The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 days. Why not try and solve them ahead of time?
Rock-paper-scissors-Spock-lizard 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 641st Ralac07 🇦🇺 592 302 11ms 18 Apr 2025 642nd BrenSchaap 591 304 11ms 21 Oct 2021 642nd tomh1012 591 304 10ms 24 days ago 644th shaunjc 590 303 13ms 15 Aug 2022 645th argusdusty 🇺🇸 589 305 10ms 27 Dec 2020 645th hiichbindermax 589 305 11ms 8 Sep 2024 647th Shanethegamer 🇺🇸 588 304 13ms 14 Mar 2023 648th proton 🇩🇪 587 248 39ms 20 Jun 2020 649th epic-programmer-guy 587 306 10ms 31 Dec 2023 650th two-bad 🇬🇧 586 305 12ms 25 Feb 2024 651st JunkIce 585 307 11ms 4 Dec 2024 652nd juliansiebert 🇩🇪 584 282 316ms 16 Oct 2023 653rd KatieLG 🇬🇧 584 306 12ms 4 Feb 2022 654th rbev 584 384 450ms 21 Jan 2022 655th dokutan 584 489 10ms 4 Feb 2026 656th dokutan 583 252 1,633ms 23 Apr 2025 657th RandGuy 583 308 11ms 16 Nov 2022 658th BambooleanLogic 🇸🇪 582 307 12ms 2 Dec 2021 659th GregsAStar 582 379 142ms 7 May 2022 660th postie77 582 385 471ms 14 Jun 2023 661st adriweb 🇫🇷 580 308 12ms 23 Aug 2023 662nd amishtal 580 310 10ms 2 Dec 2019 662nd TheZwierzLF 🇵🇱 580 310 13ms 24 Nov 2025 664th Shanethegamer 🇺🇸 580 357 141ms 19 May 2023 665th blaztoma 🇱🇹 580 364 162ms 26 Dec 2025 666th KatieLG 🇬🇧 578 254 1,842ms 25 Apr 2021 667th MaxElf999 578 311 13ms 28 Sep 2022 668th dcgjb 577 285 304ms 29 Feb 2024 668th rollershutter 577 285 7ms 7 Jun 2024 670th stefangimmillaro 576 234 3ms 12 Sep 2022 671st raphaelimahorn 576 310 13ms 15 Oct 2020 672nd HerLovelyTentacles 576 312 11ms 8 Feb 2021 673rd stefangabos 🇷🇴 575 317 5ms 3 Jul 2023 674th kmathis22 575 369 748ms 8 Dec 2025 675th CaedenHarper 🇨🇦 574 313 10ms 29 Jul 2025 676th MeWhenI 🇻🇦 573 530 42ms 4 Apr 2023 677th CheeseCake628 🇳🇴 572 314 57ms 19 Mar 2023 678th DaCoolOne 572 384 2ms 20 Nov 2019 679th olligobber 🇦🇺 572 385 158ms 22 May 2020 680th Y0UR-U5ERNAME 571 313 13ms 4 Sep 2021 680th avavuvu 571 313 10ms 20 Jun 2025 682nd BraedenMooreDev 571 315 16ms 29 Oct 2023 683rd albanian-laundromat 570 294 1,615ms 6 Nov 2025 684th FortuiteMan 🇫🇷 565 318 10ms 8 Sep 2023 685th DrPrettyman 563 319 16ms 24 Jul 2023 686th pandapawskat 563 383 2ms 4 Oct 2021 687th lyphyser 562 318 11ms 17 Jul 2023 688th roguh 🇬🇹 562 320 11ms 25 Jan 2024 689th tommy-dronkers 560 319 12ms 8 Dec 2020 690th Natanaelel 🇸🇪 558 265 36ms 24 Oct 2023 691st JunkIce 558 299 650ms 4 Dec 2024 691st TheZwierzLF 🇵🇱 558 299 732ms 24 Nov 2025 693rd connorslade 558 469 265ms 13 May 2022 694th akira-aizawa 🇯🇵 556 323 10ms 29 Oct 2020 694th cingulataluke 556 323 16ms 3 Jun 2024 696th CaedenHarper 🇨🇦 555 322 13ms 29 Aug 2025 697th myleopard 555 324 12ms 13 Oct 2021 697th jhpaques 🇫🇷 555 324 24ms 2 Aug 2022 697th chichha 555 324 10ms 30 Jan 2024 700th MeWhenI 🇻🇦 554 643 1,996ms 22 Apr 2024 701st lowlighter 553 323 12ms 30 Oct 2020 702nd ian-h-chamberlain 🇺🇸 553 473 308ms 3 Nov 2025 703rd Shanethegamer 🇺🇸 552 345 1,025ms 14 Mar 2023 704th AkashTandon167 551 326 11ms 29 Dec 2020 704th jameswmccarty 551 326 11ms 14 Feb 2026 706th dokutan 551 394 3ms 3 Dec 2025 707th CaedenHarper 🇨🇦 550 303 741ms 29 Jul 2025 708th Cube14yt 550 325 13ms 13 Nov 2025 709th Stockoh 🇫🇷 550 327 10ms 1 May 2024 709th codingisgreatbutiamnot 550 327 15ms 23 Aug 2024 711th dbut2 🇦🇺 550 446 341ms 16 Jul 2025 712th Bombergames 548 328 11ms 20 Jan 2022 713th MeWhenI 🇻🇦 548 409 514ms 21 Nov 2021 714th tatzyr 🇯🇵 546 267 34ms 26 Feb 2025 715th tomh1012 546 327 11ms 20 Sep 2020 716th mrmena 🇦🇺 546 329 11ms 19 Jun 2021 716th starfihs 546 329 10ms 18 Aug 2024 718th CheeseCake628 🇳🇴 545 306 546ms 18 Oct 2025 719th b4dpxl 545 330 10ms 9 Nov 2021 720th annaproxy 544 248 3ms 23 Feb 2022 First Prev 641–720 of 1,138 Next Last
