The Calendar hole will go live in approximately 9 days. Why not try and solve it ahead of time?
Diamonds 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 241st sean-niemann 🇺🇸 819 130 252ms 12 Aug 2025 242nd Irratix 🇳🇱 818 88 9ms 1 Sep 2020 243rd albanian-laundromat 817 105 4ms 8 days ago 244th edsrzf 🇳🇿 814 77 740ms 18 days ago 245th GrayJoKing 🇦🇺 813 64 350ms 23 Jul 2024 246th JayXon 🇺🇸 812 56 37ms 28 Dec 2021 246th nwellnhof 🇩🇪 812 56 43ms 28 Dec 2021 248th emgordon154 811 121 102ms 18 days ago 249th bstrautin 808 59 232ms 17 Jun 2020 249th primo-ppcg 🇹🇭 808 59 229ms 18 Jun 2020 251st dmrichwa 🇺🇸 808 89 9ms 7 Nov 2023 252nd prplz 🇦🇺 808 95 2ms 29 Dec 2021 252nd JohandeRuiter 🇳🇱 808 95 2ms 21 Oct 2023 254th primo-ppcg 🇹🇭 808 134 60ms 6 Mar 2022 255th lynn 807 68 390ms 2 Dec 2021 255th anter69 🇭🇺 807 68 10ms 8 Feb 2023 257th primo-ppcg 🇹🇭 807 165 2ms 2 Oct 2020 258th primo-ppcg 🇹🇭 805 106 378ms 21 Nov 2021 259th laikoni 804 97 119ms 27 Dec 2018 260th edsrzf 🇳🇿 804 103 8ms 18 days ago 261st duckyluuk 🇳🇱 801 65 343ms 28 Aug 2024 262nd rucin93 🇵🇱 800 87 2ms 19 Nov 2025 263rd Steffan153 🇫🇮 799 81 2ms 1 Nov 2023 264th 09cf 799 114 527ms 17 Dec 2023 265th pardouin 🇫🇷 798 57 37ms 1 Sep 2025 266th Steffan153 🇫🇮 797 66 4ms 27 Aug 2024 266th ovs-code 🇩🇪 797 66 4ms 5 Oct 2024 268th emgordon154 797 82 971ms 17 Nov 2024 269th lynn 797 93 9ms 16 Nov 2021 270th hallvabo 🇳🇴 796 69 20ms 10 Sep 2020 270th annaproxy 796 69 17ms 12 Dec 2021 270th ovs-code 🇩🇪 796 69 9ms 6 Jan 2022 270th PeterTillema 🇳🇱 796 69 13ms 11 Apr 2023 270th tri1212 🇻🇳 796 69 9ms 25 Oct 2023 270th ndren 796 69 9ms 12 Nov 2023 270th fourth-bit 796 69 9ms 22 Sep 2024 277th bforte 796 98 120ms 24 Dec 2018 278th albanian-laundromat 796 99 3ms 15 Aug 2025 279th nwellnhof 🇩🇪 795 134 261ms 5 Sep 2020 280th dloscutoff 792 72 470ms 27 Nov 2018 280th garrisonhh 792 72 379ms 25 Nov 2020 282nd saito-ta 🇯🇵 788 33 41ms 18 Aug 2022 282nd clockworknazo 788 33 36ms 1 Sep 2022 284th lifthrasiir 🇰🇷 788 66 378ms 2 Dec 2024 285th jared-hughes 788 83 938ms 27 Feb 2024 286th marcin7Cd 788 99 130ms 13 Apr 2020 287th xDavidL 788 118 131ms 19 Feb 2022 288th namelessiw 787 125 407ms 6 Oct 2025 289th AlephSquirrel 786 112 6ms 6 Oct 2024 290th MeWhenI 🇻🇦 786 117 86ms 13 Aug 2024 291st Irratix 🇳🇱 784 70 20ms 7 May 2022 291st ZakkkkAttackkkk 🇵🇭 784 70 10ms 9 Aug 2022 291st DialFrost 🇸🇬 784 70 9ms 19 Dec 2022 291st xsot 🇸🇬 784 70 9ms 17 Sep 2023 291st bizy-coder 784 70 10ms 12 Nov 2023 291st steffan-polygolf 784 70 10ms 8 Mar 2024 291st Rubiksmath 784 70 11ms 25 Jul 2024 291st 5cw 🇺🇸 784 70 9ms 31 Oct 2024 299th KasperKivimaeki 🇫🇮 783 98 2ms 4 Nov 2023 300th nwellnhof 🇩🇪 782 41 32ms 7 Sep 2021 300th Bubbler-4 782 41 3ms 19 Jan 2022 302nd cywong-amino 🇭🇰 782 92 9ms 26 Jun 2020 302nd itsh01 782 92 9ms 14 Dec 2021 302nd snoozingnewt 🇨🇦 782 92 9ms 1 Nov 2023 305th SirBogman 🇺🇸 781 61 223ms 29 Jan 2024 306th Awsute 780 100 123ms 11 Nov 2022 306th tobeannouncd 780 100 123ms 3 Jan 2024 306th Shanethegamer 🇺🇸 780 100 123ms 24 Jan 2024 306th Natanaelel 🇸🇪 780 100 120ms 23 Apr 2025 310th edsrzf 🇳🇿 779 83 3ms 14 Nov 2025 311th kg583 🇺🇸 779 109 7ms 17 Nov 2025 312th Natanaelel 🇸🇪 778 84 835ms 9 Sep 2021 312th SirBogman 🇺🇸 778 84 1,214ms 13 Nov 2022 314th tclune 778 94 39ms 21 Mar 2021 315th Shanethegamer 🇺🇸 778 241 469ms 23 Jan 2025 316th lynn 777 67 751ms 17 Feb 2024 316th ovs-code 🇩🇪 777 67 371ms 1 Jun 2024 318th prplz 🇦🇺 774 93 9ms 18 Mar 2019 318th jared-hughes 774 93 8ms 4 Jan 2023 318th MeWhenI 🇻🇦 774 93 9ms 3 Sep 2023 First Prev 241–320 of 2,410 Next Last