The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 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 481st Shanethegamer 🇺🇸 481 775 3ms 7 Feb 2026 481st SuperFola 481 775 3ms 19 Feb 2026 481st CaedenHarper 🇨🇦 481 775 2ms 3 days ago 484th HumanoidCPU 480 776 3ms 1 Jan 2026 484th KatieLG 🇬🇧 480 776 3ms 21 Feb 2026 486th Babafaba 477 241 541ms 30 Oct 2025 487th JohandeRuiter 🇳🇱 476 157 2ms 29 Sep 2023 488th Natanaelel 🇸🇪 476 177 1,387ms 1 Sep 2023 489th annaproxy 476 280 378ms 24 Sep 2023 490th GolfingSuccess 🇬🇷 473 154 44ms 1 Sep 2023 490th emgordon154 473 154 53ms 1 Feb 2026 492nd mbittner20 472 259 11ms 17 Jul 2024 493rd stertooy 🇧🇪 470 260 51ms 16 Jun 2024 494th inventshah 470 541 3ms 1 Sep 2023 494th IanUtley 470 541 2ms 1 Sep 2023 494th MeWhenI 🇻🇦 470 541 2ms 3 Sep 2023 494th retrohun 470 541 2ms 6 Sep 2023 494th sisyphus-ppcg 🇦🇺 470 541 2ms 21 Sep 2023 494th Steffan153 🇫🇮 470 541 2ms 23 Sep 2023 494th dokutan 470 541 3ms 3 Oct 2023 494th neel11235813 470 541 2ms 22 Oct 2023 494th galloj 🇨🇿 470 541 2ms 24 Nov 2023 494th kritixilithos 470 541 2ms 1 Jun 2024 494th stefangimmillaro 470 541 2ms 14 Jul 2025 505th KatieLG-Transpiler 🇬🇧 470 838 10ms 2 Sep 2023 506th FlorianCassayre 🇫🇷 469 303 426ms 2 Sep 2023 507th error256 469 542 2ms 31 May 2024 507th fuzzylojik-golf 🇺🇸 469 542 2ms 8 Jul 2025 509th postie77 468 285 436ms 6 Sep 2023 510th weliveinhell 🇭🇹 468 543 2ms 6 Jan 2024 511th madex 🇩🇪 467 208 36ms 3 Jul 2024 512th Andrey-Plotnikov 465 264 9ms 26 Jun 2025 513th jtaxen 461 265 38ms 14 May 2024 514th YAJUE114514 460 266 380ms 14 Dec 2025 515th weliveinhell 🇭🇹 457 202 63ms 6 Jan 2024 516th emgordon154 456 494 106ms 8 Dec 2025 517th yuchuehw 455 269 10ms 26 Jan 2024 517th inverseLorentz 🇦🇺 455 269 10ms 20 Feb 2024 519th madex 🇩🇪 455 270 10ms 1 Jul 2024 520th Natanaelel 🇸🇪 450 162 35ms 28 Nov 2023 521st GolfingSuccess 🇬🇷 448 167 2ms 1 Sep 2023 522nd alemelis 448 273 442ms 9 Sep 2024 522nd hiichbindermax 448 273 10ms 13 Feb 2025 524th IISResetMe 444 250 405ms 24 Nov 2025 525th emgordon154 443 283 5ms 10 Jan 2025 526th AdrienHache 🇫🇷 439 520 93ms 22 Feb 2024 527th GolfingSuccess 🇬🇷 436 466 4ms 19 Aug 2024 528th TheZwierzLF 🇵🇱 430 226 36ms 6 Jan 2026 529th emgordon154 427 476 4ms 30 Aug 2024 530th HumanoidCPU 427 773 3ms 12 Dec 2024 530th dokutan 427 773 3ms 12 Dec 2024 530th KatieLG 🇬🇧 427 773 3ms 3 Jan 2025 530th Shanethegamer 🇺🇸 427 773 3ms 11 Jan 2025 530th BREMAUCY 🇫🇷 427 773 3ms 14 Jan 2025 530th CaedenHarper 🇨🇦 427 773 3ms 22 Jan 2025 530th JOrE20 427 773 4ms 30 Nov 2025 537th msbranicky 423 932 11ms 19 Sep 2023 538th ZakkkkAttackkkk 🇵🇭 422 177 2ms 24 Feb 2025 539th snyderek 🇺🇸 421 228 61ms 4 Feb 2025 540th bobbysq 420 291 11ms 20 May 2024 541st Yewzir 🇧🇪 420 317 423ms 17 Oct 2024 542nd una-ada 🇺🇸 418 294 9ms 5 Sep 2023 543rd Yewzir 🇧🇪 417 459 7ms 4 Apr 2024 544th brimstonetrader 416 294 88ms 10 Jan 2024 545th KatieLG-Transpiler 🇬🇧 413 802 2ms 2 Sep 2023 546th Natanaelel 🇸🇪 412 465 153ms 9 Jun 2025 547th typeswitch-dev 🇵🇹 411 571 3ms 1 Sep 2023 548th ndren 409 127 56ms 17 Jun 2024 549th madex 🇩🇪 407 327 420ms 3 May 2025 550th aaronze 🇦🇺 405 240 35ms 22 Sep 2023 551st jerrandolph 405 356 301ms 22 Sep 2025 552nd jacobly0 🇺🇸 400 187 1ms 1 Sep 2023 553rd janbehrens 🇩🇪 398 241 65ms 30 Dec 2023 554th error256 396 544 1,023ms 31 May 2024 554th dokutan 396 544 1,023ms 8 Apr 2025 556th dokutan 396 577 73ms 12 Dec 2025 557th hellwue 393 311 17ms 10 Sep 2024 558th weliveinhell 🇭🇹 391 550 1,024ms 6 Jan 2024 559th msbranicky 389 848 6ms 13 Jan 2025 560th MeWhenI 🇻🇦 388 561 2ms 1 Sep 2023 First Prev 481–560 of 1,441 Next Last