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?
Medal Tally 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 81st neihousaigaai 526 171 14ms 12 Feb 2024 82nd OllieBoyne 🇬🇧 523 172 11ms 8 Jun 2023 82nd BREMAUCY 🇫🇷 523 172 12ms 27 Mar 2024 84th galloj 🇨🇿 517 174 12ms 4 Jun 2023 84th qpwoeirut 517 174 10ms 14 Aug 2025 86th davecame 511 176 11ms 29 Nov 2023 86th logvp 511 176 18ms 13 Jan 2024 86th snydej 511 176 12ms 21 Nov 2024 86th HumanoidCPU 511 176 12ms 5 May 2025 90th andrewjc2000 508 177 17ms 9 Mar 2025 91st quimey 497 181 11ms 7 Jun 2023 92nd Mabeloid 🇳🇴 495 182 15ms 4 May 2025 93rd janbehrens 🇩🇪 492 183 11ms 5 Jun 2023 94th davidludwik2370 479 188 10ms 27 Jul 2025 95th nstearns96 🇬🇧 476 189 11ms 31 Dec 2023 96th CaedenHarper 🇨🇦 466 193 30ms 13 Aug 2025 97th andre-lameirinhas 🇵🇹 462 195 18ms 1 Jun 2023 98th fkantelberg 457 197 13ms 24 Jul 2023 99th cros107 🇦🇺 455 198 18ms 9 Aug 2023 100th guilhem-roy 🇫🇷 452 199 18ms 20 Jun 2023 101st RYNO8 448 201 11ms 13 Nov 2023 102nd msbranicky 446 202 17ms 19 Oct 2023 102nd evan18c 446 202 12ms 19 Apr 2025 104th Alex-x90 🇺🇸 443 203 11ms 17 Aug 2023 104th Emutis 🇱🇹 443 203 17ms 4 Nov 2025 106th FortuiteMan 🇫🇷 433 208 11ms 17 Aug 2023 107th TaserTheFox 🇺🇸 429 210 10ms 1 Jun 2023 107th croc54 429 210 18ms 15 Dec 2024 109th adamnielson42 🇺🇸 427 211 11ms 1 Jun 2023 110th Andrey135296 413 218 11ms 17 Sep 2024 111th jatloe 409 220 12ms 27 Sep 2024 112th jipsong 🇩🇪 407 221 11ms 5 Jul 2025 113th yzhs 🇩🇪 405 222 13ms 21 Jun 2023 114th rollershutter 404 223 19ms 18 Nov 2025 115th mbittner20 393 229 11ms 8 Feb 2024 116th madex 🇩🇪 391 230 18ms 7 Jun 2023 116th ridingqwerty 🇺🇸 391 230 18ms 22 Feb 2024 118th eiburns 378 238 11ms 26 Oct 2023 118th alemelis 378 238 18ms 14 Sep 2024 120th Florian-Mt 369 244 12ms 16 Jan 2026 121st firegene 🇮🇪 366 246 11ms 25 Dec 2023 122nd epic-programmer-guy 360 250 11ms 27 Dec 2023 123rd yuchuehw 356 253 19ms 12 May 2024 124th DGipe 352 256 11ms 4 Jun 2024 125th camieac 🇬🇧 349 258 11ms 8 Jun 2023 126th damoose717 347 259 11ms 24 May 2025 127th Andrey2001 344 262 17ms 2 days ago 128th Mikey-Beep 🇬🇧 340 265 11ms 23 Aug 2023 128th tomh1012 340 265 18ms 24 Feb 2026 130th jtaxen 337 267 17ms 9 Oct 2025 131st RedzGoose 🇦🇺 314 287 18ms 25 Feb 2025 132nd CutSandstone 305 295 11ms 8 Jul 2024 133rd TheZwierzLF 🇵🇱 303 297 11ms 23 Nov 2025 134th ellis-rix 296 304 12ms 13 Jun 2023 134th zt14427 296 304 11ms 7 Jul 2025 136th inverseLorentz 🇦🇺 265 339 11ms 5 Oct 2023 137th Bit125 251 359 11ms 27 Mar 2024 138th Ralac07 🇦🇺 247 364 11ms 24 Nov 2025 139th brimstonetrader 203 443 11ms 26 Dec 2023 140th Zhenyu-Bo 197 458 12ms 31 Jul 2025 141st kevinnaviapaiva 180 499 11ms 24 Feb 2025 142nd haighd 133 676 12ms 29 Oct 2023 143rd AidanWalter 132 682 11ms 28 Nov 2025 First Prev 81–143 of 143
