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 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 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 601st BREMAUCY 🇫🇷 534 121 20ms 18 Jul 2025 602nd deancureton 532 121 10ms 30 Dec 2024 603rd msbranicky 532 175 162ms 13 Dec 2024 604th chartung17 529 122 10ms 24 Mar 2025 605th msbranicky 527 126 2,985ms 9 Jan 2025 606th msbranicky 525 123 17ms 3 Oct 2024 606th bobbysq 525 123 11ms 5 Oct 2024 606th wuzekai518 525 123 11ms 8 Oct 2024 606th vhoulbreque 🇫🇷 525 123 14ms 4 Feb 2025 610th galloj 🇨🇿 522 112 27ms 4 Oct 2024 611th Macweese 522 178 308ms 3 Aug 2025 612th NotEvenIndian 521 124 11ms 22 Oct 2024 612th ridingqwerty 🇺🇸 521 124 17ms 16 Jan 2025 612th CommandLeo 🇮🇹 521 124 11ms 5 Oct 2025 615th snoozingnewt 🇺🇸 519 213 119ms 9 days ago 616th bnic24 516 125 23ms 3 Oct 2024 616th adoxography 516 125 12ms 22 Oct 2024 616th lelbal 516 125 10ms 14 Oct 2025 619th bac0id 516 180 306ms 9 Jan 2025 620th sidok 515 109 276ms 13 Nov 2024 621st dokutan 512 143 128ms 19 Oct 2024 622nd emgordon154 511 156 10ms 13 Dec 2024 623rd nephila-nacrea 🇬🇧 510 77 4ms 2 Oct 2024 624th KatieLG 🇬🇧 509 140 380ms 1 Oct 2024 625th KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 626th CatsAreFluffy 508 127 18ms 30 Oct 2024 626th WillowWispy 508 127 11ms 25 May 2025 628th Chinay-Domitrix 🇺🇸 507 131 3,429ms 30 Mar 2025 629th msbranicky 507 138 4ms 3 Oct 2024 630th yoshykai 507 183 309ms 12 Apr 2025 631st Lv0Sys 🇵🇱 504 128 19ms 15 Jun 2025 632nd snoozingnewt 🇺🇸 501 142 396ms 9 days ago 633rd madex 🇩🇪 500 129 18ms 2 Oct 2024 633rd RedzGoose 🇦🇺 500 129 11ms 15 Oct 2024 633rd calebaitken 500 129 10ms 11 Apr 2025 636th MeWhenI 🇻🇦 499 149 43ms 4 Oct 2024 637th janAkali 🇷🇺 499 167 335ms 8 Oct 2024 638th jlangvand 498 141 1ms 15 Oct 2024 638th HumanoidCPU 498 141 2ms 7 Mar 2025 640th Europe2048 497 130 11ms 2 Oct 2024 640th nstearns96 🇬🇧 497 130 16ms 2 Oct 2024 640th rollershutter 497 130 11ms 10 Jan 2025 640th Stockoh 🇫🇷 497 130 18ms 4 Jul 2025 644th inverseLorentz 🇦🇺 493 131 11ms 7 Oct 2024 644th sciencejiho 493 131 19ms 11 Feb 2025 644th Jaydosu 493 131 10ms 11 Apr 2025 644th Emutis 🇱🇹 493 131 11ms 3 hours ago 648th TheRealOhead 🇺🇸 491 131 13ms 1 Oct 2024 649th HumanoidCPU 491 145 427ms 5 Oct 2024 650th snoozingnewt 🇺🇸 488 150 135ms 9 days ago 651st snoozingnewt 🇺🇸 486 117 1,024ms 9 days ago 652nd Mabeloid 🇳🇴 485 133 11ms 2 Oct 2024 653rd h-hh-hhh 🇺🇦 485 177 60ms 2 Nov 2024 654th snoozingnewt 🇺🇸 484 168 105ms 9 days ago 655th snoozingnewt 🇺🇸 483 249 27ms 9 days ago 656th snoozingnewt 🇺🇸 482 173 353ms 9 days ago 657th alphafalfa 480 92 2ms 8 Nov 2024 658th KatieLG 🇬🇧 478 120 585ms 1 Oct 2024 659th h-hh-hhh 🇺🇦 477 147 2ms 2 Nov 2024 660th mitzal 477 180 58ms 9 Feb 2025 661st ravnskjaer 🇩🇰 476 195 306ms 20 Dec 2024 661st snoozingnewt 🇺🇸 476 195 370ms 9 days ago 663rd sciencedjinn 475 136 10ms 8 Nov 2024 663rd ihatethefrench 475 136 18ms 4 Jan 2025 665th MiffOttah 475 150 402ms 6 Oct 2024 666th kurkale6ka 471 137 22ms 16 Oct 2024 666th 4ndyJ 🇬🇧 471 137 11ms 14 Nov 2024 666th Mikey-Beep 🇬🇧 471 137 16ms 6 Aug 2025 666th wobblybits 471 137 21ms 17 Aug 2025 670th iczelia 🇩🇪 470 94 3ms 23 Sep 2025 671st luca1339 469 198 302ms 4 Nov 2024 672nd ejini6969 468 102 35ms 14 Jun 2025 673rd snoozingnewt 🇺🇸 465 200 244ms 9 days ago 674th scpchicken 🇵🇼 464 139 20ms 6 Oct 2024 675th NanduBC 461 140 10ms 1 Oct 2024 First Prev 601–675 of 811 Next Last