The Calendar hole will go live in approximately 54 mins. Why not try and solve it ahead of time?
Rijndael S-box in all languages in chars. 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 ArkScript 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 ArkScript 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 Chars Time Submitted 481st annaproxy 397 220 116ms 4 Oct 2023 482nd OllieBoyne 🇬🇧 395 221 10ms 6 Jun 2024 483rd dokutan 394 262 750ms 30 Aug 2025 484th voytxt 🇨🇿 394 268 13ms 1 Sep 2023 485th weliveinhell 🇭🇹 394 550 15ms 6 Jan 2024 486th madex 🇩🇪 393 218 1,034ms 3 Jul 2024 487th TheZwierzLF 🇵🇱 393 228 637ms 24 days ago 488th madex 🇩🇪 392 208 36ms 3 Jul 2024 489th commandblockguy 🇺🇸 392 223 39ms 23 Mar 2025 490th MeWhenI 🇻🇦 392 365 41ms 30 Aug 2024 491st madex 🇩🇪 391 270 9ms 1 Jul 2024 492nd msbranicky 391 848 6ms 13 Jan 2025 493rd mathisfun271 385 227 10ms 16 Feb 2024 494th rgthree 385 274 12ms 6 Sep 2023 494th ArmaanAS 385 274 12ms 23 Feb 2025 496th amazingalek 384 359 374ms 84 mins ago 497th scpchicken 🇵🇼 383 228 119ms 2 Nov 2023 498th dokutan 383 591 96ms 19 days ago 499th cros107 🇦🇺 381 229 9ms 11 Nov 2025 500th Languag3 380 230 11ms 15 Oct 2024 501st AdrienHache 🇫🇷 379 392 77ms 22 Feb 2024 502nd fgrosshans 🇫🇷 378 231 23ms 1 Sep 2023 503rd alemelis 378 271 461ms 8 Sep 2024 504th GolfingSuccess 🇬🇷 377 167 2ms 1 Sep 2023 505th targrik 375 282 16ms 7 Feb 2025 506th snyderek 🇺🇸 369 228 65ms 4 Feb 2025 507th ahmetdemirag 🇨🇾 369 237 106ms 19 Feb 2025 508th qpwoeirut 365 239 44ms 19 Sep 2025 509th MeWhenI 🇻🇦 365 559 3ms 16 Aug 2024 510th m42km 364 240 54ms 4 Feb 2024 511th edsrzf 🇳🇿 364 367 13ms 22 Oct 2024 512th Natanaelel 🇸🇪 362 195 175ms 22 Apr 2025 513th adamnielson42 🇺🇸 361 242 10ms 20 Dec 2023 513th madex 🇩🇪 361 242 10ms 2 Jul 2024 515th TheZwierzLF 🇵🇱 359 227 36ms 10 days ago 516th una-ada 🇺🇸 359 294 12ms 5 Sep 2023 517th TheZwierzLF 🇵🇱 358 244 10ms 24 days ago 518th Yewzir 🇧🇪 357 236 404ms 27 Jan 2024 519th ZakkkkAttackkkk 🇵🇭 356 177 2ms 24 Feb 2025 520th two-bad 🇬🇧 356 297 11ms 22 Feb 2024 521st nstearns96 🇬🇧 352 248 10ms 20 Sep 2023 522nd HumanoidCPU 352 300 14ms 28 May 2024 523rd StinkAndShityAura 351 249 10ms 17 Nov 2024 524th janbehrens 🇩🇪 349 241 68ms 30 Dec 2023 525th Ripick 348 343 285ms 14 Jul 2024 526th croc54 344 254 52ms 30 Jan 2025 526th rucin93 🇵🇱 344 254 34ms 31 May 2025 528th aaronze 🇦🇺 340 240 37ms 22 Sep 2023 529th jacobly0 🇺🇸 337 187 3ms 1 Sep 2023 530th mbittner20 337 259 10ms 17 Jul 2024 531st KatieLG 🇬🇧 337 526 4ms 7 Jun 2025 532nd stertooy 🇧🇪 336 260 52ms 16 Jun 2024 533rd bac0id 334 252 2,500ms 8 Jan 2025 534th IISResetMe 332 250 396ms 24 Nov 2025 535th Flekay 🇩🇪 332 263 10ms 11 Jul 2025 536th jtaxen 330 265 39ms 14 May 2024 537th YAJUE114514 328 266 362ms 17 days ago 538th frankgraziano 328 318 4,912ms 11 Apr 2025 539th dokutan 327 405 77ms 19 Oct 2024 540th jared-hughes 325 194 2ms 7 Sep 2023 541st yuchuehw 325 269 10ms 26 Jan 2024 541st inverseLorentz 🇦🇺 325 269 15ms 20 Feb 2024 543rd msbranicky 325 609 80ms 13 Sep 2023 544th msbranicky 325 623 27ms 21 Sep 2023 545th msbranicky 324 546 3ms 1 Sep 2023 546th scpchicken 🇵🇼 323 326 4ms 1 Nov 2023 547th dokutan 322 328 10ms 13 Mar 2025 548th nyoshe 320 197 2ms 19 Sep 2023 549th hiichbindermax 320 273 9ms 13 Feb 2025 550th dokutan 320 328 788ms 19 days ago 551st dokutan 319 528 11ms 9 Apr 2025 552nd dokutan 317 451 40ms 4 Oct 2024 553rd MeWhenI 🇻🇦 315 424 6ms 9 May 2024 554th HumanoidCPU 314 416 2ms 20 Nov 2025 555th emplv 🇱🇻 313 259 57ms 20 Oct 2023 556th snoozingnewt 🇨🇦 311 419 2ms 23 Sep 2025 557th MeWhenI 🇻🇦 309 422 3ms 1 Nov 2023 558th elgan65536 304 207 2ms 7 Apr 2024 558th madex 🇩🇪 304 207 2ms 3 Jul 2024 558th luuumine 🇫🇷 304 207 2ms 26 Nov 2025 First Prev 481–560 of 1,348 Next Last