Card Number Validation in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc 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 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 Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 451st two-bad 🇬🇧 663 97 10ms 2 Oct 2024 451st LordSir101 663 97 9ms 10 Aug 2025 453rd CaedenHarper 🇨🇦 663 140 336ms 3 Oct 2025 454th rniii 662 106 2ms 2 Oct 2024 454th gastropner 662 106 2ms 11 Feb 2025 456th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 457th snoozingnewt 🇺🇸 661 180 256ms 10 days ago 458th DialFrost 🇸🇬 659 67 2ms 22 Dec 2024 459th MeWhenI 🇻🇦 659 88 130ms 2 Oct 2024 459th Shanethegamer 🇺🇸 659 88 132ms 5 Oct 2024 461st GolfingSuccess 🇬🇷 659 98 23ms 5 Oct 2024 461st firegene 🇮🇪 659 98 17ms 21 Oct 2024 461st JunkIce 659 98 11ms 3 Dec 2024 464th BambooleanLogic 🇸🇪 656 98 9ms 21 Oct 2024 465th error256 656 142 159ms 31 May 2025 466th jwhear 🇺🇸 655 197 1,691ms 1 Oct 2024 467th MeWhenI 🇻🇦 652 88 553ms 2 Oct 2024 468th SirBogman 🇺🇸 652 99 18ms 8 Oct 2024 469th voytxt 🇨🇿 651 89 132ms 17 Apr 2025 469th dokutan 651 89 117ms 28 Jun 2025 471st dokutan 650 99 9ms 28 Jun 2025 472nd w911 650 183 271ms 7 Oct 2024 473rd FlorianCassayre 🇫🇷 646 100 19ms 1 Oct 2024 473rd bzijlema 🇳🇱 646 100 16ms 10 Oct 2024 473rd bricknellj 646 100 17ms 4 Mar 2025 476th rucin93 🇵🇱 646 144 152ms 28 Oct 2024 477th MeWhenI 🇻🇦 645 91 756ms 29 Aug 2025 478th koipondx86 645 123 2ms 8 Nov 2024 479th CaedenHarper 🇨🇦 643 100 10ms 22 Aug 2025 479th iczelia 🇩🇪 643 100 9ms 11 Oct 2025 481st Shanethegamer 🇺🇸 643 124 7ms 4 Oct 2024 482nd CaedenHarper 🇨🇦 643 185 249ms 3 Jan 2025 483rd tomh1012 641 111 395ms 8 Sep 2025 484th Apataras 640 145 302ms 25 Jun 2025 485th stefangimmillaro 639 73 277ms 1 Oct 2024 486th btjones0 639 101 18ms 2 Dec 2024 487th MeWhenI 🇻🇦 638 73 8ms 3 Oct 2024 488th Jonatan6 🇩🇰 638 110 2ms 24 Oct 2024 489th elgan65536 638 146 158ms 2 Oct 2024 490th Yax42 🇫🇷 637 101 9ms 5 Sep 2025 491st annaproxy 633 102 19ms 1 Oct 2024 491st xyangst 633 102 10ms 1 Oct 2024 493rd msbranicky 633 188 250ms 7 Jan 2025 494th Shanethegamer 🇺🇸 631 74 223ms 16 Oct 2024 495th albanian-laundromat 631 264 856ms 10 days ago 496th dokutan 630 91 382ms 19 Oct 2024 497th mossiegoat 627 103 11ms 21 Aug 2025 498th DialFrost 🇸🇬 627 304 152ms 13 Aug 2025 499th AlephSquirrel 625 40 48ms 1 Oct 2024 500th dokutan 624 127 2ms 10 Dec 2024 501st not-a-pokemon 621 113 2ms 23 Jul 2025 502nd codereport 🇨🇦 619 63 34ms 2 Oct 2024 503rd BalaM314 619 104 9ms 4 Feb 2025 503rd acollett89 619 104 12ms 15 Jul 2025 505th MarcMush 🇫🇷 617 91 746ms 8 Oct 2024 506th SirBogman 🇺🇸 617 93 521ms 23 Jul 2025 507th Ripick 617 135 340ms 23 Mar 2025 508th jupj 🇫🇮 616 114 2ms 20 Jul 2025 509th fourth-bit 615 105 17ms 1 Oct 2024 509th jared-hughes 615 105 17ms 3 Oct 2024 509th mattyhempstead 615 105 29ms 7 Oct 2024 512th olleicua 🇺🇸 612 78 36ms 18 Oct 2024 513th evnu 612 147 304ms 12 Oct 2025 514th davecame 609 106 17ms 1 Oct 2024 514th starfihs 609 106 10ms 2 Oct 2024 514th rschwa6308 🇺🇸 609 106 18ms 28 Oct 2024 514th snydej 609 106 18ms 21 Nov 2024 514th andrewjc2000 609 106 16ms 17 Jul 2025 514th travisdoesmath 609 106 17ms 7 Sep 2025 520th Seanharrs 609 117 405ms 15 Nov 2024 521st bac0id 609 141 368ms 10 Jan 2025 522nd daveberlin 607 106 10ms 27 Jun 2025 523rd kaascevich 607 134 122ms 9 Jul 2025 524th MeWhenI 🇻🇦 605 73 2ms 2 Oct 2024 525th alemelis 604 93 485ms 1 Oct 2024 First Prev 451–525 of 813 Next Last