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 Python 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 232nd KenanHanke 792 77 10ms 25 Feb 2023 232nd namelessiw 792 77 30ms 11 Jan 2024 232nd NickTheEASDude 🇺🇸 792 77 16ms 1 May 2024 232nd dokutan 792 77 17ms 7 Jun 2025 245th richard-oelze 🇩🇪 782 78 17ms 13 May 2021 245th Kloppermand 🇩🇰 782 78 17ms 29 Nov 2021 245th Omega65536 🇩🇪 782 78 9ms 24 Nov 2022 245th Fanrco 782 78 11ms 4 Sep 2023 245th Techdude01 782 78 10ms 11 Jan 2024 245th Mabeloid 🇳🇴 782 78 10ms 3 Oct 2024 245th JunkIce 782 78 17ms 3 Dec 2024 245th Alban-Boissard 782 78 11ms 14 Jun 2025 253rd Brianzhengca 772 79 17ms 2 Feb 2021 253rd feherd 772 79 10ms 4 Mar 2022 253rd petroselo 772 79 16ms 12 Apr 2022 253rd rowboat1 772 79 27ms 21 Jun 2022 253rd Ripick 772 79 10ms 13 Aug 2022 253rd Eilonlif 🇮🇱 772 79 17ms 7 Sep 2022 253rd jsthope 772 79 10ms 28 Sep 2022 253rd QuincyNash 🇺🇸 772 79 10ms 29 Nov 2022 253rd celiendonze 🇨🇭 772 79 10ms 17 Apr 2023 253rd kaptsanovb 772 79 10ms 23 Sep 2023 253rd ridingqwerty 🇺🇸 772 79 10ms 5 Feb 2024 253rd zgialor-lab 772 79 10ms 27 Feb 2026 265th timchu 763 80 9ms 8 Mar 2021 265th jameslindesay 763 80 17ms 24 Mar 2021 265th AIn0n 763 80 10ms 8 Jul 2021 265th myleopard 763 80 9ms 13 Oct 2021 265th abba23 763 80 16ms 24 May 2022 265th alexjurkiewicz 🇦🇺 763 80 10ms 16 Jul 2022 265th PyryL 🇫🇮 763 80 10ms 25 Aug 2024 265th alemelis 763 80 11ms 17 Oct 2024 265th Europe2048 763 80 10ms 25 Nov 2024 265th jacekwladzinski 763 80 10ms 4 Oct 2025 275th itiievskyi 🇺🇦 753 81 10ms 5 Jan 2021 275th lmolteno 753 81 11ms 10 Mar 2021 275th 4ndyJ 🇬🇧 753 81 11ms 11 Jan 2023 275th Yewzir 🇧🇪 753 81 17ms 6 Apr 2023 275th codingisgreatbutiamnot 753 81 11ms 26 Aug 2024 275th yokasuretsu 753 81 10ms 6 Jan 2025 281st LlamaLad7 🇬🇧 744 82 10ms 17 Jan 2021 281st kyleclaassen 744 82 18ms 11 Mar 2022 281st vhoulbreque 🇫🇷 744 82 20ms 13 Aug 2022 281st msbranicky 744 82 10ms 10 Sep 2023 281st HumanEquivalentUnit 744 82 10ms 26 Nov 2023 281st markusgraube 744 82 17ms 3 May 2024 281st MassimoParisi 744 82 10ms 23 Sep 2024 281st DGipe 744 82 11ms 22 Oct 2025 289th estomagordo 🇳🇱 735 83 10ms 6 Dec 2021 289th markus-rekdal 735 83 16ms 23 May 2022 289th glesnick 735 83 17ms 17 Aug 2022 289th shibacho 🇯🇵 735 83 17ms 30 Nov 2022 289th Bodo171 735 83 10ms 8 Dec 2022 289th jiaminglimjm 🇲🇾 735 83 17ms 20 Mar 2023 289th yuchuehw 735 83 10ms 20 Jan 2024 289th WillConker 735 83 10ms 10 Mar 2024 289th AstroOrbis 735 83 10ms 10 Feb 2026 298th Re-Adventures 🇮🇳 726 84 10ms 22 Mar 2023 298th henrydukepickle 726 84 10ms 4 Dec 2023 298th Bit125 726 84 11ms 27 Mar 2024 298th 5quiwyrm 726 84 10ms 10 Dec 2024 298th clayboll99 726 84 10ms 14 Jul 2025 303rd hjcafaroUC 718 85 17ms 30 May 2021 303rd vodker1 718 85 17ms 8 Mar 2022 305th befoster 709 86 10ms 8 May 2021 305th ehulinsky 🇺🇸 709 86 17ms 10 Nov 2021 305th MarioPlq 709 86 17ms 24 Jun 2022 305th mdnestor 709 86 18ms 14 Dec 2022 305th Marsolo1 709 86 10ms 18 Apr 2023 305th Stockoh 🇫🇷 709 86 19ms 2 Oct 2024 305th WillowWispy 709 86 11ms 18 Mar 2025 305th Code-Coder-coder 709 86 10ms 10 Feb 2026 313th trist224 🇫🇷 701 87 42ms 1 Sep 2022 313th PaulMWeiser 701 87 9ms 4 Mar 2023 313th wuzekai518 701 87 17ms 23 Jul 2024 313th csharpython 701 87 10ms 24 Aug 2025 317th NoahBolohan 🇨🇦 693 88 10ms 7 Mar 2023 317th TimLeffke 693 88 9ms 2 Jan 2024 319th cole-wilson 685 89 10ms 21 Feb 2021 319th redbeancola 685 89 28ms 11 Oct 2021 First Prev 241–320 of 439 Next Last