The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 days. Why not try and solve them ahead of time?
Ten-pin Bowling 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 401st kmathis22 461 278 450ms 15 Dec 2025 402nd janAkali 🇷🇺 461 539 36ms 27 Feb 2026 403rd MeWhenI 🇻🇦 459 185 305ms 8 Jul 2023 404th stefangimmillaro 459 188 10ms 4 May 2024 405th BambooleanLogic 🇸🇪 458 214 10ms 21 Aug 2022 406th albanian-laundromat 458 542 36ms 25 days ago 407th CornerMercury 🇬🇧 458 719 12ms 23 Feb 2026 408th lynn 455 267 2ms 22 May 2021 409th Shanethegamer 🇺🇸 454 143 37ms 29 Mar 2025 410th MeWhenI 🇻🇦 451 165 250ms 5 Mar 2024 411th janAkali 🇷🇺 451 311 353ms 9 days ago 412th ageneric 442 195 17ms 17 Jan 2022 413th rucin93 🇵🇱 440 196 17ms 31 May 2025 414th blaztoma 🇱🇹 436 149 40ms 15 Dec 2025 415th MeWhenI 🇻🇦 436 279 2ms 5 Jun 2023 416th MeWhenI 🇻🇦 435 314 69ms 8 Mar 2023 417th InigoK 🇺🇸 431 200 17ms 14 Aug 2025 417th Bmrl7 431 200 11ms 24 Dec 2025 419th CaedenHarper 🇨🇦 431 417 291ms 30 Oct 2025 420th junkondo-jp 428 229 12ms 27 Feb 2026 421st retrohun 424 266 193ms 27 Sep 2025 422nd prplz 🇦🇺 423 204 17ms 8 Dec 2022 423rd jared-hughes 422 232 9ms 13 Feb 2023 423rd acollett89 422 232 11ms 5 Aug 2025 425th strout 421 355 155ms 17 Aug 2022 426th Lv0Sys 🇵🇱 419 155 38ms 3 Dec 2025 427th madeforlosers 419 234 13ms 4 Mar 2025 428th jacobly0 🇺🇸 419 786 11ms 13 Sep 2023 429th lynn 416 200 1,046ms 10 Nov 2021 430th bbakersmith 416 271 23ms 2 Aug 2021 431st madex 🇩🇪 414 600 38ms 23 Feb 2026 432nd qpwoeirut 411 210 10ms 13 Aug 2025 433rd tomh1012 410 804 12ms 23 Feb 2026 434th janbehrens 🇩🇪 409 182 253ms 17 Jun 2023 435th janbehrens 🇩🇪 409 211 17ms 17 Jun 2023 435th cros107 🇦🇺 409 211 17ms 31 Dec 2025 437th MeWhenI 🇻🇦 409 404 43ms 4 Sep 2024 438th FortuiteMan 🇫🇷 407 212 23ms 16 Dec 2025 439th Jacob385 404 317 335ms 18 Mar 2024 440th alphafalfa 401 253 2ms 25 Oct 2024 441st jacklynnepenick 398 217 18ms 26 Aug 2021 442nd MeWhenI 🇻🇦 398 828 141ms 23 Apr 2025 443rd madex 🇩🇪 396 419 217ms 29 Jul 2025 444th MeWhenI 🇻🇦 395 335 4ms 5 Oct 2023 445th jerrandolph 393 458 288ms 6 Nov 2023 446th AlephSquirrel 391 378 7ms 21 Oct 2024 447th jaredcrystal 🇺🇸 382 170 38ms 14 Dec 2020 448th StefanHabel 🇨🇦 382 226 24ms 9 Sep 2023 449th Emutis 🇱🇹 378 228 10ms 18 Nov 2025 450th omurakazuaki 🇯🇵 378 259 11ms 16 Feb 2021 451st connorjs 375 261 14ms 2 May 2020 452nd guilhem-roy 🇫🇷 373 231 29ms 7 Mar 2022 453rd dsntzn 🇸🇰 372 263 10ms 16 Sep 2020 454th KatieLG 🇬🇧 371 485 303ms 11 Jan 2023 455th KatieLG-Transpiler 🇬🇧 370 233 25ms 9 Jan 2026 456th Lv0Sys 🇵🇱 369 234 18ms 3 Dec 2025 457th snoozingnewt 🇨🇦 369 300 94ms 25 Oct 2025 458th wh3n3v3r 🇨🇿 367 235 11ms 16 Nov 2024 459th anter69 🇭🇺 365 681 36ms 23 Feb 2026 460th prestosilver 🇺🇸 363 386 533ms 9 days ago 461st lynn 362 911 22ms 30 May 2021 462nd CedricGebistorf 361 239 52ms 15 Mar 2022 463rd scpchicken 🇵🇼 360 153 3ms 17 Feb 2023 464th Feniske 🇫🇷 360 236 381ms 24 Jun 2024 465th Jacob385 360 426 14ms 26 Feb 2026 466th MeWhenI 🇻🇦 359 225 9ms 13 Aug 2024 467th KatieLG-Transpiler 🇬🇧 358 233 429ms 16 Aug 2024 468th BREMAUCY 🇫🇷 358 920 12ms 16 Dec 2025 469th KatieLG 🇬🇧 357 446 2ms 13 Jun 2021 470th CaedenHarper 🇨🇦 355 276 10ms 15 Sep 2025 471st rucin93 🇵🇱 353 235 167ms 31 Oct 2024 472nd ahmetdemirag 🇨🇾 352 245 65ms 19 Feb 2025 473rd msbranicky 351 513 289ms 31 Aug 2023 474th GolfingSuccess 🇬🇷 349 239 602ms 2 Mar 2024 475th Babafaba 348 248 36ms 4 Nov 2025 476th Andriamanitra 🇫🇮 346 717 39ms 27 Feb 2026 477th MaxElf999 345 250 11ms 3 Oct 2022 477th GolfingSuccess 🇬🇷 345 250 19ms 30 Mar 2023 479th blaztoma 🇱🇹 343 161 3ms 16 Dec 2025 480th scpchicken 🇵🇼 342 252 44ms 12 Mar 2022 First Prev 401–480 of 637 Next Last