The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Inventory Sequence 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 480th mousetail 🇳🇱 819 105 129ms 12 Jan 2024 482nd Shanethegamer 🇺🇸 819 116 271ms 20 Nov 2022 482nd KasperKivimaeki 🇫🇮 819 116 255ms 3 Oct 2025 484th MeWhenI 🇻🇦 819 171 473ms 30 Mar 2025 485th clockworknazo 817 76 2ms 23 Nov 2022 486th ovs-code 🇩🇪 816 33 423ms 30 Dec 2023 487th Shanethegamer 🇺🇸 816 47 1,081ms 21 Nov 2022 488th RYNO8 816 71 2ms 4 Sep 2023 489th ovs-code 🇩🇪 816 169 1,739ms 14 Sep 2025 490th MeWhenI 🇻🇦 814 81 120ms 23 Nov 2022 491st janbehrens 🇩🇪 813 46 171ms 20 Nov 2022 492nd GrayJoKing 🇦🇺 813 48 128ms 13 Aug 2024 492nd emplv 🇱🇻 813 48 125ms 1 Nov 2024 494th bac0id 813 94 60ms 23 Feb 2024 495th edsrzf 🇳🇿 811 106 130ms 16 Nov 2024 496th CaedenHarper 🇨🇦 810 54 757ms 6 Sep 2025 497th SirBogman 🇺🇸 809 179 12ms 22 Nov 2022 498th Lydxn 🇨🇦 808 40 6ms 24 Jun 2023 499th GrayJoKing 🇦🇺 808 58 374ms 15 Jan 2024 499th SirBogman 🇺🇸 808 58 446ms 15 Jan 2024 499th AlephSquirrel 808 58 357ms 16 Jan 2024 502nd thehylian 808 61 34ms 11 Jan 2023 502nd galloj 🇨🇿 808 61 33ms 4 Mar 2023 502nd commandblockguy 🇺🇸 808 61 29ms 17 Nov 2023 502nd mathisfun271 808 61 34ms 13 Feb 2024 502nd BREMAUCY 🇫🇷 808 61 32ms 7 Mar 2024 502nd stertooy 🇧🇪 808 61 34ms 10 Jun 2024 502nd tri1212 🇻🇳 808 61 39ms 30 Jun 2024 502nd Alex-x90 🇺🇸 808 61 11ms 20 Nov 2024 502nd KatieLG 🇬🇧 808 61 33ms 19 Oct 2025 502nd solisolu 808 61 29ms 15 days ago 512th snyderek 🇺🇸 806 77 2ms 19 Jan 2025 513th marshallward 🇺🇸 805 82 39ms 20 Jun 2023 513th stefangimmillaro 805 82 3,927ms 7 Nov 2024 515th CaedenHarper 🇨🇦 805 118 269ms 4 Nov 2025 516th janlelis 803 45 43ms 8 Dec 2023 516th DialFrost 🇸🇬 803 45 53ms 2 Aug 2024 516th snoozingnewt 🇨🇦 803 45 52ms 10 Oct 2025 516th emgordon154 803 45 49ms 17 Nov 2025 520th Shanethegamer 🇺🇸 803 50 2ms 19 Nov 2022 520th MeWhenI 🇻🇦 803 50 5ms 29 May 2023 522nd luuumine 🇫🇷 803 107 124ms 17 Nov 2025 523rd SirBogman 🇺🇸 800 25 85ms 22 Nov 2022 524th emgordon154 799 48 988ms 18 Nov 2024 525th MeWhenI 🇻🇦 799 69 92ms 24 Nov 2022 526th bac0id 798 94 376ms 30 Jun 2024 527th blaztoma 🇱🇹 798 119 269ms 16 Aug 2025 528th Shanethegamer 🇺🇸 797 62 9ms 19 Nov 2022 528th jared-hughes 797 62 10ms 16 Mar 2023 528th raphaelimahorn 797 62 9ms 24 Mar 2023 528th Maznek 797 62 9ms 28 Jun 2023 528th unfinishedprogram 797 62 10ms 5 Jul 2023 533rd DialFrost 🇸🇬 796 47 15ms 25 Sep 2024 534th blaztoma 🇱🇹 796 96 61ms 17 Aug 2025 535th MeWhenI 🇻🇦 796 108 137ms 22 Jul 2024 536th rak1507 🇬🇧 795 62 29ms 22 Nov 2022 536th fourth-bit 795 62 33ms 7 Dec 2022 536th SniperSmiley 🇺🇸 795 62 34ms 10 Dec 2022 536th Fracture17 795 62 33ms 14 Apr 2023 536th quimey 795 62 33ms 23 Jun 2023 536th dranjohn 795 62 48ms 11 Sep 2023 536th RedzGoose 🇦🇺 795 62 13ms 17 Jun 2024 536th smilesformiles3 795 62 14ms 21 Jun 2025 544th Shanethegamer 🇺🇸 795 83 3,826ms 28 Oct 2024 545th inventshah 794 59 413ms 22 Jan 2024 545th CaedenHarper 🇨🇦 794 59 380ms 30 Dec 2024 547th pandapawskat 793 73 2ms 6 Dec 2022 547th elgan65536 793 73 2ms 5 Mar 2024 547th blaztoma 🇱🇹 793 73 2ms 16 Aug 2025 547th Emutis 🇱🇹 793 73 2ms 16 Aug 2025 551st albanian-laundromat 791 177 556ms 15 Oct 2025 552nd emplv 🇱🇻 790 82 99ms 25 Nov 2022 552nd tobeannouncd 790 82 169ms 21 May 2024 554th rucin93 🇵🇱 789 70 17ms 26 Jul 2025 555th 09cf 789 109 124ms 26 Sep 2023 556th Natanaelel 🇸🇪 788 41 6ms 30 Dec 2022 556th o0lit3 🇺🇸 788 41 6ms 20 Jun 2023 558th MeWhenI 🇻🇦 786 46 54ms 24 Nov 2022 558th m-tkach 🇺🇦 786 46 46ms 31 Aug 2023 560th alemelis 785 62 2,420ms 20 Sep 2024 First Prev 481–560 of 1,612 Next Last