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 msbranicky 532 175 152ms 13 Dec 2024 602nd chartung17 529 122 10ms 24 Mar 2025 603rd msbranicky 527 126 3,001ms 9 Jan 2025 604th msbranicky 525 123 17ms 3 Oct 2024 604th bobbysq 525 123 11ms 5 Oct 2024 604th wuzekai518 525 123 11ms 8 Oct 2024 604th vhoulbreque 🇫🇷 525 123 14ms 4 Feb 2025 608th galloj 🇨🇿 522 112 27ms 4 Oct 2024 609th Macweese 522 178 308ms 3 Aug 2025 610th NotEvenIndian 521 124 11ms 22 Oct 2024 610th ridingqwerty 🇺🇸 521 124 17ms 16 Jan 2025 610th CommandLeo 🇮🇹 521 124 11ms 5 Oct 2025 613th snoozingnewt 🇺🇸 519 213 119ms 6 days ago 614th bnic24 516 125 23ms 3 Oct 2024 614th adoxography 516 125 12ms 22 Oct 2024 614th lelbal 516 125 10ms 25 days ago 617th bac0id 516 180 306ms 9 Jan 2025 618th sidok 515 109 276ms 13 Nov 2024 619th dokutan 512 143 128ms 19 Oct 2024 620th emgordon154 511 156 10ms 13 Dec 2024 621st nephila-nacrea 🇬🇧 510 77 4ms 2 Oct 2024 622nd KatieLG 🇬🇧 509 140 380ms 1 Oct 2024 623rd KatieLG 🇬🇧 509 146 11ms 2 Oct 2024 624th CatsAreFluffy 508 127 18ms 30 Oct 2024 624th WillowWispy 508 127 11ms 25 May 2025 626th Chinay-Domitrix 🇺🇸 507 131 3,429ms 30 Mar 2025 627th msbranicky 507 138 4ms 3 Oct 2024 628th yoshykai 507 183 309ms 12 Apr 2025 629th Lv0Sys 🇵🇱 504 128 19ms 15 Jun 2025 630th snoozingnewt 🇺🇸 501 142 409ms 6 days ago 631st madex 🇩🇪 500 129 18ms 2 Oct 2024 631st RedzGoose 🇦🇺 500 129 11ms 15 Oct 2024 631st calebaitken 500 129 10ms 11 Apr 2025 634th MeWhenI 🇻🇦 499 149 44ms 4 Oct 2024 635th janAkali 🇷🇺 499 167 335ms 8 Oct 2024 636th jlangvand 498 141 1ms 15 Oct 2024 636th HumanoidCPU 498 141 2ms 7 Mar 2025 638th Europe2048 497 130 11ms 2 Oct 2024 638th nstearns96 🇬🇧 497 130 16ms 2 Oct 2024 638th rollershutter 497 130 11ms 10 Jan 2025 638th Stockoh 🇫🇷 497 130 18ms 4 Jul 2025 642nd inverseLorentz 🇦🇺 493 131 11ms 7 Oct 2024 642nd sciencejiho 493 131 19ms 11 Feb 2025 642nd Jaydosu 493 131 10ms 11 Apr 2025 645th TheRealOhead 🇺🇸 491 131 10ms 1 Oct 2024 646th HumanoidCPU 491 145 427ms 5 Oct 2024 647th snoozingnewt 🇺🇸 488 150 135ms 6 days ago 648th snoozingnewt 🇺🇸 486 117 1,024ms 6 days ago 649th Mabeloid 🇳🇴 485 133 11ms 2 Oct 2024 649th Emutis 🇱🇹 485 133 11ms 4 Feb 2025 651st h-hh-hhh 🇺🇦 485 177 60ms 2 Nov 2024 652nd snoozingnewt 🇺🇸 484 168 105ms 6 days ago 653rd snoozingnewt 🇺🇸 483 249 27ms 6 days ago 654th snoozingnewt 🇺🇸 482 173 353ms 6 days ago 655th alphafalfa 480 92 2ms 8 Nov 2024 656th KatieLG 🇬🇧 478 120 585ms 1 Oct 2024 657th h-hh-hhh 🇺🇦 477 147 2ms 2 Nov 2024 658th mitzal 477 180 61ms 9 Feb 2025 659th ravnskjaer 🇩🇰 476 195 306ms 20 Dec 2024 659th snoozingnewt 🇺🇸 476 195 370ms 6 days ago 661st sciencedjinn 475 136 10ms 8 Nov 2024 661st ihatethefrench 475 136 18ms 4 Jan 2025 663rd MiffOttah 475 150 402ms 6 Oct 2024 664th kurkale6ka 471 137 22ms 16 Oct 2024 664th 4ndyJ 🇬🇧 471 137 11ms 14 Nov 2024 664th Mikey-Beep 🇬🇧 471 137 16ms 6 Aug 2025 664th wobblybits 471 137 21ms 17 Aug 2025 668th iczelia 🇩🇪 470 94 3ms 23 Sep 2025 669th luca1339 469 198 302ms 4 Nov 2024 670th ejini6969 468 102 35ms 14 Jun 2025 671st snoozingnewt 🇺🇸 465 200 219ms 6 days ago 672nd scpchicken 🇵🇼 464 139 20ms 6 Oct 2024 673rd NanduBC 461 140 10ms 1 Oct 2024 673rd jmerle 🇳🇱 461 140 11ms 10 Jan 2025 673rd RobertHoeh 461 140 10ms 3 Mar 2025 First Prev 601–675 of 809 Next Last