The Calendar hole will go live in approximately 8 days. Why not try and solve it 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 718th msbranicky 241 795 111ms 11 Sep 2023 718th HumanoidCPU 241 795 104ms 16 Apr 2024 718th Mabeloid 🇳🇴 241 795 123ms 21 Sep 2024 718th CaedenHarper 🇨🇦 241 795 109ms 21 Jan 2025 725th msbranicky 240 596 1ms 10 Oct 2023 726th dokutan 240 695 4ms 26 Mar 2025 727th snoozingnewt 🇨🇦 240 798 105ms 4 Sep 2023 728th MeWhenI 🇻🇦 239 800 109ms 1 Sep 2023 729th thisishowmymindworks 🇳🇴 237 557 9ms 15 Jun 2024 729th voytxt 🇨🇿 237 557 9ms 7 Aug 2024 731st MeWhenI 🇻🇦 237 776 5ms 1 Sep 2023 731st Shanethegamer 🇺🇸 237 776 5ms 1 Sep 2023 731st KatieLG 🇬🇧 237 776 5ms 2 Sep 2023 731st KatieLG-Transpiler 🇬🇧 237 776 5ms 2 Sep 2023 731st scpchicken 🇵🇼 237 776 5ms 14 Nov 2023 731st HumanoidCPU 237 776 5ms 4 May 2024 731st dokutan 237 776 5ms 24 Jun 2024 731st Mabeloid 🇳🇴 237 776 5ms 21 Sep 2024 731st CaedenHarper 🇨🇦 237 776 6ms 20 Jan 2025 740th Jacob385 236 2,150 5ms 4 Aug 2024 741st snoozingnewt 🇨🇦 235 781 5ms 5 Sep 2023 742nd KatieLG 🇬🇧 235 797 8ms 2 Sep 2023 742nd KatieLG-Transpiler 🇬🇧 235 797 8ms 2 Sep 2023 744th coreynash 234 563 8ms 16 Feb 2024 745th two-bad 🇬🇧 233 565 8ms 25 Feb 2024 746th bac0id 233 587 356ms 9 Jan 2025 747th cbrt-x 233 821 109ms 9 Oct 2023 748th olleicua 🇺🇸 232 460 38ms 11 Apr 2024 749th ArmaanAS 232 567 9ms 23 Feb 2025 750th msbranicky 232 678 1,676ms 17 Sep 2025 751st dokutan 231 570 9ms 13 Mar 2025 752nd olleicua 🇺🇸 230 572 9ms 13 Feb 2024 753rd scpchicken 🇵🇼 229 454 4ms 1 Nov 2023 754th alexsave 228 577 9ms 4 Nov 2025 755th rgthree 228 579 9ms 5 Sep 2023 756th msbranicky 228 635 279ms 1 Sep 2023 757th BREMAUCY 🇫🇷 227 329 2ms 1 Nov 2025 758th dokutan 226 569 2ms 6 Jun 2024 759th FortuiteMan 🇫🇷 225 231 54ms 19 days ago 760th alphafalfa 225 572 14ms 1 Aug 2025 761st KatieLG-Transpiler 🇬🇧 225 2,253 5ms 2 Sep 2023 762nd voytxt 🇨🇿 224 609 369ms 4 Nov 2024 763rd KatieLG 🇬🇧 224 2,269 5ms 28 Sep 2024 764th iczelia 🇩🇪 223 591 8ms 8 Nov 2025 765th dokutan 221 584 801ms 12 days ago 766th msbranicky 221 617 351ms 8 Sep 2023 767th HumanoidCPU 220 571 395ms 12 Nov 2025 768th gifti258 220 585 189ms 13 Sep 2023 769th msbranicky 220 594 83ms 1 Sep 2023 770th moustave 219 559 9ms 26 Mar 2025 771st dokutan 219 574 119ms 13 Mar 2025 772nd msbranicky 219 601 8ms 8 Sep 2023 773rd dokutan 219 624 324ms 5 Jun 2024 774th Ripick 218 343 2ms 22 Oct 2025 775th dokutan 217 564 218ms 18 Mar 2025 776th Shanethegamer 🇺🇸 217 777 41ms 22 Aug 2024 776th KatieLG 🇬🇧 217 777 40ms 22 Aug 2024 776th dokutan 217 777 41ms 24 Aug 2024 776th HumanoidCPU 217 777 39ms 25 Aug 2024 776th Mabeloid 🇳🇴 217 777 41ms 21 Sep 2024 776th error256 217 777 42ms 10 Jan 2025 776th CaedenHarper 🇨🇦 217 777 39ms 22 Jan 2025 776th gigaprofisi 🇺🇸 217 777 40ms 5 Nov 2025 784th TheZwierzLF 🇵🇱 216 346 2ms 27 days ago 785th msbranicky 216 580 443ms 16 Jan 2024 786th msbranicky 216 678 393ms 8 Sep 2023 787th Shanethegamer 🇺🇸 215 775 3ms 1 Sep 2023 787th CaedenHarper 🇨🇦 215 775 3ms 22 Jan 2025 789th MeWhenI 🇻🇦 215 776 3ms 1 Sep 2023 789th KatieLG-Transpiler 🇬🇧 215 776 4ms 2 Sep 2023 789th KatieLG 🇬🇧 215 776 4ms 28 Sep 2024 792nd CommandLeo 🇮🇹 214 570 10ms 21 days ago 793rd msbranicky 214 571 185ms 15 Jan 2024 794th HumanoidCPU 214 572 11ms 12 Nov 2025 795th MichalMarsalek 🇨🇿 211 570 124ms 1 Sep 2023 796th msbranicky 211 580 11ms 1 Sep 2023 797th dokutan 211 686 250ms 10 days ago 798th snoozingnewt 🇨🇦 211 791 4ms 2 Sep 2023 798th HumanoidCPU 211 791 3ms 16 Apr 2024 798th Mabeloid 🇳🇴 211 791 4ms 21 Sep 2024 First Prev 721–800 of 1,370 Next Last