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 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 Hilbert Curve 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 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 Groovy 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 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 Groovy 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 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 Hilbert Curve 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 bac0id 648 180 9 Jan 2025 452nd w911 646 183 7 Oct 2024 453rd FlorianCassayre 🇫🇷 645 100 1 Oct 2024 453rd bzijlema 🇳🇱 645 100 10 Oct 2024 453rd bricknellj 645 100 4 Mar 2025 456th rucin93 🇵🇱 645 144 28 Oct 2024 457th Shanethegamer 🇺🇸 643 124 4 Oct 2024 458th koipondx86 641 123 8 Nov 2024 459th stefangimmillaro 639 73 1 Oct 2024 460th CaedenHarper 🇨🇦 639 185 3 Jan 2025 461st btjones0 638 101 2 Dec 2024 462nd yoshykai 637 183 12 Apr 2025 463rd Jonatan6 🇩🇰 636 110 24 Oct 2024 464th elgan65536 636 146 2 Oct 2024 465th annaproxy 632 102 1 Oct 2024 465th xyangst 632 102 1 Oct 2024 467th Shanethegamer 🇺🇸 631 74 16 Oct 2024 468th dokutan 629 91 19 Oct 2024 469th msbranicky 628 188 7 Jan 2025 470th AlephSquirrel 625 40 1 Oct 2024 471st tomh1012 622 114 17 Oct 2024 472nd dokutan 621 127 10 Dec 2024 473rd mossiegoat 620 104 7 hours ago 474th not-a-pokemon 619 113 27 days ago 475th DialFrost 🇸🇬 619 304 6 days ago 476th BalaM314 618 104 4 Feb 2025 476th acollett89 618 104 15 Jul 2025 478th codereport 🇨🇦 617 63 2 Oct 2024 479th Schmitt-Very-Cool 617 189 3 Feb 2025 480th SirBogman 🇺🇸 616 93 27 days ago 481st MarcMush 🇫🇷 615 91 8 Oct 2024 482nd Ripick 615 135 23 Mar 2025 483rd fourth-bit 614 105 1 Oct 2024 483rd jared-hughes 614 105 3 Oct 2024 483rd mattyhempstead 614 105 7 Oct 2024 486th jupj 🇫🇮 614 114 20 Jul 2025 487th olleicua 🇺🇸 612 78 18 Oct 2024 488th davecame 608 106 1 Oct 2024 488th starfihs 608 106 2 Oct 2024 488th rschwa6308 🇺🇸 608 106 28 Oct 2024 488th snydej 608 106 21 Nov 2024 488th andrewjc2000 608 106 17 Jul 2025 488th qpwoeirut 608 106 8 hours ago 494th bac0id 608 141 10 Jan 2025 495th daveberlin 606 106 27 Jun 2025 496th Seanharrs 606 117 15 Nov 2024 497th Shanethegamer 🇺🇸 604 217 4 Oct 2024 498th Shanethegamer 🇺🇸 603 154 3 Oct 2024 499th MeWhenI 🇻🇦 602 73 2 Oct 2024 500th alemelis 602 93 1 Oct 2024 501st commandblockguy 🇺🇸 602 107 7 Oct 2024 501st zbreit 🇺🇸 602 107 29 Oct 2024 501st StardustGogeta 602 107 30 Oct 2024 501st ZakkkkAttackkkk 🇵🇭 602 107 8 Feb 2025 505th kaascevich 601 134 9 Jul 2025 506th albanian-laundromat 599 159 12 Jul 2025 507th dokutan 598 117 3 Oct 2024 507th roguh 🇬🇹 598 117 13 Oct 2024 509th ravnskjaer 🇩🇰 598 195 20 Dec 2024 510th MeWhenI 🇻🇦 597 98 1 Oct 2024 511th neihousaigaai 597 108 4 Oct 2024 511th StefanHabel 🇨🇦 597 108 23 Jan 2025 511th CaedenHarper 🇨🇦 597 108 27 days ago 514th SirBogman 🇺🇸 591 64 11 Jul 2025 515th arcpolaris 591 120 28 Jan 2025 516th luca1339 589 198 4 Nov 2024 517th bac0id 588 119 10 Jan 2025 518th DialFrost 🇸🇬 586 67 25 Jan 2025 519th cros107 586 110 1 Jan 2025 519th guilhem-roy 🇫🇷 586 110 29 May 2025 521st JunkIce 584 98 3 Dec 2024 522nd gigaprofisi 🇺🇸 584 110 8 days ago 523rd dokutan 584 174 21 Feb 2025 524th mousetail 🇳🇱 581 111 6 Oct 2024 525th Trip-kun 580 136 5 Oct 2024 Prev 451–525 of 737 Next