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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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL 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 ><> ALGOL 68 ArkScript 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 APL 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 501st error256 671 101 5ms 24 Oct 2024 502nd emgordon154 670 115 111ms 9 Dec 2025 503rd scpchicken 🇵🇼 669 59 4ms 23 hours ago 504th Shanethegamer 🇺🇸 669 65 1ms 1 Oct 2024 505th solisolu 669 103 2ms 25 days ago 506th cuvam 🇺🇸 667 97 18ms 5 days ago 507th CaedenHarper 🇨🇦 667 140 531ms 3 Oct 2025 508th dbut2 🇦🇺 666 179 327ms 31 Oct 2024 509th two-bad 🇬🇧 665 97 15ms 2 Oct 2024 509th LordSir101 665 97 10ms 10 Aug 2025 511th BlankSpruce 663 104 2ms 1 Oct 2024 512th yeminghan2021 663 131 65ms 3 Feb 2026 513th Shanethegamer 🇺🇸 663 172 39ms 2 Oct 2024 514th snoozingnewt 🇨🇦 662 180 338ms 2 Nov 2025 515th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 516th MeWhenI 🇻🇦 660 88 129ms 2 Oct 2024 516th Shanethegamer 🇺🇸 660 88 135ms 5 Oct 2024 518th GolfingSuccess 🇬🇷 660 98 18ms 5 Oct 2024 518th JunkIce 660 98 10ms 3 Dec 2024 520th error256 660 142 171ms 31 May 2025 521st GolfingSuccess 🇬🇷 660 174 38ms 25 Mar 2026 522nd BambooleanLogic 🇸🇪 658 98 12ms 21 Oct 2024 523rd Herbert00709 🇵🇱 657 105 2ms 14 Jun 2025 524th AlephSquirrel 657 146 4ms 14 May 2025 525th denkyuu1 656 73 39ms 8 days ago 526th MeWhenI 🇻🇦 655 174 41ms 13 Feb 2025 527th albanian-laundromat 🇺🇸 655 291 12ms 24 days ago 528th MeWhenI 🇻🇦 654 88 524ms 2 Oct 2024 529th voytxt 🇨🇿 653 89 131ms 17 Apr 2025 529th dokutan 653 89 132ms 28 Jun 2025 531st SirBogman 🇺🇸 653 99 17ms 8 Oct 2024 531st solisolu 653 99 22ms 13 Mar 2026 533rd prestosilver 🇺🇸 653 128 407ms 5 days ago 534th dokutan 651 99 12ms 28 Jun 2025 535th rucin93 🇵🇱 651 144 153ms 28 Oct 2024 536th w911 651 183 327ms 7 Oct 2024 537th DialFrost 🇸🇬 650 67 2ms 22 Dec 2024 538th rniii 650 106 1ms 2 Oct 2024 538th gastropner 650 106 2ms 11 Feb 2025 538th prestosilver 🇺🇸 650 106 2ms 5 days ago 541st albanian-laundromat 🇺🇸 648 257 1,211ms 24 hours ago 542nd FlorianCassayre 🇫🇷 647 100 17ms 1 Oct 2024 542nd bzijlema 🇳🇱 647 100 19ms 10 Oct 2024 542nd bricknellj 647 100 20ms 4 Mar 2025 545th CaedenHarper 🇨🇦 645 100 10ms 22 Aug 2025 545th iczelia 🇩🇪 645 100 13ms 11 Oct 2025 545th Yax42 🇫🇷 645 100 11ms 27 Nov 2025 548th koipondx86 645 123 2ms 8 Nov 2024 549th frankgraziano 645 128 8ms 21 Feb 2026 550th tomh1012 644 111 474ms 8 Sep 2025 551st Apataras 644 145 459ms 25 Jun 2025 552nd Shanethegamer 🇺🇸 643 124 8ms 4 Oct 2024 553rd elgan65536 🇺🇸 642 146 169ms 2 Oct 2024 553rd luuumine 🇫🇷 642 146 153ms 26 Nov 2025 555th stefangimmillaro 641 73 324ms 1 Oct 2024 556th btjones0 640 101 18ms 2 Dec 2024 557th dokutan 640 146 455ms 23 Nov 2025 558th MeWhenI 🇻🇦 638 73 7ms 3 Oct 2024 559th Yax42 🇫🇷 638 108 2ms 24 Mar 2026 560th emgordon154 636 111 4ms 12 Jan 2025 561st MeWhenI 🇻🇦 634 91 750ms 29 Aug 2025 562nd annaproxy 634 102 18ms 1 Oct 2024 562nd xyangst 634 102 10ms 1 Oct 2024 562nd aksyristos 634 102 19ms 27 days ago 562nd scpchicken 🇵🇼 634 102 17ms 15 days ago 562nd vang1ong7ang 🇦🇶 634 102 17ms 3 days ago 567th msbranicky 634 188 328ms 7 Jan 2025 568th Shanethegamer 🇺🇸 632 74 290ms 16 Oct 2024 569th Florian-Mt 632 102 11ms 5 Dec 2025 570th robin-scragg 628 103 12ms 21 Aug 2025 571st Jonatan6 🇩🇰 627 110 2ms 24 Oct 2024 572nd DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 573rd AlephSquirrel 625 40 47ms 1 Oct 2024 574th dokutan 624 127 2ms 10 Dec 2024 575th BalaM314 620 104 11ms 4 Feb 2025 575th acollett89 620 104 11ms 15 Jul 2025 577th Ripick 620 135 390ms 23 Mar 2025 578th SirBogman 🇺🇸 619 93 529ms 23 Jul 2025 579th MarcMush 🇫🇷 618 91 830ms 8 Oct 2024 580th fourth-bit 616 105 18ms 1 Oct 2024 580th jared-hughes 616 105 17ms 3 Oct 2024 580th mattyhempstead 616 105 28ms 7 Oct 2024 583rd bac0id 616 141 426ms 10 Jan 2025 584th olleicua 🇺🇸 614 78 38ms 18 Oct 2024 585th evnu 612 147 87ms 12 Oct 2025 586th Seanharrs 🇦🇺 611 117 454ms 15 Nov 2024 587th vang1ong7ang 🇦🇶 610 41 45ms 3 days ago 588th davecame 610 106 18ms 1 Oct 2024 588th starfihs 610 106 11ms 2 Oct 2024 588th rschwa6308 🇺🇸 610 106 19ms 28 Oct 2024 588th snydej 610 106 20ms 21 Nov 2024 588th andrewjc2000 610 106 19ms 17 Jul 2025 588th travisdoesmath 610 106 18ms 7 Sep 2025 594th not-a-pokemon 610 113 1ms 23 Jul 2025 595th kaascevich 609 134 126ms 9 Jul 2025 596th Shanethegamer 🇺🇸 609 154 153ms 3 Oct 2024 597th daveberlin 608 106 11ms 27 Jun 2025 598th alemelis 605 93 468ms 1 Oct 2024 599th jupj 🇫🇮 605 114 2ms 20 Jul 2025 600th albanian-laundromat 🇺🇸 604 72 1ms 25 Feb 2026 First Prev 501–600 of 941 Next Last