The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Kaprekar Numbers 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 881st HumanoidCPU 62 1,259 48ms 13 Aug 2025 882nd ovs-code 🇩🇪 0 35 4,566ms 19 May 2025 883rd ovs-code 🇩🇪 0 47 4,438ms 30 May 2025 884th ovs-code 🇩🇪 0 50 2,400ms 25 Jul 2025 885th sean-niemann 🇺🇸 0 65 3,398ms 29 Apr 2025 886th DialFrost 🇸🇬 0 82 789ms 29 Jul 2025 887th DialFrost 🇸🇬 0 98 4,487ms 9 Feb 2025 888th Shanethegamer 🇺🇸 0 217 153ms 24 May 2025 889th Shanethegamer 🇺🇸 0 439 54ms 22 May 2025 890th Shanethegamer 🇺🇸 0 440 396ms 17 Apr 2025 890th HumanoidCPU 0 440 393ms 18 Aug 2025 890th HumanoidCPU 0 440 49ms 18 Aug 2025 890th HumanoidCPU 0 440 138ms 18 Aug 2025 894th Shanethegamer 🇺🇸 0 441 94ms 17 Apr 2025 894th KatieLG 🇬🇧 0 441 95ms 20 Apr 2025 894th Shanethegamer 🇺🇸 0 441 1ms 5 Aug 2025 894th HumanoidCPU 0 441 1ms 18 Aug 2025 894th HumanoidCPU 0 441 94ms 18 Aug 2025 899th Shanethegamer 🇺🇸 0 442 441ms 17 Apr 2025 899th KatieLG 🇬🇧 0 442 136ms 20 Apr 2025 899th KatieLG 🇬🇧 0 442 307ms 23 Apr 2025 899th Shanethegamer 🇺🇸 0 442 15ms 30 May 2025 899th HumanoidCPU 0 442 430ms 18 Aug 2025 904th Shanethegamer 🇺🇸 0 445 2ms 17 Apr 2025 904th HumanoidCPU 0 445 3ms 18 Aug 2025 906th Shanethegamer 🇺🇸 0 446 2ms 2 May 2025 906th Shanethegamer 🇺🇸 0 446 6ms 2 May 2025 908th Shanethegamer 🇺🇸 0 448 8ms 17 Apr 2025 908th HumanoidCPU 0 448 8ms 18 Aug 2025 908th Shanethegamer 🇺🇸 0 448 2ms 18 Sep 2025 908th HumanoidCPU 0 448 2ms 6 Oct 2025 908th kurkale6ka 0 448 8ms 7 days ago 913th Shanethegamer 🇺🇸 0 449 157ms 16 Apr 2025 913th Shanethegamer 🇺🇸 0 449 18ms 17 Apr 2025 913th Shanethegamer 🇺🇸 0 449 83ms 17 Apr 2025 913th Shanethegamer 🇺🇸 0 449 2ms 1 May 2025 913th Shanethegamer 🇺🇸 0 449 136ms 2 Jul 2025 913th HumanoidCPU 0 449 132ms 18 Aug 2025 913th HumanoidCPU 0 449 17ms 18 Aug 2025 913th HumanoidCPU 0 449 82ms 18 Aug 2025 913th HumanoidCPU 0 449 2ms 18 Aug 2025 913th HumanoidCPU 0 449 160ms 18 Aug 2025 923rd KatieLG 🇬🇧 0 450 1ms 26 days ago 924th Shanethegamer 🇺🇸 0 452 1,102ms 16 Apr 2025 924th Shanethegamer 🇺🇸 0 452 1ms 17 Apr 2025 924th HumanoidCPU 0 452 1ms 18 Aug 2025 924th HumanoidCPU 0 452 1,041ms 18 Aug 2025 928th Shanethegamer 🇺🇸 0 454 7ms 17 Apr 2025 928th HumanoidCPU 0 454 7ms 18 Aug 2025 930th Shanethegamer 🇺🇸 0 457 61ms 16 Apr 2025 930th HumanoidCPU 0 457 57ms 18 Aug 2025 932nd Shanethegamer 🇺🇸 0 466 65ms 3 Jul 2025 933rd HumanoidCPU 0 468 88ms 18 Aug 2025 934th Shanethegamer 🇺🇸 0 487 370ms 17 Apr 2025 934th HumanoidCPU 0 487 340ms 18 Aug 2025 936th Shanethegamer 🇺🇸 0 493 301ms 11 May 2025 936th HumanoidCPU 0 493 292ms 11 days ago 938th KatieLG 🇬🇧 0 508 50ms 20 Apr 2025 939th KatieLG 🇬🇧 0 509 439ms 20 Apr 2025 940th KatieLG 🇬🇧 0 510 2ms 9 Feb 2025 940th HumanoidCPU 0 510 2ms 18 Aug 2025 940th Shanethegamer 🇺🇸 0 510 2ms 23 Sep 2025 943rd KatieLG 🇬🇧 0 513 2ms 20 Apr 2025 943rd HumanoidCPU 0 513 2ms 18 Aug 2025 945th KatieLG 🇬🇧 0 515 3ms 20 Apr 2025 945th KatieLG 🇬🇧 0 515 1,091ms 20 Apr 2025 945th KatieLG 🇬🇧 0 515 2ms 26 days ago 948th KatieLG 🇬🇧 0 516 12ms 20 Apr 2025 948th KatieLG 🇬🇧 0 516 82ms 20 Apr 2025 948th KatieLG 🇬🇧 0 516 7ms 20 Apr 2025 951st KatieLG 🇬🇧 0 517 158ms 23 Apr 2025 952nd KatieLG 🇬🇧 0 519 2ms 20 Apr 2025 953rd KatieLG 🇬🇧 0 520 57ms 23 Apr 2025 954th KatieLG 🇬🇧 0 521 8ms 20 Apr 2025 955th Shanethegamer 🇺🇸 0 527 3ms 28 Jul 2025 955th HumanoidCPU 0 527 3ms 18 Aug 2025 957th KatieLG 🇬🇧 0 529 132ms 24 Oct 2025 958th Shanethegamer 🇺🇸 0 535 4ms 20 Apr 2025 958th HumanoidCPU 0 535 4ms 18 Aug 2025 960th KatieLG 🇬🇧 0 549 4ms 26 days ago First Prev 881–960 of 979 Next Last
