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 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 Topological Sort 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Topological Sort Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 601st HumanoidCPU 488 145 5 Oct 2024 602nd Mabeloid 🇳🇴 484 133 2 Oct 2024 602nd Emutis 🇱🇹 484 133 4 Feb 2025 604th h-hh-hhh 🇺🇦 484 177 2 Nov 2024 605th Mabeloid 🇳🇴 483 145 2 Oct 2024 606th alphafalfa 477 92 8 Nov 2024 607th KatieLG 🇬🇧 477 120 1 Oct 2024 608th KatieLG 🇬🇧 476 108 13 Oct 2024 609th h-hh-hhh 🇺🇦 476 147 2 Nov 2024 610th mitzal 476 180 9 Feb 2025 611th sciencedjinn 474 136 8 Nov 2024 611th ihatethefrench 474 136 4 Jan 2025 613th MiffOttah 472 150 6 Oct 2024 614th kurkale6ka 470 137 16 Oct 2024 614th 4ndyJ 🇬🇧 470 137 14 Nov 2024 616th Maximizer02 468 201 1 Oct 2024 617th ejini6969 467 102 14 Jun 2025 618th scpchicken 🇵🇼 463 139 6 Oct 2024 619th NanduBC 460 140 1 Oct 2024 619th Mikey-Beep 🇬🇧 460 140 7 Oct 2024 619th jmerle 🇳🇱 460 140 10 Jan 2025 619th RobertHoeh 460 140 3 Mar 2025 619th smilesformiles3 460 140 12 Jun 2025 619th artem-aramma 460 140 18 Jun 2025 625th Yewzir 🇧🇪 460 171 26 Dec 2024 626th madex 🇩🇪 458 104 2 Oct 2024 627th FranklinJiaChen 457 141 2 Oct 2024 628th brimstonetrader 454 142 17 Oct 2024 628th codewrite 🇬🇧 454 142 5 May 2025 628th RobGLambert 454 142 8 Jun 2025 631st dokutan 451 63 26 Nov 2024 632nd GeneralFabian 451 143 9 Dec 2024 632nd CutSandstone 451 143 30 Jan 2025 632nd kistlerf 🇨🇭 451 143 19 May 2025 635th IISResetMe 449 104 27 Mar 2025 636th varhammer 🇷🇺 448 223 23 Feb 2025 637th hiichbindermax 447 144 2 Oct 2024 637th mathisfun271 447 144 14 Oct 2024 637th bob-th 447 144 22 Oct 2024 640th dokutan 445 109 19 Oct 2024 641st grey0ut 444 105 11 Jan 2025 642nd Flekay 🇩🇪 444 145 15 days ago 643rd croc54 441 146 15 Dec 2024 644th MyXoToD 🇩🇪 440 146 26 May 2025 645th PyryL 🇫🇮 438 147 1 Mar 2025 646th mbittner20 435 148 13 Oct 2024 647th dokutan 431 130 17 Oct 2024 648th Mabeloid 🇳🇴 430 133 2 Oct 2024 649th jameswmccarty 429 150 5 Oct 2024 649th yousefalizadeh 429 150 23 Oct 2024 649th feherd 429 150 31 Oct 2024 649th TheZwierzLF 🇵🇱 429 150 17 May 2025 653rd adamnielson42 🇺🇸 424 152 6 Oct 2024 653rd voidgloom 424 152 22 Oct 2024 655th snoozingnewt 🇺🇸 417 137 27 Jan 2025 656th MeWhenI 🇻🇦 417 143 2 Oct 2024 657th cdesodt 416 155 16 Oct 2024 658th lhulinsky 410 157 21 Oct 2024 659th ThatAlo 408 158 9 Dec 2024 660th dieggsy 405 247 10 Oct 2024 661st Mabeloid 🇳🇴 404 159 12 Oct 2024 662nd CheeseCake628 🇳🇴 403 160 5 Nov 2024 663rd pres-abhisheksinha 400 161 8 Oct 2024 664th ibixina 398 162 13 Oct 2024 664th TheAtrossian 398 162 5 Jan 2025 666th Ralac07 🇦🇺 396 162 3 Oct 2024 667th Vaekor 390 165 15 Dec 2024 668th fischfood 383 176 22 Oct 2024 669th JesseNoEyes 🇺🇸 381 169 1 Oct 2024 670th c0d3-4-F00d 🇩🇪 380 184 9 Jan 2025 671st zyc-2024 🇨🇳 379 170 5 Oct 2024 672nd ehulinsky 🇺🇸 378 158 2 Apr 2025 673rd ComputerKWasTaken 🇺🇸 377 171 14 Oct 2024 674th RedzGoose 🇦🇺 369 187 2 Oct 2024 675th RobGLambert 369 232 8 Jun 2025 Prev 601–675 of 720 Next