The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 27 hours. Why not try and solve them ahead of time?
Medal Tally in all languages 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 240th Lv0Sys 🇵🇱 751 133 10ms 25 Feb 2026 242nd Shanethegamer 🇺🇸 749 164 1,047ms 22 Oct 2024 243rd Shanethegamer 🇺🇸 748 104 458ms 16 Jan 2024 244th edsrzf 🇳🇿 744 233 10ms 21 Feb 2025 245th Shanethegamer 🇺🇸 743 167 18ms 31 Oct 2024 246th adriweb 🇫🇷 741 160 31ms 19 Sep 2023 247th didion0 🇺🇸 740 135 11ms 21 Jul 2023 247th ovs-code 🇩🇪 740 135 16ms 26 Nov 2024 249th inventshah 738 159 2ms 22 Jul 2024 250th anter69 🇭🇺 737 118 32ms 2 Apr 2024 251st retrohun 737 131 128ms 30 Dec 2024 252nd MichalMarsalek 🇨🇿 737 186 600ms 1 Jun 2023 253rd YAJUE114514 737 190 180ms 30 Jul 2025 254th snoozingnewt 🇨🇦 736 228 107ms 6 Dec 2025 255th MeWhenI 🇻🇦 735 384 1,730ms 7 Nov 2025 256th KatieLG 🇬🇧 734 106 319ms 28 Oct 2024 257th GolfingSuccess 🇬🇷 733 60 205ms 6 Jun 2023 258th GolfingSuccess 🇬🇷 732 109 15ms 19 Aug 2024 259th albanian-laundromat 732 117 1,319ms 3 Nov 2025 260th Briseglace 731 165 2,723ms 8 Apr 2025 261st annaproxy 730 192 145ms 21 Aug 2023 262nd scpchicken 🇵🇼 728 98 9ms 15 Nov 2023 263rd pardouin 🇫🇷 727 87 65ms 11 Aug 2025 264th voytxt 🇨🇿 724 138 13ms 3 Jun 2023 264th madeforlosers 724 138 11ms 4 hours ago 266th MeWhenI 🇻🇦 722 215 3ms 12 Aug 2023 267th Shanethegamer 🇺🇸 719 165 4ms 28 Jan 2024 268th SB-945 718 121 11ms 19 Apr 2024 269th pardouin 🇫🇷 715 108 1,481ms 23 Sep 2025 270th Shanethegamer 🇺🇸 715 160 11ms 7 Mar 2024 271st ovs-code 🇩🇪 714 109 743ms 25 Nov 2025 272nd MeWhenI 🇻🇦 714 173 5ms 7 Jul 2023 273rd Shanethegamer 🇺🇸 710 136 12ms 16 Dec 2023 274th yoshykai 709 232 416ms 9 Apr 2025 275th Yax42 🇫🇷 708 141 11ms 20 Jan 2026 276th annaproxy 703 177 413ms 12 Jun 2023 277th MeWhenI 🇻🇦 702 230 302ms 12 Aug 2023 278th emgordon154 702 247 15ms 18 Dec 2025 279th SirBogman 🇺🇸 700 88 34ms 8 Jun 2025 280th MeWhenI 🇻🇦 699 143 12ms 3 Jul 2023 281st leth4 699 178 404ms 21 Jun 2023 282nd janAkali 🇷🇺 699 196 389ms 20 days ago 283rd antimon2 🇯🇵 698 112 871ms 1 Jun 2023 284th Yax42 🇫🇷 696 123 1,177ms 16 Sep 2025 285th Shanethegamer 🇺🇸 696 231 241ms 2 Jun 2023 286th DialFrost 🇸🇬 691 183 102ms 17 Nov 2024 287th ovs-code 🇩🇪 690 126 31ms 2 Jun 2023 288th targrik 690 179 5ms 12 Nov 2025 289th h3ra993huskp 🇯🇵 688 239 594ms 30 Nov 2025 290th Shanethegamer 🇺🇸 687 196 98ms 14 Dec 2024 291st BambooleanLogic 🇸🇪 684 146 11ms 27 Jun 2023 292nd edsrzf 🇳🇿 684 166 13ms 24 days ago 293rd edsrzf 🇳🇿 682 181 5ms 10 Oct 2024 294th DialFrost 🇸🇬 681 179 468ms 10 Jul 2024 295th tatzyr 🇯🇵 680 93 37ms 20 Jan 2025 296th 4atj 679 128 31ms 25 Jul 2025 297th MeWhenI 🇻🇦 679 190 120ms 8 Jul 2023 298th dokutan 677 169 11ms 3 Jul 2024 299th sean-niemann 🇺🇸 677 180 497ms 23 Jul 2024 300th bizy-coder 676 115 634ms 17 Jan 2024 301st itsh01 675 148 12ms 19 Jun 2023 302nd AlexanderFair 675 183 4ms 11 Aug 2023 303rd snoozingnewt 🇨🇦 674 213 128ms 20 Nov 2025 304th Shanethegamer 🇺🇸 670 132 152ms 8 Jan 2025 305th lyphyser 670 149 14ms 3 Jun 2023 305th alexsave 670 149 11ms 25 Dec 2025 307th bzijlema 🇳🇱 669 130 29ms 25 Oct 2025 307th blaztoma 🇱🇹 669 130 35ms 31 hours ago 309th MeWhenI 🇻🇦 669 205 414ms 12 Aug 2023 310th tayloia 🇬🇧 666 150 10ms 2 Jun 2023 310th targrik 666 150 11ms 22 Mar 2025 312th Natanaelel 🇸🇪 665 95 38ms 28 Jan 2024 313th MeWhenI 🇻🇦 665 235 448ms 3 Sep 2023 314th nwellnhof 🇩🇪 664 131 31ms 30 Jun 2023 314th wh3n3v3r 🇨🇿 664 131 12ms 10 Nov 2024 316th MeWhenI 🇻🇦 663 334 24ms 7 Dec 2023 317th lifthrasiir 🇰🇷 662 75 3ms 30 Nov 2024 318th MeWhenI 🇻🇦 662 203 43ms 4 Sep 2024 319th Shanethegamer 🇺🇸 661 108 4ms 9 Jun 2023 320th DialFrost 🇸🇬 661 151 10ms 4 Aug 2024 First Prev 241–320 of 618 Next Last