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?
Rijndael S-box in all languages 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 561st MeWhenI 🇻🇦 388 561 2ms 1 Sep 2023 562nd madex 🇩🇪 386 218 1,369ms 3 Jul 2024 563rd tomh1012 386 345 436ms 10 Nov 2025 564th jared-hughes 385 194 2ms 7 Sep 2023 565th bac0id 381 252 2,920ms 8 Jan 2025 566th aksyristos 381 321 14ms 11 Sep 2023 567th dokutan 381 591 121ms 12 Dec 2025 568th nyoshe 380 197 2ms 19 Sep 2023 569th janAkali 🇷🇺 373 323 369ms 5 days ago 570th msbranicky 368 591 2ms 1 Sep 2023 571st elgan65536 🇺🇸 367 204 2ms 22 days ago 572nd msbranicky 366 625 85ms 1 Sep 2023 573rd MeWhenI 🇻🇦 363 559 3ms 16 Aug 2024 574th madex 🇩🇪 361 207 2ms 3 Jul 2024 574th luuumine 🇫🇷 361 207 2ms 26 Nov 2025 576th dokutan 357 568 4ms 12 Aug 2024 577th emplv 🇱🇻 356 259 57ms 20 Oct 2023 578th RaBa21 🇭🇺 355 344 20ms 1 Aug 2025 579th Natanaelel 🇸🇪 353 212 1ms 4 Sep 2023 579th iczelia 🇩🇪 353 212 1ms 17 Oct 2025 581st rak1507 🇬🇧 352 347 49ms 1 Sep 2023 582nd MichalMarsalek 🇨🇿 352 1,448 5ms 1 Sep 2023 583rd Ripick 351 343 311ms 14 Jul 2024 584th MeWhenI 🇻🇦 349 578 30ms 6 Sep 2023 585th CaedenHarper 🇨🇦 348 215 3ms 30 Jan 2025 586th logvp 343 218 1ms 1 Feb 2024 587th MeWhenI 🇻🇦 343 492 41ms 30 Aug 2024 588th Yewzir 🇧🇪 341 219 2ms 7 Nov 2023 589th snoozingnewt 🇨🇦 340 220 2ms 17 Feb 2026 590th janbehrens 🇩🇪 337 222 1ms 30 Dec 2023 591st LostSyntax21 🇬🇧 337 363 35ms 23 Oct 2025 591st Andrey2001 337 363 21ms 2 days ago 593rd dokutan 337 568 6ms 5 Jun 2024 594th dokutan 337 580 2ms 3 Dec 2025 595th MateuszPietrzak 🇵🇱 336 286 2,889ms 17 Jan 2024 596th rifatx 335 223 1ms 16 Jul 2024 597th Maximizer02 332 578 5ms 22 Mar 2024 598th codereport 🇨🇦 331 226 1ms 18 Apr 2025 599th Stanbroek 330 291 79ms 18 Sep 2023 600th gastropner 329 227 1ms 17 Jul 2025 601st dokutan 327 665 2ms 12 Mar 2025 602nd KatieLG 🇬🇧 325 783 1ms 2 Sep 2023 602nd snoozingnewt 🇨🇦 325 783 1ms 7 Sep 2023 602nd Shanethegamer 🇺🇸 325 783 1ms 16 Jan 2024 602nd HumanoidCPU 325 783 1ms 16 Apr 2024 602nd CaedenHarper 🇨🇦 325 783 1ms 22 Jan 2025 607th msbranicky 324 623 28ms 21 Sep 2023 608th KatieLG-Transpiler 🇬🇧 324 784 1ms 2 Sep 2023 608th Mabeloid 🇳🇴 324 784 1ms 21 Sep 2024 610th msbranicky 324 785 1ms 20 Sep 2023 611th frankgraziano 323 318 4,912ms 11 Apr 2025 612th Mabeloid 🇳🇴 322 232 1ms 15 Oct 2025 613th msbranicky 322 609 86ms 13 Sep 2023 614th frankgraziano 318 570 6ms 12 Feb 2026 615th bac0id 317 236 2ms 8 Jan 2025 616th trinityy-7 316 237 1ms 10 Oct 2023 617th TheEric0802 🇩🇪 314 622 3ms 22 Sep 2023 618th peachey2k2 312 240 2ms 22 Nov 2025 619th msbranicky 312 614 8ms 24 Dec 2023 620th c0d3-4-F00d 🇩🇪 310 241 2ms 4 Dec 2023 621st helbling 🇨🇭 309 242 1ms 25 Jul 2024 622nd Martymoose98 306 244 1ms 30 May 2025 622nd prestosilver 🇺🇸 306 244 2ms 6 days ago 624th KatieLG 🇬🇧 306 712 3ms 22 Aug 2024 625th dokutan 298 788 3ms 1 Aug 2024 625th Shanethegamer 🇺🇸 298 788 3ms 6 Dec 2024 625th CaedenHarper 🇨🇦 298 788 3ms 20 Jan 2025 625th BREMAUCY 🇫🇷 298 788 3ms 13 Aug 2025 625th fuzzylojik-golf 🇺🇸 298 788 3ms 7 Sep 2025 625th JOrE20 298 788 3ms 29 Jan 2026 631st gigaprofisi 🇺🇸 294 254 2ms 16 Jul 2025 632nd Shanethegamer 🇺🇸 294 776 114ms 1 Sep 2023 632nd MeWhenI 🇻🇦 294 776 100ms 1 Sep 2023 632nd KatieLG 🇬🇧 294 776 77ms 2 Sep 2023 632nd KatieLG-Transpiler 🇬🇧 294 776 75ms 2 Sep 2023 632nd snoozingnewt 🇨🇦 294 776 74ms 11 Oct 2023 632nd HumanoidCPU 294 776 76ms 16 Apr 2024 632nd Mabeloid 🇳🇴 294 776 69ms 21 Sep 2024 632nd CaedenHarper 🇨🇦 294 776 88ms 20 Jan 2025 632nd gigaprofisi 🇺🇸 294 776 70ms 13 Nov 2025 First Prev 561–640 of 1,442 Next Last