The Calendar hole will go live in approximately 3 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 880th mdnestor 538 102 9ms 27 Dec 2022 880th FranklinJiaChen 538 102 9ms 19 Jul 2024 880th BoBz200 538 102 10ms 9 Nov 2024 880th FortuiteMan 🇫🇷 538 102 9ms 25 days ago 885th KatieLG 🇬🇧 538 171 104ms 15 Jan 2023 886th eranws 537 134 8ms 16 Oct 2022 886th bremersj 537 134 8ms 24 Oct 2025 888th arctouch-cristiannevianna 537 159 382ms 4 Mar 2024 889th MichalMarsalek 🇨🇿 536 97 388ms 21 Jan 2024 890th mousetail 🇳🇱 536 118 5ms 22 Oct 2024 891st n8pjl 536 143 2ms 29 Oct 2023 892nd dokutan 536 168 427ms 28 hours ago 893rd MeWhenI 🇻🇦 536 170 419ms 14 Nov 2022 894th KevinMarquette 🇺🇸 535 89 224ms 5 Jun 2020 894th TimCurwick 🇺🇸 535 89 253ms 27 Jan 2021 894th JPRuskin 🇬🇧 535 89 201ms 1 May 2024 897th bizy-coder 534 235 2ms 20 Jan 2024 898th P-Quentin 🇫🇷 533 103 10ms 11 Aug 2022 898th Alex-x90 🇺🇸 533 103 9ms 25 Oct 2023 898th Bmrl7 533 103 10ms 3 Mar 2024 898th souta-1326 533 103 10ms 26 Mar 2025 898th wobblybits 533 103 9ms 15 Aug 2025 903rd igmcdowell 533 135 8ms 12 Jan 2022 904th ericlangedijk 🇸🇮 533 160 371ms 22 May 2023 905th aalanso 533 171 2,429ms 18 Nov 2023 906th AlephSquirrel 531 49 42ms 28 Jul 2022 907th Natanaelel 🇸🇪 530 69 106ms 29 Apr 2022 908th didroe 529 86 36ms 7 Nov 2024 909th frankgraziano 529 126 4ms 13 Mar 2025 910th Garklein 🇨🇦 529 136 9ms 7 Jan 2022 910th zakariamouhid 529 136 8ms 10 Jan 2023 912th AkashTandon167 529 145 2ms 25 Nov 2019 912th funnyboy-roks 529 145 2ms 14 Jun 2024 914th hoodadam 528 104 10ms 14 Jun 2019 914th stordev 528 104 9ms 26 Feb 2021 914th ahmetdemirag 🇨🇾 528 104 9ms 21 Jun 2024 914th comp0zr 528 104 10ms 10 Oct 2024 918th jared-hughes 526 61 32ms 1 Oct 2021 919th commandblockguy 🇺🇸 526 99 663ms 15 Jan 2024 920th chunes3 🇺🇸 526 134 68ms 19 Sep 2023 921st Yewzir 🇧🇪 526 187 832ms 2 Oct 2025 922nd tomh1012 525 137 9ms 1 Oct 2020 922nd stefangabos 🇷🇴 525 137 9ms 30 Aug 2023 924th djeedjay 🇳🇱 525 146 2ms 9 Oct 2020 925th Aurel300 🇨🇭 525 177 195ms 30 Jun 2024 926th dokutan 524 162 3ms 17 Apr 2024 927th Romain-1 🇫🇷 524 163 378ms 18 May 2022 928th hiddicop 🇸🇪 523 87 42ms 27 Jan 2021 928th Irratix 🇳🇱 523 87 39ms 4 Mar 2022 930th kevinmchung 523 105 9ms 18 Sep 2018 930th petar-donchev 523 105 9ms 8 Sep 2019 930th sambirnbaum1 523 105 9ms 15 Sep 2019 930th feherd 523 105 10ms 29 Aug 2021 930th redbeancola 523 105 9ms 5 Nov 2021 930th mousetail 🇳🇱 523 105 9ms 2 Nov 2022 930th M0PKOBKA 523 105 10ms 21 Dec 2022 930th janbehrens 🇩🇪 523 105 9ms 17 Jun 2023 930th AlexanderFair 523 105 10ms 26 Jun 2023 930th fgrosshans 🇫🇷 523 105 9ms 17 Jul 2024 930th edsrzf 🇳🇿 523 105 9ms 22 Nov 2024 941st janbehrens 🇩🇪 523 120 5ms 2 Dec 2021 942nd msbranicky 523 293 1,694ms 17 Sep 2025 943rd Shanethegamer 🇺🇸 522 204 263ms 13 Sep 2022 944th krcs 🇵🇱 521 138 9ms 19 Apr 2022 945th JGDoerrer 521 175 407ms 22 Jan 2022 946th MeWhenI 🇻🇦 520 165 3ms 14 Jul 2023 947th decorator-factory 518 106 12ms 24 May 2019 947th mosho-p 518 106 10ms 11 Oct 2022 947th Europe2048 518 106 9ms 21 Nov 2024 947th dirckvdende 518 106 10ms 9 Jul 2025 947th qpwoeirut 518 106 10ms 19 Nov 2025 952nd Kibble 518 139 8ms 12 Jul 2020 952nd ArmaanAS 518 139 9ms 22 Feb 2022 954th guliyevemil1 🇦🇿 518 148 1ms 3 Feb 2021 955th roupiq 🇵🇱 518 176 422ms 21 Feb 2024 956th Shanethegamer 🇺🇸 517 125 73ms 16 Feb 2025 957th jupj 🇫🇮 517 206 261ms 19 Aug 2022 958th guliyevemil1 🇦🇿 516 151 119ms 30 Jan 2021 959th lacroixjonathan87 515 122 5ms 11 Aug 2020 959th blaztoma 🇱🇹 515 122 5ms 19 Sep 2025 First Prev 881–960 of 2,411 Next Last