The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 25 hours. Why not try and solve them ahead of time?
SI Units 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 1st btnlq 1,000 368 35ms 3 Apr 2023 2nd 5cw 🇺🇸 995 370 27ms 5 Aug 2025 3rd ovs-code 🇩🇪 911 404 17ms 24 May 2024 4th Steffan153 🇫🇮 880 418 21ms 11 Aug 2024 4th sean-niemann 🇺🇸 880 418 23ms 5 Dec 2025 6th hallvabo 🇳🇴 876 420 63ms 7 Apr 2024 7th nwellnhof 🇩🇪 874 421 39ms 25 Jun 2023 7th pardouin 🇫🇷 874 421 41ms 17 Mar 2024 9th SirBogman 🇺🇸 834 441 19ms 12 Dec 2023 10th anter69 🇭🇺 809 455 17ms 16 Feb 2024 11th aksyristos 805 457 37ms 34 hours ago 12th Flekay 🇩🇪 803 458 23ms 25 days ago 12th snoozingnewt 🇨🇦 803 458 21ms 25 days ago 14th lifthrasiir 🇰🇷 800 460 17ms 21 Nov 2024 15th bricknellj 798 461 247ms 26 Apr 2025 16th edsrzf 🇳🇿 780 472 21ms 14 Dec 2025 17th prplz 🇦🇺 756 487 26ms 8 Jul 2023 18th ryyyn 🇺🇸 753 489 15ms 18 Nov 2025 19th annaproxy 736 500 20ms 28 May 2023 20th blaztoma 🇱🇹 733 502 14ms 15 Dec 2025 21st ZakkkkAttackkkk 🇵🇭 724 508 211ms 18 Sep 2023 21st neel11235813 724 508 367ms 17 Mar 2024 23rd MichalMarsalek 🇨🇿 716 514 16ms 1 Apr 2023 24th MeWhenI 🇻🇦 715 515 23ms 23 May 2024 25th kg583 🇺🇸 713 516 147ms 28 Jul 2024 25th Artemis21 🇬🇧 713 516 87ms 14 Jan 2025 27th commandz0 🇺🇸 701 525 40ms 1 Sep 2025 28th StefanHabel 🇨🇦 698 527 14ms 3 Apr 2023 29th KatieLG 🇬🇧 688 535 13ms 5 Oct 2025 30th jeff-at-tamer-dot-codes 🇺🇸 683 539 306ms 30 May 2023 30th GolfingSuccess 🇬🇷 683 539 29ms 7 Dec 2025 32nd CornerMercury 🇬🇧 680 541 51ms 28 Feb 2026 33rd CaedenHarper 🇨🇦 675 545 97ms 11 Dec 2025 34th ahmetdemirag 🇨🇾 668 551 17ms 28 Jun 2024 35th stefangimmillaro 661 557 13ms 10 Nov 2023 36th janbehrens 🇩🇪 658 559 24ms 24 Jun 2023 37th jared-hughes 648 568 20ms 28 Sep 2025 38th byronknoll 🇺🇸 642 573 16ms 3 Mar 2024 39th plcc0 628 586 18ms 29 Mar 2025 39th Lv0Sys 🇵🇱 628 586 13ms 25 Feb 2026 41st duckyluuk 🇳🇱 616 597 18ms 28 Feb 2024 42nd OllieBoyne 🇬🇧 613 600 14ms 10 Apr 2023 43rd albanian-laundromat 611 602 13ms 23 Nov 2025 44th jmerle 🇳🇱 596 617 208ms 3 Jul 2023 45th CatsAreFluffy 595 618 23ms 1 Apr 2023 46th TheZwierzLF 🇵🇱 592 622 15ms 6 Jan 2026 47th BREMAUCY 🇫🇷 589 625 15ms 27 Aug 2025 48th guilhem-roy 🇫🇷 588 626 16ms 14 Jun 2023 49th SB-945 585 629 194ms 24 Aug 2024 50th yzhs 🇩🇪 580 635 17ms 22 Jun 2023 51st HelloGravity 578 637 16ms 11 Apr 2023 52nd inventshah 577 638 41ms 13 Feb 2024 53rd andrewjc2000 575 640 23ms 5 May 2025 54th dokutan 572 643 22ms 21 Apr 2025 55th TaserTheFox 🇺🇸 569 647 17ms 26 Apr 2023 56th InigoK 🇺🇸 562 655 15ms 11 Sep 2025 57th JOrE20 558 660 13ms 22 Feb 2026 58th AlephSquirrel 550 669 14ms 11 Feb 2024 59th jhpaques 🇫🇷 549 670 14ms 10 Apr 2023 60th ndren 547 673 13ms 2 Nov 2025 61st alemelis 537 685 27ms 17 Oct 2024 62nd yuchuehw 530 694 21ms 21 Feb 2024 63rd mathisfun271 523 703 12ms 16 Feb 2024 64th msbranicky 519 709 14ms 22 Jul 2023 65th Babafaba 502 733 24ms 12 Nov 2025 66th Rubiksmath 495 743 32ms 25 Jul 2024 67th neihousaigaai 485 758 16ms 11 Oct 2024 68th jatloe 482 764 15ms 24 Nov 2025 69th CedricGebistorf 481 765 16ms 5 May 2023 70th FlorianCassayre 🇫🇷 479 769 80ms 5 Aug 2025 70th qpwoeirut 479 769 14ms 6 Oct 2025 72nd tomh1012 472 780 14ms 2 Mar 2026 73rd robin-scragg 469 784 13ms 17 Jul 2025 74th mbittner20 463 794 15ms 27 May 2023 75th adamnielson42 🇺🇸 462 796 16ms 20 Nov 2023 76th madex 🇩🇪 446 826 13ms 24 Jul 2024 77th jfallon1997 444 829 22ms 26 Apr 2024 78th jtaxen 441 834 14ms 18 Apr 2024 79th wh3n3v3r 🇨🇿 439 838 16ms 14 Nov 2024 80th FortuiteMan 🇫🇷 431 854 16ms 12 Aug 2023 1–80 of 91 Next Last
