The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Arabic to Roman 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 879th RealAMC 🇳🇿 543 188 11ms 21 Nov 2023 879th Maashau 543 188 11ms 23 days ago 883rd PiterAnnema 541 159 27ms 30 Aug 2020 883rd StefanHabel 🇨🇦 541 159 23ms 11 Nov 2022 883rd stacksparrow4 541 159 21ms 29 Aug 2023 883rd Lv0Sys 🇵🇱 541 159 27ms 20 days ago 887th DialFrost 🇸🇬 540 189 10ms 11 Dec 2023 887th nsprd 540 189 11ms 19 Jan 2024 889th HumanoidCPU 540 197 149ms 11 Jun 2024 889th dokutan 540 197 156ms 15 Aug 2025 891st emgordon154 540 285 292ms 17 Jan 2025 892nd inventshah 539 145 556ms 22 Jan 2024 893rd Lv0Sys 🇵🇱 538 286 296ms 20 days ago 894th ian-h-chamberlain 🇺🇸 538 305 183ms 4 Feb 2020 895th MeWhenI 🇻🇦 537 140 143ms 3 Aug 2024 896th ian-odonnell 537 162 14ms 12 Mar 2018 896th alexkunin 537 162 15ms 7 Jul 2019 896th gigaprofisi 🇺🇸 537 162 15ms 7 Aug 2025 899th AGoyet 535 161 20ms 26 Jul 2022 899th NDR0216 🇹🇼 535 161 20ms 4 Jul 2024 899th zhaohm14 535 161 21ms 6 Jun 2025 902nd Florian-Mt 534 163 14ms 14 Nov 2023 903rd Shanethegamer 🇺🇸 533 185 14ms 28 Jan 2024 904th mbuchel 532 233 368ms 28 Aug 2021 905th LouisRustenholz 531 162 48ms 23 Dec 2021 905th tobyLovick 531 162 21ms 7 Dec 2023 907th TheEric0802 🇩🇪 531 172 17ms 22 Sep 2023 908th KarstenHohmeier 530 186 14ms 8 Mar 2018 909th mpldr 🇩🇪 529 291 295ms 24 Mar 2025 910th commandblockguy 🇺🇸 528 148 515ms 1 Sep 2025 911th M4rc0g1 528 163 20ms 26 days ago 912th KatieLG 🇬🇧 528 326 197ms 19 May 2024 913th Bubbler-4 527 74 4ms 19 Jan 2022 914th jcheritat 527 165 18ms 6 Sep 2020 914th trinityy-7 527 165 15ms 19 Oct 2023 914th alexsave 527 165 23ms 11 Sep 2024 917th iczelia 🇩🇪 527 180 96ms 10 Oct 2025 918th roavin 526 194 11ms 13 May 2022 919th HumanoidCPU 526 272 11ms 19 Aug 2024 920th mbittner20 525 164 20ms 27 May 2023 920th iliaspapa 525 164 24ms 7 days ago 922nd blaztoma 🇱🇹 524 116 82ms 13 Oct 2025 923rd NatNgs 524 166 15ms 9 Jan 2020 923rd tomh1012 524 166 15ms 25 Aug 2020 923rd aksyristos 524 166 21ms 29 Oct 2022 926th albanian-laundromat 524 181 14ms 13 Jul 2025 927th bac0id 524 195 10ms 3 Jul 2024 928th viv511 524 257 571ms 3 Feb 2025 929th ashscodes 524 294 330ms 19 Nov 2023 930th MeWhenI 🇻🇦 523 204 12ms 6 Aug 2023 931st YoungjuneKwon 522 165 23ms 19 Dec 2018 931st neihousaigaai 522 165 20ms 6 Oct 2024 931st Deedogg 522 165 28ms 30 Oct 2025 934th Irratix 🇳🇱 522 279 382ms 18 Nov 2021 935th hpr 521 167 19ms 13 Jun 2021 936th bwat2 520 278 705ms 21 Apr 2022 937th Pimentero 🇷🇺 519 190 16ms 14 Apr 2024 938th c0d3-4-F00d 🇩🇪 518 197 11ms 19 Apr 2022 939th AlexDaniel 🇪🇪 517 104 1,482ms 13 Mar 2018 940th MeWhenI 🇻🇦 517 151 551ms 24 May 2024 941st msbranicky 517 277 12ms 12 Aug 2023 942nd baumpilz 517 280 650ms 20 Jan 2021 943rd israem 516 151 854ms 19 May 2024 944th edsrzf 🇳🇿 516 180 468ms 22 Jul 2025 945th emgordon154 516 183 270ms 16 Sep 2025 946th jared-hughes 515 118 42ms 12 Sep 2022 947th ludwig-n 515 167 22ms 6 Apr 2021 947th Starwort 🇬🇧 515 167 22ms 4 Dec 2022 949th xkacer 🇨🇿 515 169 18ms 24 Jan 2021 949th c0d3-4-F00d 🇩🇪 515 169 43ms 23 Jan 2022 949th FrederikHutfless 🇩🇪 515 169 15ms 26 Dec 2022 952nd bbakersmith 515 185 384ms 29 Jul 2021 953rd janAkali 🇷🇺 514 241 362ms 20 May 2024 954th adaGrad1 513 199 10ms 4 Sep 2023 955th jfallon1997 512 168 28ms 15 Aug 2022 955th mathisfun271 512 168 25ms 16 Dec 2023 957th BambooleanLogic 🇸🇪 512 170 16ms 11 Dec 2021 957th rbrdl 512 170 17ms 30 Dec 2021 957th edsrzf 🇳🇿 512 170 15ms 21 Sep 2024 957th AnAwesomGuy 512 170 44ms 20 Sep 2025 First Prev 881–960 of 1,858 Next Last