd DrPiranoid 785 76 10ms 7 Oct 2022 752nd Troon 785 76 26ms 14 Oct 2022 752nd adamnielson42 🇺🇸 785 76 10ms 25 Apr 2023 752nd ssbhatt4321 785 76 16ms 14 Oct 2023 752nd m42km 785 76 16ms 17 Jan 2024 752nd elgan65536 🇺🇸 785 76 11ms 30 Mar 2024 752nd Schreipfelerer 785 76 10ms 26 Sep 2024 762nd codereport 🇨🇦 784 52 37ms 21 Apr 2025 763rd TaserTheFox 🇺🇸 784 54 246ms 6 Jun 2023 764th commandz0 🇺🇸 784 69 446ms 1 Sep 2025 764th TheZwierzLF 🇵🇱 784 69 449ms 24 Nov 2025 766th DialFrost 🇸🇬 784 175 1,627ms 18 Jan 2026 767th ovs-code 🇩🇪 783 56 1,357ms 25 Jan 2024 767th emgordon154 783 56 1,279ms 18 Nov 2024 769th annaproxy 783 105 368ms 3 Oct 2023 770th HumanEquivalentUnit 781 87 14ms 1 Dec 2023 771st neihousaigaai 779 83 1ms 7 Apr 2021 772nd syntax-rules 778 108 446ms 11 Jan 2023 773rd janbehrens 🇩🇪 776 53 4ms 10 May 2021 774th snoozingnewt 🇨🇦 775 63 82ms 5 Feb 2026 775th fynnkroeger 775 77 10ms 10 Jan 2021 775th asadullayev 775 77 11ms 4 Mar 2021 775th PYRiTEmonark 775 77 10ms 22 May 2021 775th schachmattmatt 775 77 10ms 20 Aug 2021 775th RandGuy 775 77 9ms 4 May 2022 775th P-Quentin 🇫🇷 775 77 25ms 3 Aug 2022 775th ValentinCassayre 775 77 10ms 10 Oct 2022 775th IshanPanpaliya 775 77 10ms 19 Oct 2022 775th dzshn 775 77 10ms 3 Dec 2022 775th KenanHanke 775 77 10ms 25 Feb 2023 775th namelessiw 775 77 30ms 11 Jan 2024 775th NickTheEASDude 🇺🇸 775 77 16ms 1 May 2024 775th dokutan 775 77 17ms 7 Jun 2025 788th Mezzofloat 775 106 360ms 5 Sep 2023 788th michelebastione 🇮🇹 775 106 446ms 10 days ago 790th Mabeloid 🇳🇴 775 110 119ms 31 Oct 2025 791st akshatj27 🇦🇶 774 64 9ms 11 Jan 2022 791st KatieLG 🇬🇧 774 64 10ms 8 Apr 2022 791st two-bad 🇬🇧 774 64 9ms 23 Feb 2024 791st emgordon154 774 64 9ms 15 Nov 2024 791st smclaughlin-cf 774 64 10ms 13 May 2025 791st Lv0Sys 🇵🇱 774 64 10ms 4 Dec 2025 797th Yewzir 🇧🇪 773 80 142ms 16 May 2023 798th UnderKoen 🇳🇱 773 129 3ms 20 Jan 2025 799th Babafaba 772 70 471ms 6 Nov 2025 800th ovs-code 🇩🇪 772 202 13ms 31 Mar 2023 First Prev 721–800 of 2,060 Next Last