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 561st KatieLG 🇬🇧 698 87 51ms 2 Oct 2025 562nd frankgraziano 698 356 222ms 7 Nov 2025 563rd saito-ta 🇯🇵 697 66 7ms 19 Jul 2025 564th ovs-code 🇩🇪 697 112 645ms 9 Feb 2025 565th tobeannouncd 697 209 332ms 30 Jan 2024 566th Shanethegamer 🇺🇸 697 233 30ms 28 Jan 2024 567th ngn 🇧🇬 696 56 5ms 6 Feb 2022 567th bstrat 696 56 4ms 14 Oct 2025 569th rucin93 🇵🇱 696 108 175ms 31 Oct 2024 570th DialFrost 🇸🇬 696 112 2,752ms 17 Apr 2025 571st p01 696 125 21ms 26 Jan 2018 571st tpiechaczek 🇵🇱 696 125 19ms 29 Jan 2020 571st olivermrose 🇺🇸 696 125 21ms 27 Aug 2021 571st dmrichwa 🇺🇸 696 125 18ms 16 Apr 2022 571st two-bad 🇬🇧 696 125 22ms 23 Nov 2023 571st dylanarmstrong 696 125 18ms 10 Dec 2023 571st kkoenig 696 125 19ms 23 Dec 2023 571st helbling 🇨🇭 696 125 18ms 21 Mar 2024 571st duckyluuk 🇳🇱 696 125 19ms 3 Oct 2024 571st acollett89 696 125 17ms 4 Aug 2025 571st iczelia 🇩🇪 696 125 17ms 10 Oct 2025 582nd Yewzir 🇧🇪 695 171 416ms 19 Jun 2024 582nd Yax42 🇫🇷 695 171 420ms 15 Aug 2025 584th retrohun 694 137 1,373ms 29 Oct 2019 585th HumanoidCPU 693 218 118ms 10 Jun 2024 586th stefangimmillaro 693 222 303ms 24 Oct 2023 587th jmerle 🇳🇱 691 96 86ms 5 Jul 2023 587th f-tucker 691 96 110ms 19 Dec 2023 589th ovs-code 🇩🇪 690 88 61ms 22 Feb 2025 590th vang1ong7ang 690 126 19ms 29 Oct 2021 591st GrayJoKing 🇦🇺 690 167 144ms 26 Jan 2023 592nd lynn 688 200 1,452ms 24 Oct 2021 593rd kurkale6ka 687 67 8ms 6 Sep 2021 594th MeWhenI 🇻🇦 687 224 328ms 1 Feb 2024 595th DialFrost 🇸🇬 686 155 135ms 24 May 2025 596th dokutan 685 114 418ms 8 Sep 2025 597th efgen 685 127 14ms 26 Dec 2023 598th Alex-x90 🇺🇸 685 149 10ms 15 May 2023 599th fgrosshans 🇫🇷 684 97 82ms 5 May 2023 600th makononov 684 240 255ms 28 Feb 2025 601st olleicua 🇺🇸 683 89 51ms 21 Feb 2025 602nd ovs-code 🇩🇪 683 126 38ms 9 Feb 2025 603rd timvermeulen 683 221 106ms 19 Jan 2020 604th stefangimmillaro 680 168 4,451ms 10 Nov 2024 604th MeWhenI 🇻🇦 680 168 3,012ms 2 Dec 2024 606th DaCuteRaccoon 679 71 14ms 3 Dec 2022 607th albanian-laundromat 679 115 408ms 9 Aug 2025 608th kyleclaassen 678 127 25ms 22 May 2023 608th emgordon154 678 127 36ms 1 Aug 2024 610th kimbo 🇺🇸 678 227 313ms 17 Dec 2022 611th GrayJoKing 🇦🇺 677 68 8ms 15 Apr 2021 612th southpolenator 677 199 107ms 10 Jun 2023 613th janbehrens 🇩🇪 675 176 377ms 17 Apr 2025 614th targrik 674 129 45ms 4 Sep 2025 615th Shanethegamer 🇺🇸 673 116 451ms 16 Jan 2024 616th Ripick 673 184 418ms 12 Jul 2025 617th janbehrens 🇩🇪 673 215 687ms 7 Jan 2022 618th SirBogman 🇺🇸 672 58 8ms 22 Mar 2022 619th MeWhenI 🇻🇦 672 116 759ms 1 Feb 2024 620th greentruff 672 128 20ms 10 days ago 621st MeWhenI 🇻🇦 672 141 13ms 1 Feb 2024 622nd Shanethegamer 🇺🇸 672 177 419ms 28 Jan 2024 623rd Shanethegamer 🇺🇸 671 115 812ms 8 Jan 2022 624th duckyluuk 🇳🇱 671 181 61ms 16 Dec 2024 625th JDiLenarda 🇫🇷 671 205 1,431ms 22 Nov 2023 626th Shanethegamer 🇺🇸 669 159 143ms 24 May 2025 627th Shanethegamer 🇺🇸 669 185 642ms 28 Jan 2024 628th Shanethegamer 🇺🇸 669 214 115ms 28 Jan 2024 629th AlephSquirrel 667 129 18ms 15 Aug 2022 629th 5cw 🇺🇸 667 129 24ms 8 May 2025 631st stackotter 665 227 106ms 29 May 2023 632nd Jonatan6 🇩🇰 663 203 101ms 3 Aug 2023 633rd SirBogman 🇺🇸 663 375 623ms 23 Nov 2022 634th primo-ppcg 🇹🇭 662 130 21ms 6 Oct 2021 635th Shanethegamer 🇺🇸 661 233 316ms 28 Jan 2024 635th targrik 661 233 290ms 3 Jul 2025 637th Yewzir 🇧🇪 660 161 174ms 13 Sep 2023 638th darkoboshkovski 659 155 9ms 12 Jun 2023 639th MeWhenI 🇻🇦 659 176 8ms 16 Jun 2023 640th MeWhenI 🇻🇦 659 249 168ms 1 Feb 2024 First Prev 561–640 of 1,858 Next Last