The Calendar hole will go live in approximately 13 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 561st Phil-RGOMEGA 667 121 1ms 31 May 2023 562nd Shanethegamer 🇺🇸 667 138 100ms 29 Apr 2022 563rd cake287 666 117 123ms 15 Jan 2023 564th bzijlema 🇳🇱 666 160 271ms 30 Jan 2024 565th MeWhenI 🇻🇦 665 110 40ms 29 Apr 2025 566th Shanethegamer 🇺🇸 663 125 10ms 14 Jun 2024 567th Feniske 🇫🇷 662 72 229ms 10 Nov 2023 568th emgordon154 662 88 122ms 6 Sep 2024 569th primo-ppcg 🇹🇭 662 117 111ms 1 May 2023 570th MeWhenI 🇻🇦 662 119 97ms 15 Oct 2022 571st aposteriorist 🇨🇦 662 136 463ms 4 Mar 2022 572nd Bonjour27891 🇻🇳 661 83 10ms 15 Jul 2022 572nd SB-945 661 83 10ms 17 Apr 2024 572nd solisolu 661 83 10ms 6 Nov 2025 575th Grrisly 661 116 1ms 7 Nov 2023 576th kops-cg 661 118 133ms 14 Apr 2021 577th stefangimmillaro 660 109 8ms 17 Oct 2023 577th KrausRaus 🇺🇸 660 109 9ms 13 Dec 2023 577th olleicua 🇺🇸 660 109 9ms 5 Feb 2024 577th junkondo-jp 660 109 9ms 30 Jun 2024 577th targrik 660 109 10ms 8 Jun 2025 577th JOrE20 🇺🇸 660 109 11ms 14 days ago 583rd MateuszPietrzak 🇵🇱 660 138 2,790ms 17 Nov 2023 584th Babafaba 659 79 419ms 12 Nov 2025 585th clockworknazo 656 87 2ms 15 Nov 2022 585th dokutan 656 87 384ms 30 Apr 2024 587th bendapootie 656 117 2ms 10 Jul 2020 588th Natanaelel 🇸🇪 654 49 3ms 20 Jul 2023 588th lifthrasiir 🇰🇷 654 49 2ms 28 Nov 2024 588th emgordon154 654 49 2ms 18 Nov 2025 591st juan-cazalvilla 654 84 10ms 1 Aug 2022 591st kops-cg 654 84 15ms 26 Feb 2025 593rd TomvdPeet 654 96 5ms 14 days ago 594th alexkunin 654 110 9ms 6 Jul 2019 594th Yax42 🇫🇷 654 110 9ms 6 Sep 2025 596th lukechampine 653 163 266ms 19 Apr 2020 596th MeWhenI 🇻🇦 653 163 279ms 10 Feb 2023 598th ovs-code 🇩🇪 652 108 70ms 12 Sep 2024 599th minetoblend 652 133 4,446ms 9 Oct 2025 600th DaCoolOne 651 124 1ms 21 Nov 2019 600th frosster 651 124 2ms 2 Nov 2025 602nd stefangimmillaro 651 131 388ms 15 Jun 2025 603rd primo-ppcg 🇹🇭 651 151 486ms 25 Sep 2020 604th ovs-code 🇩🇪 650 40 38ms 25 Feb 2025 605th GrayJoKing 🇦🇺 650 70 36ms 28 May 2021 606th SirBogman 🇺🇸 650 80 394ms 15 Jan 2024 606th Shanethegamer 🇺🇸 650 80 361ms 16 Jan 2024 608th stefangimmillaro 650 143 147ms 29 Oct 2023 609th alexsave 648 111 9ms 13 Nov 2025 610th emgordon154 647 237 1,712ms 17 Sep 2025 611th marcin7Cd 646 85 17ms 1 Jan 2021 611th aposteriorist 🇨🇦 646 85 10ms 28 Jan 2022 611th keelimeguy 🇺🇸 646 85 9ms 7 May 2025 614th Shanethegamer 🇺🇸 645 125 1ms 24 Jan 2024 615th boxjelly 644 121 120ms 5 Jan 2021 616th Steffan153 🇫🇮 643 153 431ms 16 Feb 2023 617th Yewzir 🇧🇪 642 112 9ms 20 Apr 2023 617th Mabeloid 🇳🇴 642 112 9ms 26 Oct 2024 619th postie77 642 133 376ms 5 May 2023 620th Natanaelel 🇸🇪 641 71 43ms 9 Aug 2021 620th olivermrose 🇺🇸 641 71 37ms 25 Sep 2021 622nd angel-p57 🇯🇵 640 196 1ms 23 Nov 2023 623rd h3ra993huskp 🇯🇵 639 154 472ms 18 days ago 624th edre 638 86 16ms 7 Jun 2018 625th adamnielson42 🇺🇸 638 99 6ms 20 Nov 2023 626th stefangimmillaro 638 167 266ms 13 Dec 2024 627th iznax 637 113 8ms 2 Jul 2020 627th Salutations45 637 113 9ms 22 Nov 2024 629th rvdnieuwendijk 🇳🇱 635 75 232ms 14 Jul 2020 630th HumanoidCPU 635 82 415ms 9 May 2025 631st dokutan 635 111 712ms 7 days ago 632nd MobDev-Hobby 634 41 42ms 9 Jan 2024 633rd mossr 🇺🇸 634 90 428ms 24 Feb 2021 634th DialFrost 🇸🇬 634 99 5ms 8 Dec 2023 635th ovs-code 🇩🇪 634 102 2ms 7 Feb 2023 636th BrMorrison 634 123 122ms 6 Nov 2023 637th csharpython 632 72 38ms 28 Aug 2025 638th rifatx 632 135 335ms 6 Jul 2024 639th jeff-at-tamer-dot-codes 🇺🇸 631 87 9ms 6 Jun 2023 640th Shanethegamer 🇺🇸 631 124 36ms 13 Jun 2022 First Prev 561–640 of 2,410 Next Last