The Calendar hole will go live in approximately 12 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 880th ShiraJoseph 🇺🇸 568 87 13ms 18 Feb 2023 880th Protothor 568 87 13ms 1 Jun 2025 883rd Yewzir 🇧🇪 566 135 83ms 9 Feb 2024 884th nwellnhof 🇩🇪 565 43 37ms 21 Nov 2022 885th emgordon154 564 37 10ms 14 Jun 2025 886th blaztoma 🇱🇹 564 68 936ms 3 Sep 2025 887th TaserTheFox 🇺🇸 562 73 2,319ms 7 Jun 2023 888th dokutan 561 88 14ms 28 Sep 2024 889th MarcMush 🇫🇷 559 87 431ms 3 Jan 2024 890th msbranicky 558 155 25ms 3 Jan 2024 891st msbranicky 552 89 91ms 15 Aug 2023 892nd tomh1012 552 136 470ms 14 Nov 2025 893rd klixel 🇨🇦 551 156 189ms 25 Feb 2025 894th dokutan 549 71 127ms 28 Sep 2024 895th two-bad 🇬🇧 549 90 327ms 24 Feb 2024 896th SirFireball3521 548 90 14ms 23 Jan 2023 896th yuchuehw 548 90 15ms 10 Feb 2024 896th robin-scragg 548 90 14ms 25 Oct 2025 899th msbranicky 547 145 374ms 9 Jan 2024 900th snoozingnewt 🇨🇦 546 90 90ms 17 Oct 2025 901st msbranicky 546 101 117ms 1 Jan 2024 902nd MeWhenI 🇻🇦 546 136 43ms 4 Sep 2024 903rd dokutan 545 114 45ms 1 Aug 2024 904th MeWhenI 🇻🇦 544 109 5ms 22 May 2023 905th LeeCamp 542 91 33ms 8 Jan 2023 905th aksyristos 542 91 978ms 17 Jan 2023 907th Yewzir 🇧🇪 540 139 330ms 11 Feb 2024 908th gigaprofisi 🇺🇸 537 92 114ms 1 Nov 2025 909th WillowWispy 536 92 10ms 17 Mar 2025 909th osNiko 🇧🇷 536 92 14ms 18 Aug 2025 911th snoozingnewt 🇨🇦 536 116 10ms 13 Oct 2025 912th snoozingnewt 🇨🇦 536 140 380ms 13 Oct 2025 913th adamnielson42 🇺🇸 533 47 312ms 29 Aug 2023 914th inverseLorentz 🇦🇺 530 93 16ms 7 Jan 2024 915th blaztoma 🇱🇹 529 92 253ms 3 Sep 2025 916th QuincyNash 🇺🇸 525 94 23ms 27 Nov 2022 917th Shanethegamer 🇺🇸 525 99 39ms 16 Dec 2022 918th HumanoidCPU 524 126 170ms 26 Jun 2024 919th dokutan 523 93 311ms 18 Mar 2025 920th dokutan 522 48 6ms 6 Mar 2025 921st TheCod-r 🇦🇶 520 95 12ms 26 Feb 2023 921st Ultra814 520 95 12ms 22 Aug 2025 923rd AlephSquirrel 520 100 14ms 10 Oct 2024 924th snoozingnewt 🇨🇦 520 106 103ms 13 Oct 2025 925th matejmatik123 🇸🇰 520 147 994ms 2 Oct 2025 926th madex 🇩🇪 516 70 42ms 13 Jun 2023 926th rvs314 516 70 85ms 24 Sep 2024 928th mousetail 🇳🇱 516 84 22ms 16 Sep 2024 929th adamreidsmith 514 96 15ms 16 Feb 2024 930th Shanethegamer 🇺🇸 511 91 96ms 7 Dec 2024 931st Andriamanitra 🇫🇮 509 71 38ms 26 Apr 2023 932nd RaBa21 🇭🇺 508 97 18ms 19 Jul 2025 933rd snoozingnewt 🇨🇦 505 157 419ms 13 Oct 2025 934th junkondo-jp 504 98 14ms 2 Jul 2024 935th Yewzir 🇧🇪 504 115 3ms 9 Feb 2024 936th TobyBoyne 🇬🇧 503 98 14ms 28 Nov 2022 936th TheLazySquid 503 98 14ms 23 Jan 2023 938th blaztoma 🇱🇹 502 110 2ms 2 Sep 2025 939th varhammer 🇷🇺 500 104 86ms 13 Dec 2023 940th snoozingnewt 🇨🇦 499 130 106ms 13 Oct 2025 941st scpchicken 🇵🇼 497 65 14ms 18 Jan 2023 942nd snoozingnewt 🇨🇦 496 133 131ms 13 Oct 2025 943rd snoozingnewt 🇨🇦 492 76 11ms 13 Oct 2025 944th msbranicky 489 101 9ms 8 Jan 2024 945th Yewzir 🇧🇪 489 113 16ms 17 Oct 2023 946th brimstonetrader 488 101 14ms 8 Jan 2024 947th zakariamouhid 484 102 9ms 13 Jun 2023 947th jameswmccarty 484 102 17ms 23 Feb 2025 949th snoozingnewt 🇨🇦 482 122 4ms 13 Oct 2025 950th msbranicky 482 129 38ms 24 Dec 2023 951st 52525rr 480 103 13ms 12 Jun 2025 952nd xPMo 479 78 359ms 28 Jun 2024 953rd amollberg 🇸🇪 479 103 20ms 23 Apr 2023 953rd ComputerKWasTaken 🇺🇸 479 103 15ms 23 Jan 2025 953rd Andrey2001 479 103 193ms 20 days ago 956th snoozingnewt 🇨🇦 477 86 2,333ms 13 Oct 2025 957th blaztoma 🇱🇹 476 136 125ms 17 Aug 2025 958th ridingqwerty 🇺🇸 474 104 14ms 1 Feb 2024 958th Pyroan 474 104 23ms 16 Apr 2025 960th inventshah 474 240 134ms 22 Nov 2022 First Prev 881–960 of 1,613 Next Last