The Calendar hole will go live in approximately 9 days. Why not try and solve it ahead of time?
Morse Encoder 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 800th RJFuller 204 457 11ms 23 Feb 2024 802nd MeWhenI 🇻🇦 203 635 4ms 18 Nov 2023 803rd dokutan 201 560 2ms 7 Apr 2023 804th MeWhenI 🇻🇦 200 737 1ms 8 Feb 2022 805th KatieLG 🇬🇧 200 850 228ms 20 May 2021 806th flaminggoat 199 606 2ms 24 Sep 2020 807th rollershutter 198 472 9ms 19 Jul 2023 808th MiffOttah 198 539 370ms 21 Nov 2021 809th eclyptox 198 571 4ms 10 Oct 2024 810th retrohun 198 758 2ms 9 Nov 2022 811th ndren 197 681 2ms 9 Oct 2023 812th 21zz 196 475 10ms 2 Dec 2022 813th jessegyger 195 579 4ms 22 Oct 2022 814th dokutan 195 736 70ms 12 Mar 2025 815th eli-siegel 195 826 307ms 28 Jun 2023 816th aglahir1 193 483 9ms 21 Jul 2022 817th vonKrafft 192 486 9ms 26 Mar 2020 818th mothcolada 🇺🇸 191 487 10ms 11 Mar 2021 819th Yewzir 🇧🇪 190 454 1,617ms 15 Jan 2024 820th moshiba 190 490 12ms 18 Apr 2018 821st mazzegi 190 851 294ms 16 Apr 2020 822nd KatieLG 🇬🇧 189 780 11ms 17 Jan 2025 823rd MeWhenI 🇻🇦 187 911 347ms 28 Mar 2022 824th jtaxen 186 500 10ms 6 May 2024 825th twocatsinatrenchcoat 186 502 10ms 10 May 2022 826th valgardg 🇮🇸 185 504 9ms 10 Aug 2021 827th befoster 184 507 10ms 8 May 2021 828th gigaprofisi 🇺🇸 183 597 9ms 10 Aug 2025 829th JeromeSchweitzer 182 511 16ms 7 Sep 2020 829th Drew-j-Smith 182 511 10ms 29 Mar 2022 831st kkoenig 182 885 343ms 4 Jan 2024 832nd Stockoh 🇫🇷 181 515 10ms 5 Nov 2023 833rd MyXoToD 🇩🇪 181 603 9ms 19 May 2025 834th iczelia 🇩🇪 180 606 9ms 23 Oct 2025 835th bobsbeenjamin 🇺🇸 179 522 9ms 10 Dec 2020 836th dokutan 179 631 86ms 10 Jan 2025 837th dokutan 179 850 378ms 23 Sep 2024 838th jameswmccarty 178 525 10ms 4 Nov 2024 839th MeWhenI 🇻🇦 178 1,053 74ms 28 Mar 2022 840th amishtal 176 530 10ms 5 Dec 2019 841st ArturLange 175 534 10ms 14 Sep 2018 841st DGipe 175 534 16ms 30 Apr 2024 843rd KatieLG 🇬🇧 174 929 283ms 29 May 2021 844th vhoulbreque 🇫🇷 172 541 13ms 6 Apr 2024 845th adoxography 172 542 10ms 21 May 2018 846th KatieLG-Transpiler 🇬🇧 172 939 331ms 25 Sep 2022 847th KatieLG-Transpiler 🇬🇧 172 1,002 646ms 10 Jul 2022 848th louisbosqui 169 551 11ms 30 Dec 2020 849th HumanoidCPU 169 552 11ms 12 Aug 2024 850th kellantech 168 556 10ms 1 Jun 2023 851st hacker19374 167 652 9ms 9 Mar 2023 852nd kurkale6ka 165 416 3ms 6 Aug 2021 853rd HumanoidCPU 164 663 9ms 5 Feb 2025 854th KatieLG 🇬🇧 164 899 2ms 2 May 2021 855th dokutan 163 919 129ms 19 days ago 856th dokutan 162 796 5ms 24 Dec 2024 857th KatieLG 🇬🇧 162 939 360ms 16 Jan 2023 858th dokutan 162 999 358ms 4 Feb 2025 859th BrenSchaap 161 580 10ms 21 Oct 2021 860th hacker112 🇸🇪 160 682 9ms 24 Jun 2024 861st HumanoidCPU 158 548 373ms 12 Aug 2024 862nd KatieLG 🇬🇧 157 674 2ms 9 Dec 2020 863rd Maximizer02 157 695 9ms 18 Mar 2024 864th dokutan 157 916 54ms 1 Jul 2025 865th shamrice 🇺🇸 157 1,945 12ms 30 Jan 2021 866th celiendonze 🇨🇭 156 596 10ms 10 Oct 2023 867th Pale-Vessel 156 597 11ms 10 Jan 2024 868th stephanie-flower 156 699 9ms 5 Nov 2025 869th syspro86 156 887 580ms 31 Jul 2024 870th cingulataluke 154 604 10ms 29 Aug 2023 871st alex742 154 707 10ms 16 Jul 2024 872nd dokutan 154 1,108 294ms 10 Dec 2024 873rd roguh 🇬🇹 153 611 10ms 23 Jan 2024 874th SirFireball3521 151 484 297ms 17 Feb 2023 875th harperse 151 635 298ms 5 May 2023 876th RedzGoose 🇦🇺 151 818 106ms 3 Oct 2024 877th scpchicken 🇵🇼 150 623 10ms 10 Apr 2021 878th KatieLG 🇬🇧 150 755 5ms 16 Jan 2023 879th KatieLG-Transpiler 🇬🇧 150 1,011 344ms 8 Nov 2022 880th CaedenHarper 🇨🇦 149 655 777ms 11 Sep 2025 First Prev 801–880 of 979 Next Last