Card Number Validation in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Minesweeper 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau 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 Erlang 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 Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau 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 Minesweeper 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 676th snoozingnewt 🇨🇦 487 249 26ms 2 Nov 2025 677th snoozingnewt 🇨🇦 486 117 904ms 2 Nov 2025 678th Mabeloid 🇳🇴 486 133 9ms 2 Oct 2024 679th jlangvand 486 141 2ms 15 Oct 2024 679th HumanoidCPU 486 141 1ms 7 Mar 2025 681st snoozingnewt 🇨🇦 482 173 332ms 2 Nov 2025 682nd alphafalfa 480 92 2ms 8 Nov 2024 683rd KatieLG 🇬🇧 479 120 476ms 1 Oct 2024 684th mitzal 479 180 58ms 9 Feb 2025 685th sciencedjinn 475 136 9ms 8 Nov 2024 685th ihatethefrench 475 136 16ms 4 Jan 2025 685th Florian-Mt 475 136 19ms 10 days ago 688th MiffOttah 475 150 431ms 6 Oct 2024 689th kurkale6ka 471 137 22ms 16 Oct 2024 689th 4ndyJ 🇬🇧 471 137 10ms 14 Nov 2024 689th Mikey-Beep 🇬🇧 471 137 16ms 6 Aug 2025 689th wobblybits 471 137 15ms 17 Aug 2025 693rd luca1339 471 198 371ms 4 Nov 2024 694th iczelia 🇩🇪 470 94 2ms 23 Sep 2025 695th ejini6969 468 102 32ms 14 Jun 2025 696th h-hh-hhh 🇺🇦 466 147 2ms 2 Nov 2024 697th snoozingnewt 🇨🇦 466 200 228ms 2 Nov 2025 698th scpchicken 🇵🇼 465 139 16ms 6 Oct 2024 699th snoozingnewt 🇨🇦 464 121 200ms 18 days ago 700th Jacob385 462 202 358ms 2 Oct 2024 701st NanduBC 461 140 10ms 1 Oct 2024 701st jmerle 🇳🇱 461 140 10ms 10 Jan 2025 701st RobertHoeh 461 140 9ms 3 Mar 2025 701st smilesformiles3 461 140 15ms 12 Jun 2025 701st artem-aramma 461 140 18ms 18 Jun 2025 701st Andrey2001 461 140 10ms 18 days ago 707th snoozingnewt 🇨🇦 460 96 2ms 2 Nov 2025 708th madex 🇩🇪 459 104 34ms 2 Oct 2024 709th FranklinJiaChen 458 141 13ms 2 Oct 2024 710th brimstonetrader 455 142 10ms 17 Oct 2024 710th codewrite 🇬🇧 455 142 11ms 5 May 2025 710th RobGLambert 455 142 16ms 8 Jun 2025 710th GodlyProgrammer1 455 142 16ms 22 days ago 714th snoozingnewt 🇨🇦 454 149 4ms 2 Nov 2025 715th IISResetMe 453 103 516ms 18 days ago 716th TheZwierzLF 🇵🇱 453 127 436ms 3 days ago 717th GeneralFabian 452 143 10ms 9 Dec 2024 717th CutSandstone 452 143 9ms 30 Jan 2025 717th kistlerf 🇨🇭 452 143 18ms 19 May 2025 720th dokutan 451 63 3ms 26 Nov 2024 721st snoozingnewt 🇨🇦 451 176 1ms 2 Nov 2025 722nd varhammer 🇷🇺 450 223 11ms 23 Feb 2025 723rd hiichbindermax 449 144 15ms 2 Oct 2024 723rd mathisfun271 449 144 9ms 14 Oct 2024 723rd bob-th 449 144 10ms 22 Oct 2024 726th dokutan 445 109 10ms 19 Oct 2024 727th Flekay 🇩🇪 445 145 10ms 10 Jul 2025 728th grey0ut 444 105 425ms 11 Jan 2025 729th croc54 442 146 12ms 15 Dec 2024 730th MyXoToD 🇩🇪 441 146 9ms 26 May 2025 731st Yewzir 🇧🇪 440 171 12ms 26 Dec 2024 732nd PyryL 🇫🇮 439 147 10ms 1 Mar 2025 733rd mbittner20 436 148 11ms 13 Oct 2024 733rd YAJUE114514 436 148 10ms 3 days ago 735th Andrey2001 435 132 720ms 18 days ago 736th JOrE20 🇺🇸 434 136 754ms 8 days ago 737th psaban 434 149 16ms 31 Jul 2025 737th TheZwierzLF 🇵🇱 434 149 11ms 20 days ago 739th KatieLG 🇬🇧 433 183 1ms 2 Oct 2025 740th dokutan 432 130 271ms 17 Oct 2024 741st Mabeloid 🇳🇴 432 133 538ms 2 Oct 2024 742nd KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 743rd jameswmccarty 431 150 10ms 5 Oct 2024 743rd yousefalizadeh 431 150 10ms 23 Oct 2024 743rd feherd 431 150 10ms 31 Oct 2024 743rd kadamkaustubh 431 150 9ms 8 Nov 2025 747th snoozingnewt 🇨🇦 430 111 33ms 2 Nov 2025 748th snoozingnewt 🇨🇦 426 268 27ms 2 Nov 2025 749th adamnielson42 🇺🇸 425 152 12ms 6 Oct 2024 749th voidgloom 425 152 10ms 22 Oct 2024 First Prev 676–750 of 845 Next Last