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?
Zodiac Signs 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 480th ericlangedijk 🇸🇮 480 286 437ms 21 May 2023 482nd tobeannouncd 479 313 163ms 25 Apr 2025 483rd dokutan 478 189 13ms 27 Apr 2025 484th Chinay-Domitrix 🇺🇸 477 242 2,579ms 11 days ago 485th CedricGebistorf 476 190 12ms 25 Jun 2022 486th MeWhenI 🇻🇦 474 229 10ms 6 Aug 2023 487th AlephSquirrel 472 179 159ms 2 Dec 2025 487th dokutan 472 179 138ms 23 Jan 2026 489th BambooleanLogic 🇸🇪 471 209 13ms 28 Jul 2022 490th p-vf 🇨🇭 471 291 412ms 9 Jul 2022 491st Natanaelel 🇸🇪 469 111 6ms 11 Jun 2022 492nd CaedenHarper 🇨🇦 468 178 538ms 15 Aug 2025 493rd LeeCamp 468 193 12ms 16 Jun 2022 494th celiendonze 🇨🇭 466 194 13ms 29 Mar 2023 495th MeWhenI 🇻🇦 462 489 25ms 1 Dec 2023 496th aglahir1 461 196 12ms 20 Jul 2022 497th ahmetdemirag 🇨🇾 459 197 14ms 19 Nov 2024 498th Pyroan 456 198 20ms 22 Jan 2026 499th BREMAUCY 🇫🇷 456 372 3ms 8 Nov 2025 500th CaedenHarper 🇨🇦 453 204 1,578ms 30 Sep 2025 501st Shanethegamer 🇺🇸 449 116 5ms 12 Dec 2022 502nd KatieLG 🇬🇧 448 306 440ms 24 Oct 2022 503rd KatieLG 🇬🇧 447 363 299ms 11 Jan 2023 504th MeWhenI 🇻🇦 446 276 25ms 13 Jun 2022 505th FortuiteMan 🇫🇷 445 270 15ms 19 Oct 2025 506th TheZwierzLF 🇵🇱 443 188 535ms 14 Dec 2025 506th dokutan 443 188 444ms 14 Feb 2026 508th CaedenHarper 🇨🇦 442 223 11ms 29 Aug 2025 509th tomh1012 440 385 5ms 13 Feb 2026 510th bac0id 438 319 433ms 4 Jul 2024 511th madex 🇩🇪 435 341 32ms 10 days ago 512th abt8601 🇹🇼 432 209 20ms 15 Jul 2022 512th mrnomm 432 209 11ms 12 Aug 2022 512th olleicua 🇺🇸 432 209 19ms 7 Nov 2025 515th janbehrens 🇩🇪 428 211 21ms 17 Jun 2023 516th bac0id 427 280 3ms 4 Jul 2024 517th plcc0 423 134 137ms 29 Dec 2025 518th MeWhenI 🇻🇦 423 347 38ms 12 Jun 2022 519th bac0id 422 325 421ms 4 Jul 2024 520th commandz0 🇺🇸 420 215 13ms 7 Sep 2022 521st quimey 416 217 14ms 13 Jul 2023 521st TheZwierzLF 🇵🇱 416 217 19ms 14 Dec 2025 523rd bidger 415 401 449ms 16 Nov 2022 524th Bonjour27891 🇻🇳 414 218 14ms 15 Jul 2022 525th plcc0 413 126 4ms 29 Dec 2025 526th MeWhenI 🇻🇦 411 268 2ms 31 Dec 2022 527th cros107 🇦🇺 407 222 14ms 12 Nov 2025 528th Yax42 🇫🇷 404 296 3ms 9 Jan 2026 529th AlexanderFair 403 224 12ms 20 Jul 2023 530th msbranicky 403 403 287ms 31 Aug 2023 531st Shanethegamer 🇺🇸 402 141 147ms 1 Jul 2022 532nd commandz0 🇺🇸 402 207 604ms 1 Sep 2025 533rd adamnielson42 🇺🇸 398 227 12ms 25 Apr 2023 534th nephila-nacrea 🇬🇧 391 133 5ms 3 Jul 2023 535th HumanoidCPU 389 232 21ms 16 Nov 2025 536th amollberg 🇸🇪 388 233 24ms 10 Jan 2024 537th msbranicky 385 440 4ms 12 Aug 2023 538th jgbaldwinbrown 380 315 3ms 15 Sep 2022 539th MeWhenI 🇻🇦 377 138 5ms 16 Apr 2023 540th MeWhenI 🇻🇦 376 399 167ms 13 Jun 2022 541st msbranicky 376 451 127ms 8 Nov 2025 542nd MaxElf999 375 241 12ms 23 Sep 2022 542nd TaserTheFox 🇺🇸 375 241 106ms 16 Mar 2023 542nd codingisgreatbutiamnot 375 241 13ms 11 Jun 2025 545th robin-scragg 370 244 20ms 11 Jul 2025 546th null-tangent 369 267 16ms 1 Aug 2022 547th TheZwierzLF 🇵🇱 368 196 38ms 25 Dec 2025 548th mbittner20 367 246 12ms 27 May 2023 549th jhpaques 🇫🇷 366 247 19ms 29 Jul 2022 550th dokutan 366 269 11ms 14 Jan 2026 551st HumanoidCPU 365 228 413ms 16 Nov 2025 552nd ian-h-chamberlain 🇺🇸 361 508 251ms 14 Jun 2022 553rd madex 🇩🇪 359 510 256ms 19 Jul 2024 554th JOrE20 359 536 64ms 13 Feb 2026 555th MeWhenI 🇻🇦 355 242 7ms 1 Oct 2022 556th null-tangent 352 472 474ms 2 Aug 2022 557th yzhs 🇩🇪 349 429 168ms 2 Jul 2023 558th Florian-Mt 348 283 12ms 20 Dec 2025 559th olleicua 🇺🇸 347 150 5ms 9 Nov 2025 560th madex 🇩🇪 346 164 162ms 10 days ago First Prev 481–560 of 665 Next Last
