The Calendar hole will go live in approximately 7 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 801st epic-programmer-guy 635 102 188ms 3 Jan 2024 802nd edsrzf 🇳🇿 634 98 17ms 6 Jan 2025 803rd Steffan153 🇫🇮 634 125 392ms 14 Aug 2024 804th Lv0Sys 🇵🇱 633 78 13ms 17 days ago 805th snoozingnewt 🇨🇦 628 105 48ms 13 Oct 2025 806th olleicua 🇺🇸 625 79 14ms 19 Jan 2024 807th Techdude01 624 79 14ms 20 Jan 2023 807th rollershutter 624 79 43ms 4 Jul 2023 807th bob-th 624 79 14ms 19 Aug 2023 807th qwjhvbxi 624 79 15ms 6 Feb 2024 811th janbehrens 🇩🇪 624 127 367ms 21 Nov 2022 812th madex 🇩🇪 623 93 2ms 15 Jun 2023 813th blaztoma 🇱🇹 622 151 26ms 3 Sep 2025 814th blaztoma 🇱🇹 620 107 26ms 2 Sep 2025 815th Shanethegamer 🇺🇸 619 120 45ms 12 Sep 2024 816th Vaekor 617 80 15ms 9 Jul 2023 816th fuzzylojik-golf 🇺🇸 617 80 15ms 9 Jun 2025 816th Flekay 🇩🇪 617 80 14ms 10 Jul 2025 816th blaztoma 🇱🇹 617 80 10ms 2 Sep 2025 820th snoozingnewt 🇨🇦 617 105 151ms 13 Oct 2025 821st blaztoma 🇱🇹 616 76 460ms 2 Sep 2025 822nd msbranicky 616 94 2ms 10 Jan 2024 823rd blaztoma 🇱🇹 616 118 168ms 2 Sep 2025 824th MeWhenI 🇻🇦 615 101 2ms 24 Nov 2022 824th msbranicky 615 101 19ms 4 Aug 2023 826th yzhs 🇩🇪 611 106 139ms 25 Jun 2023 827th emgordon154 610 71 25ms 19 Sep 2024 828th fkantelberg 609 81 11ms 23 Jul 2023 828th cingulataluke 609 81 13ms 28 Aug 2023 828th CutSandstone 609 81 13ms 4 Jul 2024 831st emgordon154 609 205 4,290ms 18 Jul 2024 832nd blaztoma 🇱🇹 608 72 809ms 3 Sep 2025 832nd MeWhenI 🇻🇦 608 72 689ms 15 Sep 2025 834th HumanoidCPU 608 77 416ms 26 Jun 2024 835th blaztoma 🇱🇹 608 138 1,274ms 2 Sep 2025 836th retrohun 603 62 304ms 11 Mar 2023 837th Feniske 🇫🇷 603 68 257ms 6 Nov 2023 838th SwordF-Official 603 103 12ms 17 Apr 2025 839th blaztoma 🇱🇹 602 60 36ms 2 Sep 2025 840th TaserTheFox 🇺🇸 602 82 15ms 31 Mar 2023 840th StefanHabel 🇨🇦 602 82 15ms 21 Apr 2024 840th alexsave 602 82 13ms 15 Nov 2025 843rd blaztoma 🇱🇹 602 229 1,685ms 15 Sep 2025 844th Ripick 600 110 367ms 24 Jun 2024 845th Emutis 🇱🇹 600 132 363ms 4 Sep 2025 846th Shanethegamer 🇺🇸 598 54 2ms 19 Nov 2022 846th snoozingnewt 🇨🇦 598 54 3ms 13 Oct 2025 848th Shanethegamer 🇺🇸 597 104 62ms 22 Dec 2023 848th Yewzir 🇧🇪 597 104 25ms 7 Feb 2024 850th IISResetMe 595 69 248ms 30 Jun 2023 851st glesnick 594 83 51ms 23 Nov 2022 852nd MeWhenI 🇻🇦 593 82 296ms 15 Feb 2023 853rd blaztoma 🇱🇹 592 105 2ms 4 Sep 2025 854th Bmrl7 591 98 2ms 12 Feb 2024 855th bac0id 591 134 426ms 27 Sep 2023 856th CarsonChr 🇺🇸 588 84 13ms 7 Apr 2024 857th twocatsinatrenchcoat 587 84 15ms 29 Nov 2022 857th FortuiteMan 🇫🇷 587 84 15ms 21 Jul 2025 859th blaztoma 🇱🇹 587 135 362ms 2 Sep 2025 860th msbranicky 586 162 272ms 21 Aug 2023 861st fuzzylojik-golf 🇺🇸 585 80 399ms 6 Jul 2025 862nd blaztoma 🇱🇹 584 64 8ms 17 Aug 2025 863rd msbranicky 584 113 3,363ms 9 Jan 2025 863rd snoozingnewt 🇨🇦 584 113 3,172ms 13 Oct 2025 865th dokutan 583 75 702ms 29 Aug 2025 866th yoshykai 583 136 403ms 15 Apr 2025 867th snoozingnewt 🇨🇦 582 125 409ms 13 Oct 2025 868th madeforlosers 581 85 342ms 21 Oct 2024 869th blaztoma 🇱🇹 580 95 94ms 4 Sep 2025 870th Yewzir 🇧🇪 579 112 101ms 28 Mar 2024 871st blaztoma 🇱🇹 579 114 39ms 2 Sep 2025 872nd weeble 578 75 27ms 24 Dec 2024 873rd Natanaelel 🇸🇪 577 149 151ms 27 Jul 2025 874th aksyristos 574 63 614ms 9 Feb 2023 875th emgordon154 574 68 141ms 9 Aug 2024 876th AZ9tumas 574 86 14ms 17 Dec 2022 876th Mikey-Beep 🇬🇧 574 86 15ms 2 Jun 2024 876th khaninm 574 86 24ms 4 Jun 2025 876th keelimeguy 🇺🇸 574 86 11ms 14 Jun 2025 876th acollett89 574 86 10ms 4 Aug 2025 First Prev 801–880 of 1,615 Next Last