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?
Time Distance 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 561st markus-rekdal 390 314 17ms 23 May 2022 561st WillowWispy 390 314 11ms 13 Apr 2025 563rd MeWhenI 🇻🇦 390 665 6ms 10 Apr 2022 564th yokasuretsu 389 315 11ms 13 Jan 2025 565th inverseLorentz 🇦🇺 388 316 13ms 1 Apr 2024 566th mbittner20 386 317 11ms 27 May 2023 566th jfallon1997 386 317 11ms 9 Apr 2024 566th tomh1012 386 317 18ms 23 days ago 569th suwat513 384 319 11ms 28 Sep 2022 570th LostSyntax21 🇬🇧 383 320 17ms 30 Nov 2025 571st Bonjour27891 🇻🇳 382 321 12ms 21 Apr 2022 572nd Pianoman1 380 322 18ms 3 Jan 2026 573rd msbranicky 379 310 624ms 16 Jan 2024 574th b10011 🇫🇮 379 323 12ms 27 Jan 2023 574th mathieurodic 379 323 17ms 21 Oct 2025 576th brochmann 🇸🇪 378 324 18ms 13 Aug 2023 577th alexsave 378 358 11ms 14 Jan 2026 578th dal548 375 327 11ms 12 Jun 2024 579th janbehrens 🇩🇪 373 220 3ms 29 May 2022 580th orthoplex 🇨🇽 373 763 204ms 2 Oct 2022 581st Bodo171 372 329 12ms 8 Dec 2022 582nd hellwue 371 330 11ms 15 Nov 2023 583rd vhoulbreque 🇫🇷 369 332 18ms 22 Aug 2022 584th KatieLG 🇬🇧 369 535 378ms 22 Jun 2022 584th KatieLG-Transpiler 🇬🇧 369 535 395ms 23 Jun 2022 586th MeWhenI 🇻🇦 369 772 195ms 11 Apr 2022 587th msbranicky 368 330 485ms 15 Jan 2024 588th PhysicDev 🇫🇷 367 334 11ms 26 Jan 2024 589th NickTheEASDude 🇺🇸 367 409 3ms 29 Mar 2024 590th TheZwierzLF 🇵🇱 366 335 44ms 20 May 2025 591st aalec 364 336 19ms 25 Apr 2024 591st HumanoidCPU 364 336 19ms 2 May 2024 591st croc54 364 336 17ms 27 Jan 2025 594th MeWhenI 🇻🇦 361 468 10ms 5 May 2022 595th KatieLG-Transpiler 🇬🇧 358 644 754ms 10 Jul 2022 596th scpchicken 🇵🇼 357 230 7ms 6 Jan 2023 597th MeWhenI 🇻🇦 355 679 157ms 11 Apr 2022 598th TheZwierzLF 🇵🇱 354 279 36ms 20 Dec 2025 599th TheZwierzLF 🇵🇱 354 332 773ms 25 Nov 2025 600th ellis-rix 353 347 11ms 2 Mar 2023 600th quimey 353 347 13ms 24 Mar 2023 602nd adoxography 352 348 11ms 13 Jun 2023 603rd madeforlosers 352 385 10ms 14 Jan 2025 604th Andriamanitra 🇫🇮 351 397 4ms 24 May 2023 605th JRaspass 🇬🇧 349 235 50ms 10 Jun 2022 606th Mikey-Beep 🇬🇧 346 354 11ms 1 Jun 2024 607th alemelis 345 355 17ms 13 Sep 2024 608th Florian-Mt 344 356 17ms 14 Jul 2024 608th sampatakumar 344 356 12ms 8 Feb 2026 610th rucin93 🇵🇱 343 342 659ms 21 Jan 2024 610th HumanoidCPU 343 342 466ms 2 May 2024 612th andre-lameirinhas 🇵🇹 342 358 11ms 26 Apr 2023 613th dillon-duncando 340 360 11ms 29 Sep 2022 614th 4ndyJ 🇬🇧 339 361 12ms 20 Dec 2023 615th damoose717 336 364 11ms 24 May 2025 615th Europe2048 336 364 13ms 17 days ago 617th rollershutter 336 365 12ms 23 Oct 2023 617th Andrey2001 336 365 18ms 31 Jan 2026 619th Demonarchet 334 367 11ms 18 Apr 2023 620th MeWhenI 🇻🇦 332 452 2ms 3 Jul 2024 621st Omega65536 🇩🇪 331 370 11ms 1 Dec 2022 622nd CaedenHarper 🇨🇦 330 396 119ms 17 Aug 2025 623rd MeWhenI 🇻🇦 327 251 7ms 16 Apr 2023 624th qwjhvbxi 327 374 11ms 9 Feb 2024 625th emgordon154 325 304 38ms 26 Jul 2024 626th TaserTheFox 🇺🇸 324 378 63ms 8 May 2023 627th adoxography 323 305 39ms 13 Jun 2023 628th eiburns 323 379 11ms 27 Oct 2023 629th Vaekor 322 380 11ms 28 Jul 2023 629th jameswmccarty 322 380 12ms 1 Aug 2024 631st 1231234md5 🇨🇳 317 386 12ms 15 Dec 2023 632nd JRaspass 🇬🇧 316 302 146ms 11 Apr 2022 633rd KatieLG 🇬🇧 308 748 748ms 5 Jan 2023 634th TaserTheFox 🇺🇸 307 441 11ms 17 Jan 2023 635th MaxElf999 305 401 11ms 29 Sep 2022 635th atazzam 🇺🇸 305 401 17ms 12 Feb 2023 637th anderium 302 406 12ms 5 Aug 2023 638th Natanaelel 🇸🇪 297 321 154ms 13 Aug 2023 639th r-benson 🇬🇧 294 417 18ms 31 Jan 2023 640th Mathrew2012 293 418 12ms 9 Nov 2024 First Prev 561–640 of 690 Next Last
