The Calendar hole will go live in approximately 11 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 880th Shanethegamer 🇺🇸 178 815 352ms 13 Sep 2023 880th KatieLG 🇬🇧 178 815 262ms 23 Mar 2024 880th HumanoidCPU 178 815 266ms 26 Aug 2024 884th KatieLG-Transpiler 🇬🇧 177 822 270ms 2 Sep 2023 885th jameswmccarty 175 698 10ms 14 Dec 2024 886th dokutan 175 759 4ms 6 Oct 2024 887th Jacob385 175 835 402ms 4 Aug 2024 888th ndren 174 598 3ms 2 Sep 2023 889th Shanethegamer 🇺🇸 174 786 349ms 1 Sep 2023 889th MeWhenI 🇻🇦 174 786 308ms 1 Sep 2023 889th Maximizer02 174 786 312ms 12 Mar 2024 889th KatieLG 🇬🇧 174 786 321ms 5 May 2024 889th Jacob385 174 786 317ms 18 Mar 2025 889th fuzzylojik-golf 🇺🇸 174 786 374ms 7 Sep 2025 889th Babafaba 174 786 379ms 30 Oct 2025 889th HumanoidCPU 174 786 359ms 9 Nov 2025 897th kkoenig 174 834 257ms 3 Jan 2024 898th Mabeloid 🇳🇴 174 835 260ms 21 Sep 2024 899th dokutan 173 606 735ms 15 Jul 2025 900th Adix-null 🇱🇹 173 790 355ms 10 Dec 2024 900th rollershutter 173 790 327ms 29 Jan 2025 900th heanyang1 173 790 355ms 23 May 2025 900th KasperKivimaeki 🇫🇮 173 790 337ms 2 Jul 2025 900th Blockyheadman 173 790 366ms 6 Nov 2025 905th rollershutter 173 847 346ms 29 Jan 2025 906th Shanethegamer 🇺🇸 172 771 4ms 8 May 2025 906th fuzzylojik-golf 🇺🇸 172 771 4ms 8 Jul 2025 908th Zach1031 172 795 371ms 27 days ago 909th MeWhenI 🇻🇦 171 773 4ms 1 Sep 2023 909th josh-h-90 171 773 4ms 8 Sep 2023 909th msbranicky 171 773 5ms 17 Sep 2023 909th snoozingnewt 🇨🇦 171 773 4ms 17 Sep 2023 909th satutalo 🇫🇮 171 773 4ms 25 Sep 2023 909th HumanoidCPU 171 773 4ms 16 Apr 2024 909th Mabeloid 🇳🇴 171 773 6ms 21 Sep 2024 909th CaedenHarper 🇨🇦 171 773 4ms 22 Jan 2025 917th Mabeloid 🇳🇴 171 800 375ms 21 Sep 2024 917th GolfingSuccess 🇬🇷 171 800 355ms 17 Oct 2024 917th aksyristos 171 800 333ms 18 Oct 2024 917th QeepQeep 171 800 369ms 10 Nov 2024 917th Quirkly-Quasar 171 800 366ms 23 Nov 2024 917th neel11235813 171 800 338ms 9 Dec 2024 917th Schmitt-Very-Cool 171 800 350ms 28 May 2025 917th JOrE-Softwares 171 800 364ms 1 Jun 2025 917th BREMAUCY 🇫🇷 171 800 350ms 7 Aug 2025 917th JOrE20 🇺🇸 171 800 354ms 6 Nov 2025 917th gigaprofisi 🇺🇸 171 800 317ms 13 Nov 2025 928th Mabeloid 🇳🇴 171 855 358ms 21 Sep 2024 929th unfinishedprogram 170 774 8ms 1 Sep 2023 929th KatieLG 🇬🇧 170 774 9ms 2 Sep 2023 929th zakariamouhid 170 774 9ms 3 Sep 2023 929th Shanethegamer 🇺🇸 170 774 9ms 13 Sep 2023 929th GeorgeStechman 🇬🇧 170 774 8ms 22 Nov 2023 934th hacker112 🇸🇪 170 776 9ms 22 Jun 2024 934th codingisgreatbutiamnot 170 776 9ms 7 Aug 2024 934th XenThe 🇬🇧 170 776 8ms 26 Jul 2025 937th acollett89 170 777 9ms 30 Jul 2025 938th yhm138 170 802 336ms 17 Feb 2025 939th adamnielson42 🇺🇸 170 803 348ms 3 Dec 2024 940th KatieLG-Transpiler 🇬🇧 170 804 354ms 2 Sep 2023 940th retrohun 170 804 345ms 18 Oct 2024 940th SB-945 170 804 353ms 30 Nov 2024 940th JunkIce 170 804 321ms 23 Jan 2025 940th olleicua 🇺🇸 170 804 323ms 23 Jan 2025 940th zt14427 170 804 339ms 11 Feb 2025 940th Ralac07 🇦🇺 170 804 361ms 18 Apr 2025 947th KatieLG 🇬🇧 170 938 1,688ms 13 Sep 2025 948th Shanethegamer 🇺🇸 169 774 72ms 1 Sep 2023 948th HumanoidCPU 169 774 71ms 9 May 2024 948th CaedenHarper 🇨🇦 169 774 72ms 22 Jan 2025 951st KatieLG-Transpiler 🇬🇧 169 866 367ms 2 Sep 2023 952nd MeWhenI 🇻🇦 168 778 75ms 1 Sep 2023 952nd Mabeloid 🇳🇴 168 778 71ms 21 Sep 2024 954th KatieLG-Transpiler 🇬🇧 168 783 9ms 2 Sep 2023 955th KatieLG 🇬🇧 168 788 4ms 2 Sep 2023 955th KatieLG-Transpiler 🇬🇧 168 788 4ms 2 Sep 2023 957th chunes3 🇺🇸 167 772 71ms 13 Sep 2023 957th Shanethegamer 🇺🇸 167 772 65ms 22 Nov 2024 959th HumanoidCPU 167 774 69ms 27 Jan 2025 960th Mabeloid 🇳🇴 167 791 9ms 21 Sep 2024 First Prev 881–960 of 1,368 Next Last