The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Arrows in JavaScript in bytes. 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 Bytes Time Submitted 81st GeorgeStechman 🇬🇧 433 203 14ms 4 Dec 2023 81st smclaughlin-cf 433 203 13ms 6 May 2025 83rd zakariamouhid 429 205 13ms 22 Apr 2023 83rd Protothor 429 205 13ms 9 days ago 85th Ralac07 🇦🇺 427 206 15ms 24 Nov 2025 86th HumanoidCPU 425 207 14ms 23 Nov 2025 87th Mabeloid 🇳🇴 421 209 15ms 13 Oct 2024 88th Yewzir 🇧🇪 419 210 16ms 17 Apr 2023 89th BBoehm 🇩🇪 415 212 15ms 30 Jan 2024 90th Florian-Mt 411 214 14ms 9 Jul 2024 91st MattShaile 398 221 15ms 26 Apr 2022 92nd KingSkyrock 🇺🇸 396 222 15ms 16 Feb 2022 92nd JTH1999 396 222 13ms 11 Apr 2023 94th johanrosenson 395 223 15ms 8 Dec 2021 95th LukeBridges 🇬🇧 393 224 16ms 11 Apr 2024 96th Re-Adventures 🇮🇳 391 225 15ms 17 Dec 2023 97th Giga-Bowser 388 227 15ms 6 Jan 2022 98th Ephellon 384 229 13ms 16 Dec 2023 99th Larento 378 233 16ms 14 Oct 2023 100th FrederikHutfless 🇩🇪 376 234 15ms 12 Jan 2023 101st veiko 374 235 14ms 20 Jun 2022 102nd hacker112 🇸🇪 371 237 14ms 19 Jun 2024 103rd null-tangent 368 239 15ms 23 Aug 2022 104th lewdev 🇺🇸 361 244 18ms 14 Mar 2024 105th con-cs 359 245 12ms 17 Oct 2021 106th adamnielson42 🇺🇸 355 248 14ms 30 May 2023 107th ollyspooner 353 249 17ms 25 Nov 2022 108th carlmrichter 🇩🇪 352 250 15ms 22 Jun 2024 109th dylanpyle 349 252 12ms 24 Mar 2022 109th fitzdotlol 🇺🇸 349 252 17ms 17 Apr 2022 109th MyltsinVV 349 252 15ms 27 Nov 2025 112th eiburns 337 261 15ms 24 Feb 2023 112th Vaekor 337 261 17ms 9 Jul 2023 114th samthidny 335 263 13ms 26 Apr 2022 115th joakim-ronning 328 268 18ms 25 May 2023 116th ereztaiar 🇮🇱 326 270 14ms 11 Sep 2021 117th IchBinMichMarkus 324 272 15ms 1 Jul 2024 118th jackkav 318 277 18ms 5 Jan 2022 119th stephanie-flower 310 284 12ms 6 Nov 2025 120th Tenclea 307 287 15ms 24 Aug 2023 121st strattonwhisler 303 290 13ms 7 May 2025 122nd gigaprofisi 🇺🇸 292 301 13ms 20 Jun 2025 123rd dokutan 291 302 14ms 29 Mar 2025 124th florton 285 309 15ms 29 Jan 2022 125th iczelia 🇩🇪 278 317 15ms 14 Oct 2025 126th yuranebykov 274 321 12ms 29 Jan 2024 127th R4z0rX 272 323 13ms 27 Aug 2024 128th JohnSBarden 263 334 16ms 23 Sep 2022 129th mcculloughjchris 221 399 15ms 16 Dec 2022 130th Ranner198 213 413 13ms 13 Jun 2024 131st KaleChips22 208 424 16ms 21 Jul 2025 132nd Ashikpaul 🇮🇳 199 443 18ms 13 Oct 2024 133rd apokryfos 193 456 15ms 19 Aug 2023 133rd xyangst 193 456 17ms 12 Oct 2024 135th hacker19374 189 466 14ms 13 Mar 2023 136th avavuvu 188 467 12ms 22 Jun 2025 137th noahhorlacher 179 492 12ms 5 Aug 2024 138th MyXoToD 🇩🇪 178 493 16ms 7 May 2025 139th 7f-galaxii 176 501 14ms 6 Dec 2022 140th KatieLG-Transpiler 🇬🇧 155 568 16ms 25 Jun 2022 141st kordrun 127 695 13ms 4 Apr 2024 142nd 1337-man 116 759 14ms 24 Jan 2022 143rd BKGSr2 115 763 13ms 26 Sep 2023 144th PaulCouthouis 107 824 14ms 25 May 2022 145th lxhom 89 985 17ms 13 May 2023 146th two-long 1 112,741 13ms 25 Oct 2022 First Prev 81–146 of 146
