The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
CSS Colors 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 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 Chars Time Submitted 481st MathisBullinger 400 665 21ms 15 Nov 2021 482nd KasperKivimaeki 🇫🇮 400 773 2,823ms 19 Nov 2025 483rd nickspoons 🇳🇿 399 499 32ms 15 Apr 2023 484th lynn 399 775 68ms 12 Jan 2022 485th andersk 🇺🇸 398 623 183ms 6 Oct 2020 486th Seek64 🇩🇪 396 627 11ms 8 Oct 2024 487th GrayJoKing 🇦🇺 396 741 14ms 19 Jan 2023 488th hyvyys 394 675 10ms 18 Sep 2020 489th jared-hughes 394 695 2ms 12 Apr 2022 490th Bulmenisaurus 393 631 17ms 29 Jan 2025 491st sisyphus-ppcg 🇦🇺 392 634 19ms 11 Mar 2022 492nd lynn 391 783 462ms 23 Sep 2021 493rd sean-niemann 🇺🇸 390 805 190ms 18 Nov 2023 494th lynn 389 638 16ms 27 Jul 2021 495th edsrzf 🇳🇿 389 642 5ms 7 Nov 2025 496th jared-hughes 389 685 10ms 3 Aug 2022 497th stefangimmillaro 389 795 762ms 16 Sep 2023 498th MattShaile 387 688 9ms 9 Apr 2022 499th edsrzf 🇳🇿 387 728 24ms 23 Jun 2025 500th emplv 🇱🇻 387 860 7ms 2 Jul 2023 501st saito-ta 🇯🇵 385 650 34ms 3 Oct 2024 502nd AlephSquirrel 384 647 93ms 21 Jan 2024 503rd stefangimmillaro 384 818 244ms 11 Nov 2023 504th stefangimmillaro 383 648 20ms 29 Dec 2022 504th blaztoma 🇱🇹 383 648 10ms 9 Sep 2025 506th UnderKoen 🇳🇱 383 917 4ms 20 Sep 2023 507th olivermrose 🇺🇸 382 562 41ms 22 Sep 2021 508th CatsAreFluffy 382 697 14ms 1 Dec 2022 509th MeWhenI 🇻🇦 382 817 268ms 9 Feb 2023 510th stefangimmillaro 380 806 548ms 6 Oct 2025 511th edsrzf 🇳🇿 379 809 472ms 24 Sep 2025 512th stefangimmillaro 379 877 4ms 15 May 2022 513th ovs-code 🇩🇪 378 661 15ms 25 Sep 2022 514th janbehrens 🇩🇪 378 880 6ms 2 Jul 2023 515th emgordon154 376 619 139ms 6 Sep 2024 516th edsrzf 🇳🇿 374 737 24ms 28 May 2025 517th mathisfun271 373 665 10ms 5 Feb 2024 518th jared-hughes 372 668 11ms 7 Jan 2023 519th MeWhenI 🇻🇦 372 682 142ms 21 May 2024 520th BBoehm 🇩🇪 372 715 15ms 25 Dec 2020 521st radarek 🇵🇱 370 580 331ms 2 Jul 2025 522nd m-tkach 🇺🇦 370 600 1,109ms 3 Jan 2024 523rd jared-hughes 369 677 214ms 17 Jul 2022 524th lynn 369 741 3ms 7 Jan 2022 525th MeWhenI 🇻🇦 367 729 440ms 5 Mar 2022 526th MeWhenI 🇻🇦 367 808 7ms 12 Oct 2023 527th emgordon154 366 171 496ms 29 Apr 2025 528th stefangimmillaro 365 856 284ms 16 Sep 2023 529th KatieLG 🇬🇧 365 962 4ms 8 Jan 2023 530th janbehrens 🇩🇪 364 443 402ms 21 Nov 2021 531st lynn 363 759 9ms 7 Jan 2022 532nd jahakari 362 445 438ms 21 Nov 2021 533rd ovs-code 🇩🇪 362 593 61ms 9 Jul 2024 534th Shanethegamer 🇺🇸 362 738 696ms 5 Mar 2022 535th TeodorDyakov 🇧🇬 362 846 563ms 11 Sep 2025 536th Irratix 🇳🇱 359 597 36ms 5 Apr 2022 537th MeWhenI 🇻🇦 358 620 1,167ms 25 Mar 2024 538th dokutan 358 2,080 7ms 7 Sep 2023 539th lynn 357 712 144ms 26 Aug 2021 540th MeWhenI 🇻🇦 356 636 592ms 15 Feb 2023 541st Natanaelel 🇸🇪 355 605 167ms 27 May 2025 542nd kamenitxan 🇨🇿 354 187 278ms 8 Feb 2021 543rd Bubbler-4 352 565 35ms 8 Dec 2021 544th Starwort 🇬🇧 351 708 12ms 26 Sep 2023 545th dokutan 351 8,623 3ms 8 Jun 2023 546th SirBogman 🇺🇸 350 568 34ms 26 Aug 2022 547th tetrogem 349 763 15ms 23 Aug 2025 548th edsrzf 🇳🇿 348 681 799ms 3 Sep 2025 549th stefangimmillaro 347 639 1,217ms 14 Jul 2023 550th Yewzir 🇧🇪 347 856 10ms 16 Jan 2024 551st MeWhenI 🇻🇦 342 681 139ms 3 Aug 2024 552nd jared-hughes 341 630 42ms 12 Sep 2022 553rd MeWhenI 🇻🇦 340 979 5ms 28 May 2023 554th Shanethegamer 🇺🇸 337 987 4ms 2 Jul 2023 555th lynn 336 739 46ms 4 Sep 2021 556th lynn 336 745 99ms 9 Sep 2021 557th CaedenHarper 🇨🇦 336 929 270ms 4 Nov 2025 558th iTearo 🇷🇺 335 992 5ms 25 Dec 2020 559th CaedenHarper 🇨🇦 334 798 9ms 6 Nov 2025 560th antimon2 🇯🇵 332 682 548ms 22 Feb 2022 First Prev 481–560 of 1,251 Next Last
