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 🇨🇦 486 117 904ms 2 Nov 2025 677th Mabeloid 🇳🇴 486 133 9ms 2 Oct 2024 678th jlangvand 486 141 2ms 15 Oct 2024 678th HumanoidCPU 486 141 1ms 7 Mar 2025 680th snoozingnewt 🇨🇦 482 173 332ms 2 Nov 2025 681st alphafalfa 480 92 2ms 8 Nov 2024 682nd KatieLG 🇬🇧 479 120 476ms 1 Oct 2024 683rd mitzal 479 180 58ms 9 Feb 2025 684th sciencedjinn 475 136 9ms 8 Nov 2024 684th ihatethefrench 475 136 16ms 4 Jan 2025 684th Florian-Mt 475 136 19ms 9 days ago 687th MiffOttah 475 150 431ms 6 Oct 2024 688th kurkale6ka 471 137 22ms 16 Oct 2024 688th 4ndyJ 🇬🇧 471 137 10ms 14 Nov 2024 688th Mikey-Beep 🇬🇧 471 137 16ms 6 Aug 2025 688th wobblybits 471 137 15ms 17 Aug 2025 692nd luca1339 471 198 371ms 4 Nov 2024 693rd iczelia 🇩🇪 470 94 2ms 23 Sep 2025 694th ejini6969 468 102 32ms 14 Jun 2025 695th h-hh-hhh 🇺🇦 466 147 2ms 2 Nov 2024 696th snoozingnewt 🇨🇦 466 200 228ms 2 Nov 2025 697th scpchicken 🇵🇼 465 139 16ms 6 Oct 2024 698th snoozingnewt 🇨🇦 464 121 200ms 18 days ago 699th Jacob385 462 202 358ms 2 Oct 2024 700th NanduBC 461 140 10ms 1 Oct 2024 700th jmerle 🇳🇱 461 140 10ms 10 Jan 2025 700th RobertHoeh 461 140 9ms 3 Mar 2025 700th smilesformiles3 461 140 15ms 12 Jun 2025 700th artem-aramma 461 140 18ms 18 Jun 2025 700th Andrey2001 461 140 10ms 17 days ago 706th snoozingnewt 🇨🇦 460 96 2ms 2 Nov 2025 707th madex 🇩🇪 459 104 34ms 2 Oct 2024 708th FranklinJiaChen 458 141 13ms 2 Oct 2024 709th brimstonetrader 455 142 10ms 17 Oct 2024 709th codewrite 🇬🇧 455 142 11ms 5 May 2025 709th RobGLambert 455 142 16ms 8 Jun 2025 709th GodlyProgrammer1 455 142 16ms 22 days ago 713th snoozingnewt 🇨🇦 454 149 4ms 2 Nov 2025 714th IISResetMe 453 103 516ms 18 days ago 715th TheZwierzLF 🇵🇱 453 127 436ms 3 days ago 716th GeneralFabian 452 143 10ms 9 Dec 2024 716th CutSandstone 452 143 9ms 30 Jan 2025 716th kistlerf 🇨🇭 452 143 18ms 19 May 2025 719th dokutan 451 63 3ms 26 Nov 2024 720th snoozingnewt 🇨🇦 451 176 1ms 2 Nov 2025 721st varhammer 🇷🇺 450 223 11ms 23 Feb 2025 722nd hiichbindermax 449 144 15ms 2 Oct 2024 722nd mathisfun271 449 144 9ms 14 Oct 2024 722nd bob-th 449 144 10ms 22 Oct 2024 725th dokutan 445 109 10ms 19 Oct 2024 726th Flekay 🇩🇪 445 145 10ms 10 Jul 2025 727th grey0ut 444 105 425ms 11 Jan 2025 728th croc54 442 146 12ms 15 Dec 2024 729th MyXoToD 🇩🇪 441 146 9ms 26 May 2025 730th Yewzir 🇧🇪 440 171 12ms 26 Dec 2024 731st PyryL 🇫🇮 439 147 10ms 1 Mar 2025 732nd mbittner20 436 148 11ms 13 Oct 2024 732nd YAJUE114514 436 148 10ms 3 days ago 734th Andrey2001 435 132 720ms 17 days ago 735th JOrE20 🇺🇸 434 136 754ms 7 days ago 736th psaban 434 149 16ms 31 Jul 2025 736th TheZwierzLF 🇵🇱 434 149 11ms 20 days ago 738th KatieLG 🇬🇧 433 183 1ms 2 Oct 2025 739th dokutan 432 130 271ms 17 Oct 2024 740th Mabeloid 🇳🇴 432 133 538ms 2 Oct 2024 741st KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 742nd jameswmccarty 431 150 10ms 5 Oct 2024 742nd yousefalizadeh 431 150 10ms 23 Oct 2024 742nd feherd 431 150 10ms 31 Oct 2024 742nd kadamkaustubh 431 150 9ms 8 Nov 2025 746th snoozingnewt 🇨🇦 430 111 33ms 2 Nov 2025 747th snoozingnewt 🇨🇦 426 268 27ms 2 Nov 2025 748th adamnielson42 🇺🇸 425 152 12ms 6 Oct 2024 748th voidgloom 425 152 10ms 22 Oct 2024 748th omero-san 425 152 9ms 22 Sep 2025 First Prev 676–750 of 845 Next Last