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 601st Europe2048 496 130 2 Oct 2024 601st nstearns96 🇬🇧 496 130 2 Oct 2024 601st rollershutter 496 130 10 Jan 2025 601st Stockoh 🇫🇷 496 130 4 Jul 2025 605th jlangvand 496 141 15 Oct 2024 605th HumanoidCPU 496 141 7 Mar 2025 607th inverseLorentz 🇦🇺 492 131 7 Oct 2024 607th sciencejiho 492 131 11 Feb 2025 607th Jaydosu 492 131 11 Apr 2025 610th TheRealOhead 🇺🇸 490 131 1 Oct 2024 611th HumanoidCPU 489 145 5 Oct 2024 612th Mabeloid 🇳🇴 485 133 2 Oct 2024 612th Emutis 🇱🇹 485 133 4 Feb 2025 614th h-hh-hhh 🇺🇦 484 177 2 Nov 2024 615th Mabeloid 🇳🇴 483 145 2 Oct 2024 616th alphafalfa 477 92 8 Nov 2024 617th KatieLG 🇬🇧 477 120 1 Oct 2024 618th KatieLG 🇬🇧 476 108 13 Oct 2024 619th h-hh-hhh 🇺🇦 476 147 2 Nov 2024 620th mitzal 476 180 9 Feb 2025 621st sciencedjinn 474 136 8 Nov 2024 621st ihatethefrench 474 136 4 Jan 2025 623rd MiffOttah 473 150 6 Oct 2024 624th kurkale6ka 471 137 16 Oct 2024 624th 4ndyJ 🇬🇧 471 137 14 Nov 2024 624th Mikey-Beep 🇬🇧 471 137 12 days ago 624th wobblybits 471 137 45 hours ago 628th ejini6969 468 102 14 Jun 2025 629th scpchicken 🇵🇼 464 139 6 Oct 2024 630th NanduBC 460 140 1 Oct 2024 630th jmerle 🇳🇱 460 140 10 Jan 2025 630th RobertHoeh 460 140 3 Mar 2025 630th smilesformiles3 460 140 12 Jun 2025 630th artem-aramma 460 140 18 Jun 2025 635th Yewzir 🇧🇪 460 171 26 Dec 2024 636th madex 🇩🇪 459 104 2 Oct 2024 637th FranklinJiaChen 457 141 2 Oct 2024 638th brimstonetrader 454 142 17 Oct 2024 638th codewrite 🇬🇧 454 142 5 May 2025 638th RobGLambert 454 142 8 Jun 2025 641st dokutan 451 63 26 Nov 2024 642nd GeneralFabian 451 143 9 Dec 2024 642nd CutSandstone 451 143 30 Jan 2025 642nd kistlerf 🇨🇭 451 143 19 May 2025 645th IISResetMe 449 104 27 Mar 2025 646th hiichbindermax 448 144 2 Oct 2024 646th mathisfun271 448 144 14 Oct 2024 646th bob-th 448 144 22 Oct 2024 649th varhammer 🇷🇺 448 223 23 Feb 2025 650th dokutan 445 109 19 Oct 2024 651st Flekay 🇩🇪 445 145 10 Jul 2025 652nd grey0ut 444 105 11 Jan 2025 653rd croc54 441 146 15 Dec 2024 654th MyXoToD 🇩🇪 440 146 26 May 2025 655th PyryL 🇫🇮 438 147 1 Mar 2025 656th mbittner20 436 148 13 Oct 2024 657th psaban 433 149 18 days ago 658th dokutan 431 130 17 Oct 2024 659th Mabeloid 🇳🇴 430 133 2 Oct 2024 660th jameswmccarty 430 150 5 Oct 2024 660th yousefalizadeh 430 150 23 Oct 2024 660th feherd 430 150 31 Oct 2024 660th TheZwierzLF 🇵🇱 430 150 17 May 2025 664th adamnielson42 🇺🇸 424 152 6 Oct 2024 664th voidgloom 424 152 22 Oct 2024 666th snoozingnewt 🇺🇸 418 137 27 Jan 2025 667th MeWhenI 🇻🇦 417 143 2 Oct 2024 668th FortuiteMan 416 155 16 Oct 2024 669th lhulinsky 411 157 21 Oct 2024 669th osNiko 🇧🇷 411 157 3 days ago 671st ThatAlo 408 158 9 Dec 2024 672nd dieggsy 405 247 10 Oct 2024 673rd Mabeloid 🇳🇴 404 159 12 Oct 2024 674th CheeseCake628 🇳🇴 403 160 5 Nov 2024 675th pres-abhisheksinha 400 161 8 Oct 2024 Prev 601–675 of 736 Next