The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 days. Why not try and solve them ahead of time?
All holes in Go 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 Holes Points Chars Submitted 481st BlankSpruce 1 632 492 24 Nov 2024 482nd cad 1 621 174 16 Apr 2020 483rd vedranvuk 1 617 175 15 Apr 2020 484th SB-945 3 616 7,124 24 Sep 2023 485th codewrite 🇬🇧 1 614 345 16 Jun 2025 486th aliakseikalosha 1 610 177 14 Oct 2024 487th sbercx 1 609 128 14 Jul 2021 487th cingulataluke 1 609 128 2 Jun 2024 489th damoon 1 603 179 17 Apr 2020 490th SubsTheTechnomancer 1 602 517 6 Mar 2023 491st AlephSquirrel 1 593 182 14 May 2021 491st delkopiso 1 593 182 16 Aug 2022 493rd caraar12345 1 590 183 13 Apr 2022 494th kylelemons 1 589 528 16 Apr 2020 495th mrmena 🇦🇺 1 588 369 29 Mar 2024 496th DaaaaanB 🇨🇦 1 587 184 15 Apr 2020 496th pandapawskat 1 587 184 30 Aug 2021 498th dillon-duncando 1 586 133 21 Dec 2021 498th Mikey-Beep 🇬🇧 1 586 133 2 Oct 2022 500th fpesce 1 585 532 18 Mar 2022 501st zt14427 3 583 7,153 22 Oct 2023 502nd Gr3yR0n1n 1 581 186 21 Jul 2020 502nd louisbosqui 1 581 186 28 Dec 2020 502nd iamdp 1 581 186 28 Oct 2021 505th sm1lko 1 578 135 14 Dec 2022 506th RedzGoose 🇦🇺 1 578 187 17 Sep 2024 507th bwat2 1 574 188 6 Apr 2022 508th pengu1n-master 1 563 192 24 Sep 2021 508th SniperSmiley 🇺🇸 1 563 192 1 Aug 2022 508th exyzzy 1 563 192 29 Apr 2023 511th Kacarott 🇦🇺 1 561 139 29 Aug 2024 512th Pro-Haker 🇵🇱 1 557 140 23 days ago 513th RoscoeDaWah 🇬🇧 1 551 196 13 Feb 2022 514th tildezero 1 543 199 21 Dec 2021 515th anter69 🇭🇺 1 542 144 3 Mar 2025 516th misterzenzel 1 535 202 15 Apr 2020 517th lesserfish 2 532 1,473 23 May 2022 518th xkacer 🇨🇿 1 531 147 22 Nov 2020 519th stordev 1 528 214 26 Feb 2021 520th yvan 1 524 594 6 Jul 2022 521st Blockyheadman 1 522 207 7 Nov 2025 522nd ThomasObenaus 1 514 605 18 Dec 2020 523rd DataResearch 1 513 152 2 Jan 2022 524th jgrove2 1 512 211 12 Aug 2022 525th MakotoE 1 511 609 16 Apr 2020 526th Protothor 1 483 242 14 days ago 527th jiaminglimjm 🇲🇾 1 479 188 9 Jan 2021 528th panekj 🇵🇱 1 477 279 3 May 2022 529th iamkahvi 1 466 232 30 Apr 2020 530th Dasio 1 451 182 16 Apr 2020 531st SpareManiKatti 1 447 226 19 Apr 2022 532nd jhpaques 🇫🇷 1 444 347 16 Dec 2022 533rd Noah-Fox 1 443 176 1 Jun 2022 534th lukehewittvandy 1 438 315 13 May 2021 535th shu-bc 1 438 349 26 Oct 2022 536th JohnBreault 1 437 247 15 Aug 2022 537th jaxmattfair 🇺🇸 1 435 354 14 Jan 2023 538th julianbenegas 1 422 256 22 Sep 2022 539th ozefe 🇹🇷 1 415 270 28 Oct 2021 540th fredIV 1 408 507 22 Feb 2024 541st soglad 1 404 267 16 Apr 2020 542nd rdrgmnzs 1 401 701 15 Apr 2020 543rd BharadwajSridharan 🇮🇳 1 395 263 13 Nov 2020 544th baophan1 1 388 278 15 Apr 2020 545th Tsuk1w 🇫🇷 1 383 282 8 Nov 2022 546th joshuamkite 1 382 815 24 Mar 2024 547th marcsnid 1 376 287 15 Apr 2020 548th rvdnieuwendijk 🇳🇱 2 373 1,763 2 Nov 2020 549th fisherthomas14 1 366 377 13 May 2021 550th ryuchihoon 1 365 296 17 Apr 2020 551st Rekkoil 1 362 859 22 Apr 2024 552nd habiiev 1 359 301 16 Apr 2020 553rd mtighe 1 354 305 1 Sep 2020 553rd plainoldcheese 🇦🇶 1 354 305 17 Jan 2024 555th ktunprasert 1 352 378 19 Jun 2025 556th cva 1 348 310 16 Apr 2020 557th lukeme 1 344 314 30 Sep 2020 557th justmiles 1 344 314 4 Jun 2021 559th 5si 1 340 318 2 Nov 2020 560th ippokratis1983 1 338 320 10 May 2020 First Prev 481–560 of 608 Next Last
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