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 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 United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 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 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 United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 451st MeWhenI 🇻🇦 651 88 2 Oct 2024 452nd voytxt 🇨🇿 651 89 17 Apr 2025 452nd dokutan 651 89 28 Jun 2025 454th SirBogman 🇺🇸 651 99 8 Oct 2024 455th dokutan 649 99 28 Jun 2025 456th bac0id 648 180 9 Jan 2025 457th w911 646 183 7 Oct 2024 458th MeWhenI 🇻🇦 645 91 11 days ago 458th albanian-laundromat 645 91 14 hours ago 460th FlorianCassayre 🇫🇷 645 100 1 Oct 2024 460th bzijlema 🇳🇱 645 100 10 Oct 2024 460th bricknellj 645 100 4 Mar 2025 463rd rucin93 🇵🇱 645 144 28 Oct 2024 464th CaedenHarper 🇨🇦 643 100 19 days ago 465th Shanethegamer 🇺🇸 643 124 4 Oct 2024 466th koipondx86 641 123 8 Nov 2024 467th stefangimmillaro 639 73 1 Oct 2024 468th tomh1012 639 111 2 days ago 469th CaedenHarper 🇨🇦 639 185 3 Jan 2025 470th btjones0 638 101 2 Dec 2024 471st yoshykai 637 183 12 Apr 2025 472nd Yax42 🇫🇷 636 101 5 days ago 473rd Jonatan6 🇩🇰 636 110 24 Oct 2024 474th elgan65536 636 146 2 Oct 2024 475th annaproxy 632 102 1 Oct 2024 475th xyangst 632 102 1 Oct 2024 477th Shanethegamer 🇺🇸 631 74 16 Oct 2024 478th dokutan 630 91 19 Oct 2024 479th msbranicky 628 188 7 Jan 2025 480th mossiegoat 626 103 20 days ago 481st AlephSquirrel 625 40 1 Oct 2024 482nd dokutan 621 127 10 Dec 2024 483rd not-a-pokemon 619 113 23 Jul 2025 484th DialFrost 🇸🇬 619 304 13 Aug 2025 485th BalaM314 618 104 4 Feb 2025 485th acollett89 618 104 15 Jul 2025 487th codereport 🇨🇦 617 63 2 Oct 2024 488th Schmitt-Very-Cool 617 189 3 Feb 2025 489th SirBogman 🇺🇸 616 93 23 Jul 2025 490th MarcMush 🇫🇷 615 91 8 Oct 2024 491st Ripick 615 135 23 Mar 2025 492nd fourth-bit 614 105 1 Oct 2024 492nd jared-hughes 614 105 3 Oct 2024 492nd mattyhempstead 614 105 7 Oct 2024 495th jupj 🇫🇮 614 114 20 Jul 2025 496th olleicua 🇺🇸 612 78 18 Oct 2024 497th davecame 608 106 1 Oct 2024 497th starfihs 608 106 2 Oct 2024 497th rschwa6308 🇺🇸 608 106 28 Oct 2024 497th snydej 608 106 21 Nov 2024 497th andrewjc2000 608 106 17 Jul 2025 497th qpwoeirut 608 106 22 days ago 497th travisdoesmath 608 106 3 days ago 504th bac0id 608 141 10 Jan 2025 505th daveberlin 606 106 27 Jun 2025 506th Seanharrs 606 117 15 Nov 2024 507th kaascevich 604 134 9 Jul 2025 508th Shanethegamer 🇺🇸 604 217 4 Oct 2024 509th commandblockguy 🇺🇸 603 107 7 Oct 2024 509th zbreit 🇺🇸 603 107 29 Oct 2024 509th StardustGogeta 603 107 30 Oct 2024 509th ZakkkkAttackkkk 🇵🇭 603 107 8 Feb 2025 513th Shanethegamer 🇺🇸 603 154 3 Oct 2024 514th MeWhenI 🇻🇦 602 73 2 Oct 2024 515th alemelis 602 93 1 Oct 2024 516th dokutan 598 117 3 Oct 2024 516th roguh 🇬🇹 598 117 13 Oct 2024 518th ravnskjaer 🇩🇰 598 195 20 Dec 2024 519th MeWhenI 🇻🇦 597 98 1 Oct 2024 520th neihousaigaai 597 108 4 Oct 2024 520th StefanHabel 🇨🇦 597 108 23 Jan 2025 520th CaedenHarper 🇨🇦 597 108 22 Jul 2025 520th InigoK 🇺🇸 597 108 19 days ago 524th SirBogman 🇺🇸 591 64 11 Jul 2025 525th arcpolaris 591 120 28 Jan 2025 Prev 451–525 of 752 Next