The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 24 hours. Why not try and solve them ahead of time?
Poker 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 321st SmartK8 🇨🇿 474 550 510ms 30 Oct 2022 322nd janbehrens 🇩🇪 473 338 13ms 28 Oct 2023 323rd aksyristos 471 286 17ms 3 days ago 324th bricknellj 469 287 10ms 15 Mar 2023 325th SirBogman 🇺🇸 467 233 43ms 19 Nov 2023 326th ZakkkkAttackkkk 🇵🇭 465 290 23ms 23 Oct 2023 327th guliyevemil1 🇦🇿 461 636 375ms 3 Feb 2021 328th deflatSOCO 460 293 12ms 5 Jun 2019 329th Bubbler-4 457 238 39ms 16 Dec 2021 330th bzijlema 🇳🇱 455 296 22ms 26 Jan 2026 331st MeWhenI 🇻🇦 453 635 412ms 26 Aug 2023 332nd stefangimmillaro 452 298 11ms 15 Oct 2023 332nd ryyyn 🇺🇸 452 298 31ms 13 Nov 2025 334th MeWhenI 🇻🇦 451 512 40ms 18 Nov 2023 335th MeWhenI 🇻🇦 451 518 504ms 28 Feb 2022 336th MeWhenI 🇻🇦 451 762 24ms 17 Nov 2021 337th 5cw 🇺🇸 446 302 22ms 9 Jul 2025 338th MeWhenI 🇻🇦 446 659 283ms 17 Sep 2021 339th KatieLG 🇬🇧 445 360 15ms 5 Oct 2025 340th lynn 443 304 20ms 23 Oct 2023 341st ericlangedijk 🇸🇮 441 591 574ms 23 May 2023 342nd lynn 440 292 781ms 17 Feb 2024 343rd davecame 440 306 12ms 17 Sep 2025 344th janbehrens 🇩🇪 438 527 37ms 28 Oct 2023 345th tomh1012 438 595 560ms 25 days ago 346th emgordon154 431 331 150ms 6 Sep 2024 347th MeWhenI 🇻🇦 431 606 514ms 2 Jan 2022 348th RaBa21 🇭🇺 429 314 19ms 1 Aug 2025 349th didion0 🇺🇸 428 374 15ms 29 Apr 2021 349th Lv0Sys 🇵🇱 428 374 12ms 2 Dec 2025 351st MeWhenI 🇻🇦 428 553 3ms 11 Sep 2022 352nd janbehrens 🇩🇪 425 458 4ms 28 Oct 2023 353rd jared-hughes 423 378 12ms 11 Sep 2022 354th yuchuehw 422 319 20ms 6 Jan 2024 355th ahmetdemirag 🇨🇾 416 324 12ms 12 Aug 2024 356th dokutan 416 420 3ms 3 Apr 2024 357th helbling 🇨🇭 415 386 13ms 25 Sep 2024 358th MeWhenI 🇻🇦 414 426 206ms 13 Dec 2022 359th jerrandolph 413 709 334ms 25 Sep 2025 360th robin-scragg 412 327 22ms 26 Aug 2025 361st Salutations45 410 390 11ms 3 Dec 2024 362nd jared-hughes 408 330 21ms 11 Sep 2022 363rd retrohun 407 516 4ms 10 Nov 2022 364th Shanethegamer 🇺🇸 406 292 43ms 16 Jan 2025 365th annaproxy 405 333 18ms 17 Sep 2022 366th MattShaile 405 395 12ms 29 Mar 2022 367th MeWhenI 🇻🇦 403 483 3ms 21 Mar 2024 368th blaztoma 🇱🇹 400 337 19ms 26 Dec 2025 369th janbehrens 🇩🇪 399 338 12ms 28 Oct 2023 370th roguh 🇬🇹 398 516 2ms 14 Jan 2024 371st AGoyet 397 339 19ms 28 Jul 2022 372nd madeforlosers 397 403 19ms 28 Apr 2025 373rd Babafaba 396 340 19ms 24 Nov 2025 374th leon-w 395 341 24ms 4 Jan 2019 375th Sp3000 🇦🇺 394 342 18ms 11 May 2021 375th neihousaigaai 394 342 13ms 20 May 2021 375th wh3n3v3r 🇨🇿 394 342 12ms 13 Nov 2024 378th Mabeloid 🇳🇴 394 522 3ms 28 Sep 2024 379th daedals 393 343 17ms 31 May 2019 380th coreynash 393 407 15ms 2 Feb 2024 381st KatieLG 🇬🇧 392 344 19ms 2 Oct 2025 381st Pyroan 392 344 17ms 3 Jan 2026 383rd Shanethegamer 🇺🇸 391 278 4ms 27 May 2024 384th Shanethegamer 🇺🇸 391 352 295ms 27 Oct 2023 385th retrohun 391 590 58ms 29 Oct 2019 386th CaedenHarper 🇨🇦 391 750 327ms 12 Nov 2025 387th CaedenHarper 🇨🇦 390 668 530ms 21 Oct 2025 388th abailey2020 🇺🇸 389 346 19ms 13 Dec 2020 389th MeWhenI 🇻🇦 389 529 2ms 7 May 2023 390th Babafaba 383 336 530ms 24 Nov 2025 391st olleicua 🇺🇸 381 311 38ms 31 Oct 2025 392nd inventshah 378 356 31ms 15 Nov 2022 393rd jared-hughes 377 463 2ms 11 Sep 2022 394th MeWhenI 🇻🇦 374 711 6ms 29 Mar 2024 395th KatieLG 🇬🇧 369 738 264ms 11 Jun 2021 396th cmdrsabre 360 806 171ms 6 Feb 2020 397th AlephSquirrel 359 358 813ms 21 Jan 2024 398th AlephSquirrel 359 375 23ms 3 Jan 2023 398th Lv0Sys 🇵🇱 359 375 21ms 2 Dec 2025 400th janbehrens 🇩🇪 358 335 795ms 28 Oct 2023 First Prev 321–400 of 567 Next Last
