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 Calendar 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 Multitap Input 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 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 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar 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 Multitap Input 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 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 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 481st CaedenHarper 🇨🇦 667 140 571ms 3 Oct 2025 482nd dbut2 🇦🇺 666 179 297ms 31 Oct 2024 483rd two-bad 🇬🇧 664 97 11ms 2 Oct 2024 483rd LordSir101 664 97 10ms 10 Aug 2025 485th yeminghan2021 663 131 56ms 17 days ago 486th Shanethegamer 🇺🇸 663 172 39ms 2 Oct 2024 487th BlankSpruce 662 104 2ms 1 Oct 2024 488th snoozingnewt 🇨🇦 662 180 291ms 2 Nov 2025 489th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 490th MeWhenI 🇻🇦 659 88 131ms 2 Oct 2024 490th Shanethegamer 🇺🇸 659 88 140ms 5 Oct 2024 492nd GolfingSuccess 🇬🇷 659 98 17ms 5 Oct 2024 492nd JunkIce 659 98 10ms 3 Dec 2024 494th BambooleanLogic 🇸🇪 657 98 10ms 21 Oct 2024 495th error256 657 142 159ms 31 May 2025 496th AlephSquirrel 657 146 4ms 14 May 2025 497th Herbert00709 🇵🇱 656 105 2ms 14 Jun 2025 498th MeWhenI 🇻🇦 655 174 41ms 13 Feb 2025 499th jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 500th MeWhenI 🇻🇦 654 88 440ms 2 Oct 2024 501st SirBogman 🇺🇸 653 99 16ms 8 Oct 2024 502nd voytxt 🇨🇿 651 89 136ms 17 Apr 2025 502nd dokutan 651 89 120ms 28 Jun 2025 504th w911 651 183 293ms 7 Oct 2024 505th albanian-laundromat 651 293 14ms 8 Dec 2025 506th dokutan 650 99 10ms 28 Jun 2025 507th emgordon154 650 111 4ms 12 Jan 2025 508th rniii 649 106 1ms 2 Oct 2024 508th gastropner 649 106 2ms 11 Feb 2025 508th solisolu 649 106 2ms 7 days ago 511th DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 512th rucin93 🇵🇱 648 144 143ms 28 Oct 2024 513th FlorianCassayre 🇫🇷 646 100 17ms 1 Oct 2024 513th bzijlema 🇳🇱 646 100 18ms 10 Oct 2024 513th bricknellj 646 100 17ms 4 Mar 2025 516th koipondx86 645 123 2ms 8 Nov 2024 517th CaedenHarper 🇨🇦 644 100 10ms 22 Aug 2025 517th iczelia 🇩🇪 644 100 13ms 11 Oct 2025 517th Yax42 🇫🇷 644 100 10ms 27 Nov 2025 520th Apataras 644 145 390ms 25 Jun 2025 521st tomh1012 643 111 539ms 8 Sep 2025 522nd Shanethegamer 🇺🇸 643 124 6ms 4 Oct 2024 523rd btjones0 640 101 17ms 2 Dec 2024 524th dokutan 640 146 379ms 23 Nov 2025 525th stefangimmillaro 639 73 306ms 1 Oct 2024 526th dokutan 639 90 395ms 6 days ago 527th elgan65536 🇺🇸 639 146 160ms 2 Oct 2024 527th luuumine 🇫🇷 639 146 148ms 26 Nov 2025 529th MeWhenI 🇻🇦 638 73 8ms 3 Oct 2024 530th annaproxy 634 102 17ms 1 Oct 2024 530th xyangst 634 102 11ms 1 Oct 2024 530th solisolu 634 102 10ms 31 Dec 2025 533rd msbranicky 634 188 279ms 7 Jan 2025 534th MeWhenI 🇻🇦 632 91 994ms 29 Aug 2025 535th Shanethegamer 🇺🇸 631 74 285ms 16 Oct 2024 536th Florian-Mt 631 102 10ms 5 Dec 2025 537th albanian-laundromat 631 264 1,644ms 3 Nov 2025 538th robin-scragg 627 103 11ms 21 Aug 2025 539th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 540th Jonatan6 🇩🇰 626 110 2ms 24 Oct 2024 541st AlephSquirrel 625 40 43ms 1 Oct 2024 542nd dokutan 624 127 2ms 10 Dec 2024 543rd Yax42 🇫🇷 620 111 2ms 9 Jan 2026 544th codereport 🇨🇦 619 63 33ms 2 Oct 2024 545th SirBogman 🇺🇸 619 93 503ms 23 Jul 2025 546th BalaM314 619 104 13ms 4 Feb 2025 546th acollett89 619 104 10ms 15 Jul 2025 548th MarcMush 🇫🇷 617 91 813ms 8 Oct 2024 549th Ripick 617 135 346ms 23 Mar 2025 550th bac0id 616 141 405ms 10 Jan 2025 551st fourth-bit 615 105 17ms 1 Oct 2024 551st jared-hughes 615 105 16ms 3 Oct 2024 551st mattyhempstead 615 105 26ms 7 Oct 2024 554th olleicua 🇺🇸 613 78 34ms 18 Oct 2024 555th evnu 612 147 82ms 12 Oct 2025 556th davecame 610 106 17ms 1 Oct 2024 556th starfihs 610 106 10ms 2 Oct 2024 556th rschwa6308 🇺🇸 610 106 16ms 28 Oct 2024 556th snydej 610 106 17ms 21 Nov 2024 556th andrewjc2000 610 106 17ms 17 Jul 2025 First Prev 481–560 of 891 Next Last