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?
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 480th croc54 481 254 51ms 30 Jan 2025 482nd Shanethegamer 🇺🇸 481 775 3ms 7 Feb 2026 482nd SuperFola 481 775 3ms 19 Feb 2026 482nd CaedenHarper 🇨🇦 481 775 2ms 6 days ago 485th HumanoidCPU 480 776 3ms 1 Jan 2026 485th KatieLG 🇬🇧 480 776 3ms 21 Feb 2026 487th Babafaba 477 241 541ms 30 Oct 2025 488th JohandeRuiter 🇳🇱 476 157 2ms 29 Sep 2023 489th Natanaelel 🇸🇪 476 177 1,387ms 1 Sep 2023 490th annaproxy 476 280 378ms 24 Sep 2023 491st GolfingSuccess 🇬🇷 473 154 44ms 1 Sep 2023 491st emgordon154 473 154 53ms 1 Feb 2026 493rd mbittner20 472 259 11ms 17 Jul 2024 494th stertooy 🇧🇪 470 260 51ms 16 Jun 2024 495th inventshah 470 541 3ms 1 Sep 2023 495th IanUtley 470 541 2ms 1 Sep 2023 495th MeWhenI 🇻🇦 470 541 2ms 3 Sep 2023 495th retrohun 470 541 2ms 6 Sep 2023 495th sisyphus-ppcg 🇦🇺 470 541 2ms 21 Sep 2023 495th Steffan153 🇫🇮 470 541 2ms 23 Sep 2023 495th dokutan 470 541 3ms 3 Oct 2023 495th neel11235813 470 541 2ms 22 Oct 2023 495th galloj 🇨🇿 470 541 2ms 24 Nov 2023 495th kritixilithos 470 541 2ms 1 Jun 2024 495th stefangimmillaro 470 541 2ms 14 Jul 2025 506th KatieLG-Transpiler 🇬🇧 470 838 10ms 2 Sep 2023 507th FlorianCassayre 🇫🇷 469 303 426ms 2 Sep 2023 508th error256 469 542 2ms 31 May 2024 508th fuzzylojik-golf 🇺🇸 469 542 2ms 8 Jul 2025 510th postie77 468 285 436ms 6 Sep 2023 511th weliveinhell 🇭🇹 468 543 2ms 6 Jan 2024 512th madex 🇩🇪 467 208 36ms 3 Jul 2024 513th Andrey-Plotnikov 465 264 13ms 26 Jun 2025 514th jtaxen 461 265 38ms 14 May 2024 515th YAJUE114514 460 266 380ms 14 Dec 2025 516th weliveinhell 🇭🇹 457 202 63ms 6 Jan 2024 517th emgordon154 456 494 106ms 8 Dec 2025 518th yuchuehw 455 269 10ms 26 Jan 2024 518th inverseLorentz 🇦🇺 455 269 10ms 20 Feb 2024 520th madex 🇩🇪 455 270 11ms 1 Jul 2024 521st Natanaelel 🇸🇪 450 162 35ms 28 Nov 2023 522nd GolfingSuccess 🇬🇷 448 167 2ms 1 Sep 2023 523rd alemelis 448 273 442ms 9 Sep 2024 523rd hiichbindermax 448 273 10ms 13 Feb 2025 525th IISResetMe 444 250 405ms 24 Nov 2025 526th emgordon154 443 283 5ms 10 Jan 2025 527th AdrienHache 🇫🇷 439 520 93ms 22 Feb 2024 528th GolfingSuccess 🇬🇷 436 466 4ms 19 Aug 2024 529th TheZwierzLF 🇵🇱 430 226 36ms 6 Jan 2026 530th emgordon154 427 476 4ms 30 Aug 2024 531st HumanoidCPU 427 773 3ms 12 Dec 2024 531st dokutan 427 773 3ms 12 Dec 2024 531st KatieLG 🇬🇧 427 773 3ms 3 Jan 2025 531st Shanethegamer 🇺🇸 427 773 3ms 11 Jan 2025 531st BREMAUCY 🇫🇷 427 773 3ms 14 Jan 2025 531st CaedenHarper 🇨🇦 427 773 3ms 22 Jan 2025 531st JOrE20 427 773 4ms 30 Nov 2025 538th msbranicky 423 932 11ms 19 Sep 2023 539th ZakkkkAttackkkk 🇵🇭 422 177 2ms 24 Feb 2025 540th Solathian 422 247 3ms 9 hours ago 541st snyderek 🇺🇸 421 228 69ms 4 Feb 2025 542nd bobbysq 420 291 11ms 20 May 2024 543rd Yewzir 🇧🇪 420 317 423ms 17 Oct 2024 544th una-ada 🇺🇸 418 294 12ms 5 Sep 2023 545th Yewzir 🇧🇪 417 459 7ms 4 Apr 2024 546th brimstonetrader 416 294 88ms 10 Jan 2024 547th KatieLG-Transpiler 🇬🇧 413 802 2ms 2 Sep 2023 548th Natanaelel 🇸🇪 412 465 153ms 9 Jun 2025 549th typeswitch-dev 🇵🇹 411 571 3ms 1 Sep 2023 550th ndren 409 127 56ms 17 Jun 2024 551st madex 🇩🇪 407 327 420ms 3 May 2025 552nd aaronze 🇦🇺 405 240 35ms 22 Sep 2023 553rd jerrandolph 405 356 301ms 22 Sep 2025 554th jacobly0 🇺🇸 400 187 1ms 1 Sep 2023 555th janbehrens 🇩🇪 398 241 69ms 30 Dec 2023 556th error256 396 544 1,023ms 31 May 2024 556th dokutan 396 544 1,023ms 8 Apr 2025 558th dokutan 396 577 73ms 12 Dec 2025 559th hellwue 393 311 17ms 10 Sep 2024 560th weliveinhell 🇭🇹 391 550 1,024ms 6 Jan 2024 First Prev 481–560 of 1,442 Next Last