Card Number Validation in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 676th luca1339 471 198 302ms 4 Nov 2024 677th iczelia 🇩🇪 470 94 3ms 23 Sep 2025 678th ejini6969 468 102 35ms 14 Jun 2025 679th snoozingnewt 🇺🇸 465 200 230ms 20 days ago 680th scpchicken 🇵🇼 464 139 16ms 6 Oct 2024 681st Jacob385 462 202 298ms 2 Oct 2024 682nd NanduBC 461 140 10ms 1 Oct 2024 682nd jmerle 🇳🇱 461 140 10ms 10 Jan 2025 682nd RobertHoeh 461 140 9ms 3 Mar 2025 682nd smilesformiles3 461 140 15ms 12 Jun 2025 682nd artem-aramma 461 140 16ms 18 Jun 2025 687th snoozingnewt 🇺🇸 460 96 2ms 20 days ago 688th Yewzir 🇧🇪 460 171 12ms 26 Dec 2024 689th madex 🇩🇪 459 104 36ms 2 Oct 2024 690th FranklinJiaChen 458 141 10ms 2 Oct 2024 691st brimstonetrader 455 142 10ms 17 Oct 2024 691st codewrite 🇬🇧 455 142 13ms 5 May 2025 691st RobGLambert 455 142 16ms 8 Jun 2025 691st GodlyProgrammer1 455 142 17ms 26 mins ago 695th snoozingnewt 🇺🇸 454 149 5ms 20 days ago 696th snoozingnewt 🇺🇸 453 124 228ms 20 days ago 697th GeneralFabian 452 143 9ms 9 Dec 2024 697th CutSandstone 452 143 9ms 30 Jan 2025 697th kistlerf 🇨🇭 452 143 16ms 19 May 2025 700th dokutan 451 63 3ms 26 Nov 2024 701st snoozingnewt 🇺🇸 451 176 2ms 20 days ago 702nd varhammer 🇷🇺 450 223 12ms 23 Feb 2025 703rd IISResetMe 449 104 474ms 27 Mar 2025 704th hiichbindermax 448 144 15ms 2 Oct 2024 704th mathisfun271 448 144 9ms 14 Oct 2024 704th bob-th 448 144 10ms 22 Oct 2024 707th dokutan 445 109 10ms 19 Oct 2024 708th Flekay 🇩🇪 445 145 10ms 10 Jul 2025 709th grey0ut 444 105 415ms 11 Jan 2025 710th croc54 442 146 11ms 15 Dec 2024 711th MyXoToD 🇩🇪 441 146 9ms 26 May 2025 712th PyryL 🇫🇮 439 147 10ms 1 Mar 2025 713th mbittner20 436 148 9ms 13 Oct 2024 714th psaban 433 149 16ms 31 Jul 2025 715th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 716th dokutan 432 130 271ms 17 Oct 2024 717th Mabeloid 🇳🇴 432 133 549ms 2 Oct 2024 718th KatieLG 🇬🇧 431 108 7ms 13 Oct 2024 719th snoozingnewt 🇺🇸 430 111 36ms 20 days ago 720th jameswmccarty 430 150 9ms 5 Oct 2024 720th yousefalizadeh 430 150 10ms 23 Oct 2024 720th feherd 430 150 12ms 31 Oct 2024 720th TheZwierzLF 🇵🇱 430 150 10ms 17 May 2025 720th kadamkaustubh 430 150 9ms 14 days ago 725th snoozingnewt 🇺🇸 426 268 28ms 20 days ago 726th adamnielson42 🇺🇸 425 152 9ms 6 Oct 2024 726th voidgloom 425 152 10ms 22 Oct 2024 726th omero-san 425 152 9ms 22 Sep 2025 726th brochmann 🇸🇪 425 152 10ms 12 Oct 2025 730th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 731st denisfouchard 422 153 11ms 21 Aug 2025 732nd osNiko 🇧🇷 419 154 22ms 21 Aug 2025 733rd FortuiteMan 🇫🇷 417 155 16ms 16 Oct 2024 733rd celiendonze 🇨🇭 417 155 11ms 17 Oct 2025 735th Arkadios200 417 196 95ms 21 Oct 2025 736th Shotokhan 414 156 9ms 21 Sep 2025 737th lhulinsky 411 157 10ms 21 Oct 2024 738th TheZwierzLF 🇵🇱 410 140 507ms 10 hours ago 739th ThatAlo 409 158 10ms 9 Dec 2024 740th webmiche 406 159 10ms 19 days ago 741st dieggsy 406 247 21ms 10 Oct 2024 742nd Mabeloid 🇳🇴 405 159 10ms 12 Oct 2024 743rd CheeseCake628 🇳🇴 404 160 99ms 5 Nov 2024 744th snoozingnewt 🇺🇸 404 223 83ms 20 days ago 745th pres-abhisheksinha 401 161 9ms 8 Oct 2024 746th ibixina 399 162 10ms 13 Oct 2024 746th TheAtrossian 399 162 10ms 5 Jan 2025 748th Ralac07 🇦🇺 397 162 10ms 3 Oct 2024 749th Maximizer02 396 201 11ms 1 Oct 2024 750th Vaekor 391 165 9ms 15 Dec 2024 First Prev 676–750 of 820 Next Last