The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
π in Python 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 401st j-Ewan 278 234 16ms 10 Mar 2022 402nd Phyisis 277 235 18ms 30 Apr 2024 403rd kurkale6ka 275 236 1,200ms 16 Dec 2025 404th RustemB 🇷🇺 274 237 22ms 7 Sep 2018 405th twocatsinatrenchcoat 273 238 57ms 15 Apr 2022 406th mikehanus 270 241 72ms 22 Nov 2023 407th zach333 267 243 26ms 12 Jul 2024 408th mokymok 🇺🇸 266 244 71ms 23 Nov 2021 408th Jaydosu 266 244 73ms 7 Jun 2022 410th freerainboxbox 265 245 992ms 19 Oct 2020 411th hymanimy 264 246 2,757ms 5 Dec 2022 412th DaleNaci 263 247 64ms 28 Jul 2018 413th rishavb123 262 248 70ms 25 Jul 2018 413th leon-w 262 248 57ms 4 Jan 2019 413th drabart 🇵🇱 262 248 127ms 27 Nov 2023 416th curohu 🇺🇸 261 249 19ms 14 Oct 2024 417th yuchuehw 260 250 356ms 30 Dec 2023 417th p214974_edj 260 250 18ms 17 Sep 2025 419th bsoyka 🇺🇸 259 251 69ms 16 Jul 2022 419th Stuff691734 259 251 66ms 25 Aug 2024 421st pecholsjones 258 252 160ms 12 Dec 2021 422nd Pandapip1 257 253 64ms 10 Feb 2021 423rd kasarino 256 254 75ms 9 days ago 424th PeterTillema 🇳🇱 255 255 69ms 14 Mar 2023 425th richard-oelze 🇩🇪 254 256 71ms 14 Mar 2021 426th Mikey-Beep 🇬🇧 250 260 70ms 11 Oct 2022 427th jameswmccarty 249 261 72ms 8 Jul 2024 428th jdszekeres 248 262 29ms 19 Jun 2023 428th rustykitty 🇺🇸 248 262 72ms 28 Oct 2025 430th ridingqwerty 🇺🇸 244 266 61ms 5 Feb 2024 430th Freddiechang 244 266 3,783ms 14 Mar 2024 432nd alexjlaberge 238 273 64ms 19 Sep 2019 432nd Arridian 238 273 16ms 27 Sep 2021 434th bwenstar 236 275 65ms 9 Aug 2022 434th NoneTheFewer 236 275 65ms 26 Dec 2025 436th Nightmarius 234 278 65ms 20 Jan 2024 437th martingehrke 231 281 19ms 23 Nov 2020 437th Yareeeema 231 281 66ms 12 Apr 2022 439th ItsMeNoobieboy 230 282 153ms 19 Dec 2022 440th RoscoeDaWah 🇬🇧 230 283 65ms 14 Mar 2022 441st Pyroan 229 284 12ms 13 May 2025 442nd rowboat1 228 285 68ms 19 Jun 2022 443rd vuxlee584 🇻🇳 226 287 66ms 16 Aug 2022 444th Aurel300 🇨🇭 225 289 73ms 21 Jul 2024 445th 5si 224 290 63ms 11 Nov 2020 445th joshmoody24 224 290 66ms 4 Mar 2022 447th ebpmp 223 292 18ms 24 May 2020 448th 130N35 221 294 19ms 27 Jan 2020 449th Unknownuserfrommars 220 296 14ms 22 Nov 2024 450th zwxzwxzwx21 218 298 76ms 4 Jan 2024 451st markbyrne 216 301 18ms 27 Nov 2021 452nd d0x2f 212 306 65ms 7 Jan 2020 453rd HunterC14 209 311 12ms 16 Nov 2025 454th maxliuql 204 318 9ms 11 Jul 2025 454th llPlayll 204 318 74ms 5 Dec 2025 456th zuparnowa 202 322 37ms 31 Jan 2019 456th henrytranter 202 322 36ms 20 Sep 2019 456th KadinSchultz 202 322 66ms 11 hours ago 459th HagenFritz 201 324 14ms 20 Jun 2025 460th Philipuss1 198 329 64ms 19 Dec 2020 460th jacksonhenry3 198 329 1,325ms 3 Dec 2022 462nd Crambor 196 331 19ms 10 Jan 2020 463rd YoungjuneKwon 196 332 72ms 30 Dec 2018 464th hacker19374 195 334 75ms 15 Mar 2023 465th Ashikpaul 🇮🇳 191 341 18ms 24 May 2021 466th StHagel 178 366 34ms 25 May 2023 467th themoonisacheese 175 372 28ms 17 Mar 2025 468th 5ug4md 170 383 31ms 13 Feb 2023 469th snothacker 161 403 40ms 6 Aug 2024 470th bidger 161 404 19ms 31 Oct 2022 470th retrohun 161 404 30ms 25 Nov 2025 472nd juliusgeo 159 408 4,012ms 2 Feb 2023 473rd muser-logiccpu 🇺🇦 158 412 15ms 23 Jul 2025 474th spenceryonce 145 449 19ms 21 Nov 2021 475th shraiwi 142 457 16ms 2 Apr 2020 476th ryguyNelson 131 496 727ms 8 May 2021 477th DylanGodfrey 129 505 61ms 6 Dec 2018 478th jeff-at-tamer-dot-codes 🇺🇸 117 556 15ms 14 Mar 2023 479th MichalMarsalek 🇨🇿 116 560 10ms 5 Mar 2023 480th Zhenyu-Bo 116 561 15ms 1 Aug 2025 First Prev 401–480 of 658 Next Last
