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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 481st DialFrost 🇸🇬 688 94 17ms 1 Oct 2024 482nd dokutan 687 116 7ms 19 Oct 2024 483rd MeWhenI 🇻🇦 686 68 223ms 2 Oct 2024 484th XenThe 🇬🇧 686 94 11ms 7 Jul 2025 485th ovs-code 🇩🇪 685 84 524ms 3 Oct 2024 486th KatieLG 🇬🇧 684 70 37ms 2 Oct 2025 487th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 488th the-zammers 680 163 149ms 1 Dec 2024 489th tailorspy 679 128 440ms 4 Oct 2024 490th GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 491st jusaka 676 42 2ms 2 days ago 492nd snoozingnewt 🇨🇦 676 95 78ms 23 Oct 2025 493rd jkelly467 674 99 2,591ms 22 Jan 2026 494th Yax42 🇫🇷 674 129 87ms 8 Jan 2026 494th emgordon154 674 129 60ms 8 Feb 2026 496th GolfingSuccess 🇬🇷 674 174 34ms 16 days ago 497th MeWhenI 🇻🇦 673 96 17ms 30 Jul 2025 498th jerrandolph 673 177 368ms 25 Sep 2025 498th CaedenHarper 🇨🇦 673 177 326ms 17 Nov 2025 500th HumanoidCPU 672 96 12ms 7 Mar 2025 501st error256 671 101 9ms 24 Oct 2024 502nd emgordon154 670 115 111ms 9 Dec 2025 503rd solisolu 669 103 2ms 8 days ago 504th Shanethegamer 🇺🇸 668 65 1ms 1 Oct 2024 505th CaedenHarper 🇨🇦 667 140 571ms 3 Oct 2025 506th dbut2 🇦🇺 666 179 327ms 31 Oct 2024 507th two-bad 🇬🇧 665 97 11ms 2 Oct 2024 507th LordSir101 665 97 10ms 10 Aug 2025 509th BlankSpruce 663 104 2ms 1 Oct 2024 510th yeminghan2021 663 131 65ms 3 Feb 2026 511th Shanethegamer 🇺🇸 663 172 39ms 2 Oct 2024 512th snoozingnewt 🇨🇦 662 180 338ms 2 Nov 2025 513th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 514th error256 661 142 156ms 31 May 2025 515th MeWhenI 🇻🇦 660 88 143ms 2 Oct 2024 515th Shanethegamer 🇺🇸 660 88 138ms 5 Oct 2024 517th GolfingSuccess 🇬🇷 660 98 18ms 5 Oct 2024 517th JunkIce 660 98 10ms 3 Dec 2024 519th BambooleanLogic 🇸🇪 658 98 12ms 21 Oct 2024 520th AlephSquirrel 657 146 4ms 14 May 2025 521st Herbert00709 🇵🇱 656 105 2ms 14 Jun 2025 522nd MeWhenI 🇻🇦 655 174 41ms 13 Feb 2025 523rd jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 524th albanian-laundromat 🇺🇸 655 291 12ms 7 days ago 525th MeWhenI 🇻🇦 654 88 524ms 2 Oct 2024 526th voytxt 🇨🇿 653 89 131ms 17 Apr 2025 526th dokutan 653 89 134ms 28 Jun 2025 528th SirBogman 🇺🇸 653 99 17ms 8 Oct 2024 528th solisolu 653 99 22ms 13 Mar 2026 530th rucin93 🇵🇱 652 144 156ms 28 Oct 2024 531st dokutan 651 99 10ms 28 Jun 2025 532nd w911 651 183 327ms 7 Oct 2024 533rd rniii 650 106 1ms 2 Oct 2024 533rd gastropner 650 106 2ms 11 Feb 2025 535th DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 536th scpchicken 🇵🇼 647 61 4ms 6 days ago 537th FlorianCassayre 🇫🇷 647 100 17ms 1 Oct 2024 537th bzijlema 🇳🇱 647 100 19ms 10 Oct 2024 537th bricknellj 647 100 20ms 4 Mar 2025 540th CaedenHarper 🇨🇦 645 100 10ms 22 Aug 2025 540th iczelia 🇩🇪 645 100 10ms 11 Oct 2025 540th Yax42 🇫🇷 645 100 10ms 27 Nov 2025 543rd koipondx86 645 123 2ms 8 Nov 2024 544th frankgraziano 645 128 7ms 21 Feb 2026 545th Apataras 644 145 390ms 25 Jun 2025 546th tomh1012 643 111 442ms 8 Sep 2025 547th Shanethegamer 🇺🇸 643 124 6ms 4 Oct 2024 548th elgan65536 🇺🇸 643 146 159ms 2 Oct 2024 548th luuumine 🇫🇷 643 146 151ms 26 Nov 2025 550th btjones0 640 101 18ms 2 Dec 2024 551st dokutan 640 146 379ms 23 Nov 2025 552nd stefangimmillaro 639 73 253ms 1 Oct 2024 553rd MeWhenI 🇻🇦 638 73 7ms 3 Oct 2024 554th Yax42 🇫🇷 638 108 2ms 17 days ago 555th emgordon154 636 111 4ms 12 Jan 2025 556th MeWhenI 🇻🇦 634 91 1,014ms 29 Aug 2025 557th annaproxy 634 102 18ms 1 Oct 2024 557th xyangst 634 102 10ms 1 Oct 2024 557th aksyristos 634 102 19ms 10 days ago 560th msbranicky 634 188 328ms 7 Jan 2025 First Prev 481–560 of 931 Next Last