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 dokutan 649 99 28 Jun 2025 452nd bac0id 648 180 9 Jan 2025 453rd w911 646 183 7 Oct 2024 454th FlorianCassayre 🇫🇷 645 100 1 Oct 2024 454th bzijlema 🇳🇱 645 100 10 Oct 2024 454th bricknellj 645 100 4 Mar 2025 457th rucin93 🇵🇱 645 144 28 Oct 2024 458th CaedenHarper 🇨🇦 643 100 22 hours ago 459th Shanethegamer 🇺🇸 643 124 4 Oct 2024 460th koipondx86 641 123 8 Nov 2024 461st stefangimmillaro 639 73 1 Oct 2024 462nd CaedenHarper 🇨🇦 639 185 3 Jan 2025 463rd btjones0 638 101 2 Dec 2024 464th yoshykai 637 183 12 Apr 2025 465th Jonatan6 🇩🇰 636 110 24 Oct 2024 466th elgan65536 636 146 2 Oct 2024 467th annaproxy 632 102 1 Oct 2024 467th xyangst 632 102 1 Oct 2024 469th Shanethegamer 🇺🇸 631 74 16 Oct 2024 470th dokutan 629 91 19 Oct 2024 471st msbranicky 628 188 7 Jan 2025 472nd mossiegoat 626 103 2 days ago 473rd AlephSquirrel 625 40 1 Oct 2024 474th tomh1012 622 114 17 Oct 2024 475th dokutan 621 127 10 Dec 2024 476th not-a-pokemon 619 113 23 Jul 2025 477th DialFrost 🇸🇬 619 304 10 days ago 478th BalaM314 618 104 4 Feb 2025 478th acollett89 618 104 15 Jul 2025 480th codereport 🇨🇦 617 63 2 Oct 2024 481st Schmitt-Very-Cool 617 189 3 Feb 2025 482nd SirBogman 🇺🇸 616 93 23 Jul 2025 483rd MarcMush 🇫🇷 615 91 8 Oct 2024 484th Ripick 615 135 23 Mar 2025 485th fourth-bit 614 105 1 Oct 2024 485th jared-hughes 614 105 3 Oct 2024 485th mattyhempstead 614 105 7 Oct 2024 488th jupj 🇫🇮 614 114 20 Jul 2025 489th olleicua 🇺🇸 612 78 18 Oct 2024 490th davecame 608 106 1 Oct 2024 490th starfihs 608 106 2 Oct 2024 490th rschwa6308 🇺🇸 608 106 28 Oct 2024 490th snydej 608 106 21 Nov 2024 490th andrewjc2000 608 106 17 Jul 2025 490th qpwoeirut 608 106 4 days ago 496th bac0id 608 141 10 Jan 2025 497th daveberlin 606 106 27 Jun 2025 498th Seanharrs 606 117 15 Nov 2024 499th Shanethegamer 🇺🇸 604 217 4 Oct 2024 500th commandblockguy 🇺🇸 603 107 7 Oct 2024 500th zbreit 🇺🇸 603 107 29 Oct 2024 500th StardustGogeta 603 107 30 Oct 2024 500th ZakkkkAttackkkk 🇵🇭 603 107 8 Feb 2025 504th Shanethegamer 🇺🇸 603 154 3 Oct 2024 505th MeWhenI 🇻🇦 602 73 2 Oct 2024 506th alemelis 602 93 1 Oct 2024 507th kaascevich 601 134 9 Jul 2025 508th dokutan 598 117 3 Oct 2024 508th roguh 🇬🇹 598 117 13 Oct 2024 510th ravnskjaer 🇩🇰 598 195 20 Dec 2024 511th MeWhenI 🇻🇦 597 98 1 Oct 2024 512th neihousaigaai 597 108 4 Oct 2024 512th StefanHabel 🇨🇦 597 108 23 Jan 2025 512th CaedenHarper 🇨🇦 597 108 22 Jul 2025 512th InigoK 🇺🇸 597 108 38 hours ago 516th SirBogman 🇺🇸 591 64 11 Jul 2025 517th arcpolaris 591 120 28 Jan 2025 518th luca1339 589 198 4 Nov 2024 519th bac0id 588 119 10 Jan 2025 520th DialFrost 🇸🇬 586 67 25 Jan 2025 521st cros107 586 110 1 Jan 2025 521st guilhem-roy 🇫🇷 586 110 29 May 2025 523rd JunkIce 584 98 3 Dec 2024 524th gigaprofisi 🇺🇸 584 110 12 days ago 525th dokutan 584 174 21 Feb 2025 Prev 451–525 of 740 Next