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 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 880th CaedenHarper 🇨🇦 362 299 10ms 29 Jul 2025 882nd oriphi 361 300 11ms 17 Jun 2019 882nd b4dpxl 361 300 10ms 9 Nov 2021 882nd omri2001 361 300 11ms 22 Oct 2022 882nd nemo4598 361 300 10ms 24 Feb 2026 886th fischfood 361 409 5ms 5 Aug 2025 887th GV94 🇸🇪 359 359 12ms 8 Dec 2020 888th luca1339 359 496 543ms 30 Oct 2024 889th dokutan 358 538 976ms 3 Feb 2026 890th berdzi 357 303 11ms 20 Apr 2022 891st goombado 356 304 10ms 23 Oct 2020 892nd Msleizak 🇫🇷 356 544 4ms 10 Nov 2023 893rd dokutan 356 694 31ms 24 Feb 2026 894th eshilo-draper 355 305 10ms 13 Sep 2022 894th Ythaenagor 355 305 10ms 5 Aug 2024 896th vonKrafft 354 306 12ms 25 Mar 2020 896th zt14427 354 306 10ms 28 Feb 2023 896th ridingqwerty 🇺🇸 354 306 13ms 14 Dec 2023 899th andre-lameirinhas 🇵🇹 352 307 10ms 8 Feb 2020 899th Bombergames 352 307 12ms 20 Jan 2022 899th julian-hoelz 352 307 10ms 22 Sep 2024 902nd kasarino 352 666 39ms 26 Feb 2026 903rd Xwilarg 🇫🇷 352 787 44ms 18 Nov 2021 904th befoster 351 308 10ms 8 May 2021 904th Bonjour27891 🇻🇳 351 308 12ms 13 Mar 2022 904th JOrE20 351 308 10ms 8 Feb 2026 907th Schmitt-Very-Cool 351 552 4ms 22 Nov 2023 908th CaedenHarper 🇨🇦 350 289 741ms 29 Jul 2025 909th ellis-rix 350 309 11ms 28 Oct 2024 910th msbranicky 350 475 2ms 11 Aug 2023 911th aazuspan 348 311 11ms 12 Jun 2022 912th MeWhenI 🇻🇦 348 569 148ms 7 Jul 2021 913th CDWimmer 347 312 10ms 8 May 2020 913th dal548 347 312 10ms 12 Jun 2024 915th KatieLG-Transpiler 🇬🇧 347 674 318ms 25 Sep 2022 916th dokutan 346 676 381ms 4 Feb 2025 917th mathieurodic 345 314 10ms 21 Oct 2025 918th KatieLG 🇬🇧 344 477 3ms 29 Mar 2024 919th firegene 🇮🇪 343 315 11ms 5 days ago 920th Crysp 342 377 12ms 13 Apr 2021 921st dokutan 342 717 1,295ms 10 Dec 2024 922nd dijs 341 378 11ms 22 Dec 2019 923rd dylanjones92 340 318 10ms 24 Jan 2024 924th cmayer777 340 549 2ms 14 Oct 2022 925th MeWhenI 🇻🇦 340 638 256ms 18 Mar 2024 926th MeWhenI 🇻🇦 339 372 8ms 18 Nov 2023 927th alangodfrey 338 320 10ms 18 Jun 2019 928th TheZwierzLF 🇵🇱 337 224 35ms 25 Dec 2025 929th CaedenHarper 🇨🇦 337 344 1,479ms 7 Sep 2025 930th eranws 337 382 11ms 2 Sep 2022 931st aranasaurus 337 571 114ms 12 May 2022 932nd KatieLG 🇬🇧 337 638 1,623ms 28 Sep 2024 933rd oddvalue 336 439 5ms 4 Aug 2023 934th RedzGoose 🇦🇺 335 302 675ms 10 Sep 2024 935th JGDoerrer 335 648 176ms 1 Feb 2022 936th TravisEz13 334 312 291ms 5 Jun 2020 937th MeWhenI 🇻🇦 333 311 3ms 16 Apr 2023 938th meenie 332 228 39ms 1 Jan 2021 939th evanrittner 331 327 10ms 18 Nov 2019 939th dotcomstar 331 327 18ms 17 Nov 2021 941st KatieLG 🇬🇧 330 504 2ms 9 Sep 2022 942nd mazzegi 330 709 366ms 17 Apr 2020 943rd robertovers 327 331 10ms 9 Oct 2023 944th KatieLG 🇬🇧 327 543 390ms 23 Mar 2024 945th KatieLG 🇬🇧 326 1,183 10ms 25 Apr 2022 946th derekthatcher 325 333 11ms 21 Sep 2020 947th codewrite 🇬🇧 324 590 459ms 7 May 2025 948th GrayJoKing 🇦🇺 324 1,909 2ms 11 Aug 2020 949th bretthat0 323 335 10ms 5 Mar 2022 950th aaronze 🇦🇺 323 399 12ms 27 Apr 2021 951st KatieLG 🇬🇧 323 483 84ms 23 Mar 2024 952nd KatieLG 🇬🇧 323 614 128ms 25 Apr 2022 953rd RoscoeSmith 322 336 11ms 22 Nov 2022 954th martinnorling 🇸🇪 320 338 15ms 4 Feb 2022 955th dokutan 320 481 3,916ms 24 Oct 2024 956th alemelis 319 316 756ms 19 Sep 2024 957th Pena86 319 339 10ms 28 Feb 2021 958th eiburns 316 342 11ms 4 Jan 2022 958th Vaekor 316 342 11ms 3 Aug 2023 960th CatsAreFluffy 315 343 10ms 8 Feb 2023 First Prev 881–960 of 1,133 Next Last
