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 480th jeff-at-tamer-dot-codes 🇺🇸 742 116 21ms 8 Sep 2023 480th elgan65536 742 116 21ms 31 Mar 2024 480th Flekay 🇩🇪 742 116 27ms 10 Jul 2025 484th janbehrens 🇩🇪 742 128 75ms 21 Jan 2021 485th DialFrost 🇸🇬 742 133 24ms 16 Apr 2025 486th albanian-laundromat 742 193 10ms 14 Jul 2025 487th MeWhenI 🇻🇦 741 82 127ms 7 Dec 2022 488th jwhear 🇺🇸 741 296 1,805ms 30 Sep 2024 489th flawr 740 197 364ms 1 Mar 2019 490th btnlq 738 151 23ms 20 Jan 2022 491st rucin93 🇵🇱 738 160 53ms 20 Aug 2025 492nd HumanoidCPU 737 106 389ms 31 Oct 2024 493rd elisherer 🇮🇱 737 118 13ms 8 Apr 2019 493rd tayloia 🇬🇧 737 118 36ms 15 May 2023 493rd ovs-code 🇩🇪 737 118 13ms 18 Nov 2024 496th yzhs 🇩🇪 736 117 28ms 25 Oct 2020 496th annaproxy 736 117 29ms 31 Oct 2021 496th jakobkordez 🇸🇮 736 117 21ms 17 Oct 2022 496th DialFrost 🇸🇬 736 117 21ms 22 Dec 2022 496th neel11235813 736 117 33ms 18 Jan 2023 496th jatloe 736 117 19ms 5 Oct 2024 502nd emplv 🇱🇻 736 134 33ms 3 Jun 2024 503rd yzhs 🇩🇪 736 198 321ms 24 Jul 2021 503rd Natanaelel 🇸🇪 736 198 318ms 2 May 2025 505th stefangimmillaro 735 169 109ms 29 Nov 2022 506th stefangimmillaro 734 197 548ms 6 Oct 2025 507th olivermrose 🇺🇸 732 83 73ms 19 Sep 2021 507th anter69 🇭🇺 732 83 51ms 12 Feb 2024 509th blaztoma 🇱🇹 731 119 13ms 4 Oct 2025 510th SirBogman 🇺🇸 730 63 7ms 3 Jan 2022 510th Steffan153 🇫🇮 730 63 19ms 2 Mar 2023 512th emgordon154 730 103 142ms 6 Sep 2024 513th MeWhenI 🇻🇦 729 91 94ms 7 Jul 2024 513th Steffan153 🇫🇮 729 91 87ms 9 Jul 2024 515th nsprd 729 118 30ms 19 Jan 2024 515th driri85 729 118 25ms 7 Jan 2025 517th strout 729 200 342ms 16 Aug 2022 518th primo-ppcg 🇹🇭 725 136 13ms 3 Jul 2023 519th adriweb 🇫🇷 724 160 35ms 21 Aug 2023 520th prplz 🇦🇺 723 84 89ms 17 Mar 2020 521st albanian-laundromat 723 119 21ms 24 Apr 2025 522nd anter69 🇭🇺 723 125 1,168ms 13 Mar 2025 523rd lynn 721 92 96ms 13 Mar 2023 523rd sisyphus-ppcg 🇦🇺 721 92 88ms 14 Mar 2023 523rd Yewzir 🇧🇪 721 92 79ms 6 Mar 2024 526th Shanethegamer 🇺🇸 720 161 8ms 16 Apr 2022 526th dokutan 720 161 18ms 10 Apr 2025 528th zygoloid 720 187 86ms 11 Aug 2024 529th namelessiw 720 201 548ms 8 Oct 2025 530th Indivicivet 719 67 21ms 30 Mar 2021 530th KatieLG 🇬🇧 719 67 21ms 24 May 2021 532nd boxjelly 718 203 348ms 23 Feb 2021 532nd HallMatthew314 718 203 371ms 14 Feb 2022 534th Babafaba 717 109 435ms 24 days ago 535th FortuiteMan 🇫🇷 717 120 21ms 23 Apr 2023 535th tri1212 🇻🇳 717 120 547ms 30 Jun 2024 537th elgan65536 717 229 269ms 28 Mar 2024 538th DialFrost 🇸🇬 717 367 722ms 17 Apr 2025 539th h3ra993huskp 🇯🇵 716 202 576ms 18 days ago 540th Yewzir 🇧🇪 716 215 293ms 5 Jan 2024 541st MarcMush 🇫🇷 714 108 1,021ms 3 Jan 2024 542nd annaproxy 713 93 81ms 16 Mar 2023 543rd Shanethegamer 🇺🇸 713 122 16ms 1 Dec 2022 544th sean-niemann 🇺🇸 712 167 447ms 10 Jan 2024 545th fkantelberg 711 121 18ms 14 Jul 2023 546th nwellnhof 🇩🇪 709 110 706ms 23 Jul 2023 547th primo-ppcg 🇹🇭 709 204 643ms 2 Sep 2020 548th MeWhenI 🇻🇦 709 215 56ms 29 Apr 2025 549th JunkIce 705 122 20ms 3 Dec 2024 550th DialFrost 🇸🇬 705 134 288ms 15 Aug 2024 551st aditsu 705 162 4,462ms 9 Sep 2025 552nd janbehrens 🇩🇪 704 140 15ms 12 Nov 2023 553rd billings7 🇬🇧 703 169 389ms 21 Nov 2021 554th angel-p57 🇯🇵 703 238 13ms 18 May 2022 555th justecorruptio 702 124 15ms 14 Apr 2018 556th AlephSquirrel 701 58 124ms 31 May 2023 557th Steffan153 🇫🇮 701 110 978ms 30 May 2024 558th P-Quentin 🇫🇷 700 123 28ms 5 Aug 2022 558th RaBa21 🇭🇺 700 123 22ms 17 Jul 2025 560th Betuaredead 698 69 15ms 12 Jan 2023 First Prev 481–560 of 1,858 Next Last
