The Calendar hole will go live in approximately 2 days. Why not try and solve it ahead of time?
Inventory Sequence 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 480th GrayJoKing 🇦🇺 829 39 3ms 21 Nov 2022 480th nwellnhof 🇩🇪 829 39 3ms 15 Jul 2023 483rd GrayJoKing 🇦🇺 829 73 4ms 3 Dec 2022 484th guilhem-roy 🇫🇷 828 63 35ms 21 Nov 2022 484th jakobkordez 🇸🇮 828 63 11ms 22 Nov 2022 484th nstearns96 🇬🇧 828 63 31ms 6 Jan 2023 484th Tess2662 828 63 10ms 4 Mar 2023 484th 051 🇸🇬 828 63 15ms 24 Dec 2023 484th lhulinsky 828 63 34ms 23 Oct 2024 484th croc54 828 63 46ms 8 Jan 2025 484th andrewjc2000 828 63 36ms 29 Jul 2025 484th KasperKivimaeki 🇫🇮 828 63 29ms 25 Oct 2025 493rd RYNO8 828 71 2ms 4 Sep 2023 494th edsrzf 🇳🇿 826 90 56ms 10 Feb 2025 494th kg583 🇺🇸 826 90 56ms 27 Aug 2025 496th ovs-code 🇩🇪 825 67 3ms 9 Oct 2023 497th Emutis 🇱🇹 825 91 396ms 16 Aug 2025 498th coreynash 823 60 10ms 19 Oct 2023 498th helbling 🇨🇭 823 60 10ms 13 Mar 2024 500th emplv 🇱🇻 823 105 25ms 21 Nov 2022 501st Natanaelel 🇸🇪 822 38 129ms 20 Feb 2023 502nd sisyphus-ppcg 🇦🇺 821 44 37ms 22 Nov 2022 503rd Shanethegamer 🇺🇸 821 79 98ms 22 Nov 2022 504th GrayJoKing 🇦🇺 820 49 6ms 21 Nov 2022 504th DialFrost 🇸🇬 820 49 6ms 24 May 2025 506th DialFrost 🇸🇬 820 79 175ms 8 Aug 2024 506th Natanaelel 🇸🇪 820 79 168ms 31 May 2025 508th MeWhenI 🇻🇦 820 168 1,682ms 7 Nov 2025 509th Shanethegamer 🇺🇸 819 105 118ms 22 Nov 2022 509th mousetail 🇳🇱 819 105 129ms 12 Jan 2024 511th Shanethegamer 🇺🇸 819 116 271ms 20 Nov 2022 511th KasperKivimaeki 🇫🇮 819 116 255ms 3 Oct 2025 513th MeWhenI 🇻🇦 819 171 473ms 30 Mar 2025 514th sean-niemann 🇺🇸 817 52 129ms 8 Jan 2025 515th clockworknazo 817 76 2ms 23 Nov 2022 516th Shanethegamer 🇺🇸 816 47 1,081ms 21 Nov 2022 517th ovs-code 🇩🇪 816 169 1,739ms 14 Sep 2025 518th FlorianCassayre 🇫🇷 815 64 39ms 6 Jan 2023 518th CedricGebistorf 815 64 36ms 4 May 2023 518th cros107 🇦🇺 815 64 35ms 5 Oct 2023 518th logvp 815 64 31ms 3 Jan 2024 518th namelessiw 815 64 32ms 10 Jan 2024 518th jmfk 815 64 40ms 5 Apr 2024 518th hiichbindermax 815 64 36ms 4 Sep 2024 525th MeWhenI 🇻🇦 815 81 120ms 23 Nov 2022 526th janbehrens 🇩🇪 813 46 147ms 20 Nov 2022 527th bac0id 813 94 58ms 23 Feb 2024 528th antimon2 🇯🇵 812 61 2,039ms 20 Nov 2022 528th commandblockguy 🇺🇸 812 61 377ms 15 Jan 2024 528th Shanethegamer 🇺🇸 812 61 342ms 16 Jan 2024 528th KatieLG 🇬🇧 812 61 359ms 19 Oct 2025 532nd edsrzf 🇳🇿 811 106 130ms 16 Nov 2024 533rd CaedenHarper 🇨🇦 810 54 757ms 6 Sep 2025 534th SirBogman 🇺🇸 809 179 12ms 22 Nov 2022 535th Lydxn 🇨🇦 808 40 6ms 24 Jun 2023 536th edsrzf 🇳🇿 807 75 4ms 10 Nov 2025 537th pandapawskat 806 73 2ms 6 Dec 2022 537th elgan65536 806 73 2ms 5 Mar 2024 537th blaztoma 🇱🇹 806 73 2ms 16 Aug 2025 537th Emutis 🇱🇹 806 73 2ms 16 Aug 2025 541st snyderek 🇺🇸 806 77 2ms 19 Jan 2025 542nd marshallward 🇺🇸 805 82 39ms 20 Jun 2023 542nd stefangimmillaro 805 82 3,234ms 7 Nov 2024 544th CaedenHarper 🇨🇦 805 118 269ms 4 Nov 2025 545th janlelis 803 45 36ms 8 Dec 2023 545th DialFrost 🇸🇬 803 45 46ms 2 Aug 2024 545th snoozingnewt 🇨🇦 803 45 46ms 10 Oct 2025 545th emgordon154 803 45 48ms 17 Nov 2025 549th Shanethegamer 🇺🇸 803 50 2ms 19 Nov 2022 549th MeWhenI 🇻🇦 803 50 6ms 29 May 2023 551st mrnomm 803 65 16ms 6 Apr 2023 551st suwat513 803 65 37ms 19 Jun 2023 551st 2011-Chan-Ethan 803 65 38ms 10 Jul 2023 551st neihousaigaai 803 65 14ms 13 Feb 2024 551st Stockoh 🇫🇷 803 65 38ms 26 Apr 2024 551st CLOStrophobic 🇮🇹 803 65 10ms 31 Jan 2025 551st TheZwierzLF 🇵🇱 803 65 34ms 27 May 2025 551st Bmrl7 803 65 14ms 6 days ago 559th luuumine 🇫🇷 803 107 124ms 17 Nov 2025 560th ovs-code 🇩🇪 801 39 310ms 30 Dec 2023 First Prev 481–560 of 1,632 Next Last