The Calendar hole will go live in approximately 6 days. Why not try and solve it ahead of time?
Recamán in C 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 1st rhdqor213 1,000 67 2ms 8 Apr 2024 1st JohandeRuiter 🇳🇱 1,000 67 1ms 8 Jul 2024 1st KasperKivimaeki 🇫🇮 1,000 67 2ms 13 Aug 2025 4th JayXon 🇺🇸 944 71 1ms 6 Jun 2021 4th nwellnhof 🇩🇪 944 71 1ms 15 Jun 2021 4th sisyphus-ppcg 🇦🇺 944 71 1ms 15 Jun 2021 4th Lydxn 🇨🇦 944 71 2ms 19 Apr 2022 4th m-tkach 🇺🇦 944 71 1ms 15 May 2022 4th Irratix 🇳🇱 944 71 2ms 13 Jun 2022 4th southpolenator 944 71 1ms 16 Jun 2023 4th ognen98 944 71 1ms 16 Jun 2023 4th 09cf 944 71 6ms 17 Oct 2023 4th xiaoyiming123 944 71 1ms 23 Jul 2025 14th primo-ppcg 🇹🇭 931 72 2ms 5 Jun 2021 14th NewDefectus 🇮🇱 931 72 1ms 5 Jun 2021 14th inventshah 931 72 2ms 12 Jun 2022 14th KenanHanke 931 72 1ms 25 Feb 2023 14th ovs-code 🇩🇪 931 72 1ms 18 Feb 2024 14th sean-niemann 🇺🇸 931 72 2ms 22 Jul 2024 14th DialFrost 🇸🇬 931 72 2ms 19 Dec 2024 14th Bpc-CPU 931 72 2ms 23 Jul 2025 22nd tsunderu 🇯🇵 918 73 2ms 14 Sep 2021 22nd LorenzoDeGaspari 918 73 2ms 20 Jun 2022 22nd MeWhenI 🇻🇦 918 73 1ms 8 Dec 2022 22nd Steffan153 🇫🇮 918 73 1ms 25 Mar 2023 22nd qwertyuiop3 🇷🇺 918 73 2ms 2 Jun 2025 22nd AdrienHache 🇫🇷 918 73 2ms 8 mins ago 28th jared-hughes 905 74 1ms 16 Mar 2022 28th janbehrens 🇩🇪 905 74 1ms 21 Nov 2022 30th djeedjay 🇳🇱 893 75 2ms 5 Sep 2021 30th SirBogman 🇺🇸 893 75 2ms 14 Dec 2021 30th Bmrl7 893 75 2ms 8 Mar 2024 33rd xkacer 🇨🇿 870 77 1ms 7 Feb 2021 34th namcartoon06 859 78 2ms 30 Jun 2023 34th iczelia 🇩🇪 859 78 1ms 15 Oct 2025 36th Starwort 🇬🇧 848 79 1ms 11 Nov 2022 37th weliveinhell 🇭🇹 838 80 1ms 16 Sep 2023 37th TeodorDyakov 🇧🇬 838 80 2ms 30 Jun 2025 39th thebuilder6 🇺🇸 827 81 2ms 23 Oct 2021 40th Mabeloid 🇳🇴 817 82 1ms 22 Oct 2025 41st neihousaigaai 807 83 1ms 7 Apr 2021 42nd luuumine 🇫🇷 753 89 3ms 23 days ago 43rd Alex-x90 🇺🇸 736 91 2ms 15 Feb 2023 44th madex 🇩🇪 657 102 2ms 23 Mar 2021 45th ryguyNelson 650 103 1ms 15 Oct 2021 46th generot 🇧🇬 620 108 2ms 31 Mar 2021 46th ibexq 620 108 2ms 30 Sep 2022 46th bac0id 620 108 2ms 2 Jul 2024 49th CatsAreFluffy 598 112 2ms 15 Jan 2023 49th emgordon154 598 112 2ms 25 Nov 2024 51st c0d3-4-F00d 🇩🇪 593 113 1ms 26 Aug 2021 51st DrPiranoid 593 113 1ms 7 Oct 2022 53rd Re-Adventures 🇮🇳 588 114 2ms 25 Jun 2021 53rd snoozingnewt 🇨🇦 588 114 2ms 9 Oct 2025 55th Herbert00709 🇵🇱 583 115 2ms 7 Jun 2024 56th Yewzir 🇧🇪 578 116 2ms 9 Feb 2024 57th pandapawskat 568 118 2ms 2 Sep 2021 58th AIn0n 549 122 2ms 19 Aug 2021 59th dokutan 519 129 2ms 16 Jul 2025 60th isaiah0311 515 130 2ms 16 Feb 2023 61st calinous 🇷🇴 489 137 2ms 27 Feb 2023 62nd msbranicky 475 141 2ms 10 Jan 2024 63rd elttil 381 176 2ms 18 Jun 2024 64th tegenton 73 913 1ms 14 Oct 2021 64th retrohun 73 913 2ms 26 Dec 2022 64th Haksell 🇦🇶 73 913 1ms 28 Feb 2023 64th Shanethegamer 🇺🇸 73 913 2ms 13 Sep 2023 64th HumanoidCPU 73 913 1ms 16 Nov 2023 64th CaedenHarper 🇨🇦 73 913 2ms 23 Jan 2025 64th Maashau 73 913 2ms 12 days ago 71st KatieLG 🇬🇧 73 915 2ms 27 Dec 2020 72nd KatieLG-Transpiler 🇬🇧 57 1,166 1ms 23 Jun 2022 1–72 of 72
