The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 8 days. Why not try and solve them ahead of time?
Number Spiral in Python 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 161st croc54 327 199 17ms 12 Jan 2025 162nd raspofabs 323 201 11ms 10 Jul 2023 163rd nullie 322 202 17ms 10 Jun 2022 164th myleopard 316 206 16ms 20 Jul 2022 165th sultan 310 210 19ms 3 Mar 2024 165th yoavjs 310 210 10ms 5 Apr 2025 167th hiichbindermax 308 211 16ms 5 Sep 2024 168th mbittner20 297 219 10ms 14 Apr 2025 169th LeeCamp 294 221 10ms 30 Jan 2022 170th madex 🇩🇪 293 222 17ms 29 Sep 2025 171st EthanJantz 291 223 9ms 22 Aug 2025 172nd inverseLorentz 🇦🇺 290 224 12ms 10 May 2024 173rd Mikey-Beep 🇬🇧 284 229 10ms 23 Sep 2022 174th xyangst 283 230 17ms 18 Oct 2024 175th yuchuehw 281 231 16ms 28 Jan 2024 176th brimstonetrader 280 232 9ms 20 Dec 2023 177th jipsong 🇩🇪 269 242 11ms 13 May 2025 177th Bmrl7 269 242 10ms 22 Dec 2025 179th KadinSchultz 262 248 10ms 18 Dec 2023 180th simon-thornton_pace 248 262 10ms 3 Aug 2023 181st ridingqwerty 🇺🇸 246 264 10ms 22 Feb 2024 181st tomh1012 246 264 10ms 24 days ago 183rd martinnorling 🇸🇪 243 267 18ms 11 Mar 2022 184th Fracture17 236 275 9ms 2 Apr 2023 184th 4ndyJ 🇬🇧 236 275 16ms 16 Nov 2024 186th hellwue 235 277 16ms 7 Feb 2023 187th luca1339 231 281 10ms 17 Jul 2024 188th JOrE20 228 285 10ms 24 Dec 2025 189th LukasFolwarczny 🇨🇿 226 287 16ms 17 Sep 2022 190th joonaspu 225 289 17ms 14 Jun 2023 191st dylanjones92 222 293 9ms 25 Jan 2024 192nd Trunksistor 🇫🇷 221 294 10ms 15 Apr 2022 193rd PikeIt 218 298 17ms 14 Jun 2023 194th qwertzuioppel 217 300 10ms 2 Mar 2024 195th AkashTandon167 213 305 9ms 6 Mar 2022 196th IoLimmer 210 309 9ms 5 Jul 2024 197th vodker1 208 312 10ms 8 Mar 2022 197th j-Ewan 208 312 10ms 10 Mar 2022 197th realicraft 208 312 10ms 21 Mar 2022 197th EthanGrant1 208 312 10ms 16 Apr 2022 197th halp1 208 312 9ms 19 Apr 2022 197th Indivicivet 208 312 10ms 9 May 2022 197th Stockoh 🇫🇷 208 312 10ms 15 May 2022 197th CuboidRaptor 🇨🇦 208 312 9ms 27 May 2022 197th rowboat1 208 312 9ms 15 Jun 2022 197th jhu04 208 312 10ms 14 Jul 2022 197th ShiniGangrade 208 312 9ms 14 Jul 2022 197th P-Quentin 🇫🇷 208 312 9ms 16 Aug 2022 197th ArnaudGazda 208 312 9ms 2 Sep 2022 197th andre-de-lorde 208 312 9ms 7 Sep 2022 197th TheCod-r 🇦🇶 208 312 9ms 28 Sep 2022 197th DrPiranoid 208 312 9ms 10 Oct 2022 197th vishwathg 208 312 10ms 10 Oct 2022 197th 0-4849 208 312 9ms 19 Dec 2022 197th GWStuart 208 312 9ms 22 Dec 2022 197th dtaylor0 208 312 9ms 25 Dec 2022 197th badboj40 208 312 9ms 25 Dec 2022 197th mdnestor 208 312 9ms 27 Dec 2022 197th retrohun 208 312 10ms 28 Dec 2022 197th SirFireball3521 208 312 10ms 30 Jan 2023 197th kaptsanovb 208 312 9ms 5 May 2023 197th ehulinsky 🇺🇸 208 312 10ms 8 May 2023 197th lomarbrick 208 312 9ms 23 May 2023 197th sbercx 208 312 10ms 1 Aug 2023 197th Rambso 208 312 10ms 6 Oct 2023 197th ValentinCassayre 208 312 9ms 14 Oct 2023 197th rollershutter 208 312 10ms 17 Oct 2023 197th Mr-McChicken 208 312 9ms 18 Oct 2023 197th mikehanus 208 312 9ms 23 Nov 2023 197th kurkale6ka 208 312 10ms 8 Dec 2023 197th Glinte 208 312 9ms 15 Dec 2023 197th Pale-Vessel 208 312 10ms 18 Dec 2023 197th Bit125 208 312 9ms 28 Mar 2024 197th vhoulbreque 🇫🇷 208 312 9ms 30 Mar 2024 197th itljan30 208 312 9ms 1 Apr 2024 197th RedzGoose 🇦🇺 208 312 9ms 17 Apr 2024 197th codingisgreatbutiamnot 208 312 9ms 19 Jul 2024 197th Mabeloid 🇳🇴 208 312 9ms 4 Oct 2024 197th roguh 🇬🇹 208 312 11ms 13 Oct 2024 197th Unknownuserfrommars 208 312 9ms 21 Nov 2024 First Prev 161–240 of 285 Next Last
