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 chartung17 529 122 10ms 24 Mar 2025 602nd msbranicky 527 126 3,001ms 9 Jan 2025 603rd msbranicky 525 123 17ms 3 Oct 2024 603rd bobbysq 525 123 11ms 5 Oct 2024 603rd wuzekai518 525 123 11ms 8 Oct 2024 603rd vhoulbreque 🇫🇷 525 123 14ms 4 Feb 2025 607th galloj 🇨🇿 522 112 27ms 4 Oct 2024 608th Macweese 522 178 308ms 3 Aug 2025 609th NotEvenIndian 521 124 11ms 22 Oct 2024 609th ridingqwerty 🇺🇸 521 124 17ms 16 Jan 2025 609th CommandLeo 🇮🇹 521 124 11ms 5 Oct 2025 612th snoozingnewt 🇺🇸 519 213 119ms 5 days ago 613th bnic24 516 125 23ms 3 Oct 2024 613th adoxography 516 125 12ms 22 Oct 2024 613th lelbal 516 125 10ms 25 days ago 616th bac0id 516 180 306ms 9 Jan 2025 617th sidok 515 109 276ms 13 Nov 2024 618th dokutan 512 143 128ms 19 Oct 2024 619th emgordon154 511 156 10ms 13 Dec 2024 620th nephila-nacrea 🇬🇧 510 77 4ms 2 Oct 2024 621st KatieLG 🇬🇧 509 140 380ms 1 Oct 2024 622nd KatieLG 🇬🇧 509 146 11ms 2 Oct 2024 623rd CatsAreFluffy 508 127 18ms 30 Oct 2024 623rd WillowWispy 508 127 11ms 25 May 2025 625th Chinay-Domitrix 🇺🇸 507 131 3,429ms 30 Mar 2025 626th msbranicky 507 138 4ms 3 Oct 2024 627th yoshykai 507 183 309ms 12 Apr 2025 628th Lv0Sys 🇵🇱 504 128 19ms 15 Jun 2025 629th snoozingnewt 🇺🇸 501 142 409ms 5 days ago 630th madex 🇩🇪 500 129 18ms 2 Oct 2024 630th RedzGoose 🇦🇺 500 129 11ms 15 Oct 2024 630th calebaitken 500 129 10ms 11 Apr 2025 633rd MeWhenI 🇻🇦 499 149 44ms 4 Oct 2024 634th janAkali 🇷🇺 499 167 335ms 8 Oct 2024 635th jlangvand 498 141 1ms 15 Oct 2024 635th HumanoidCPU 498 141 2ms 7 Mar 2025 637th Europe2048 497 130 11ms 2 Oct 2024 637th nstearns96 🇬🇧 497 130 16ms 2 Oct 2024 637th rollershutter 497 130 11ms 10 Jan 2025 637th Stockoh 🇫🇷 497 130 18ms 4 Jul 2025 641st inverseLorentz 🇦🇺 493 131 11ms 7 Oct 2024 641st sciencejiho 493 131 19ms 11 Feb 2025 641st Jaydosu 493 131 10ms 11 Apr 2025 644th TheRealOhead 🇺🇸 491 131 10ms 1 Oct 2024 645th HumanoidCPU 491 145 427ms 5 Oct 2024 646th snoozingnewt 🇺🇸 488 150 135ms 5 days ago 647th snoozingnewt 🇺🇸 486 117 1,024ms 5 days ago 648th Mabeloid 🇳🇴 485 133 11ms 2 Oct 2024 648th Emutis 🇱🇹 485 133 11ms 4 Feb 2025 650th h-hh-hhh 🇺🇦 485 177 60ms 2 Nov 2024 651st snoozingnewt 🇺🇸 484 168 105ms 5 days ago 652nd snoozingnewt 🇺🇸 483 249 27ms 5 days ago 653rd snoozingnewt 🇺🇸 482 173 353ms 5 days ago 654th alphafalfa 480 92 2ms 8 Nov 2024 655th KatieLG 🇬🇧 478 120 585ms 1 Oct 2024 656th h-hh-hhh 🇺🇦 477 147 2ms 2 Nov 2024 657th mitzal 477 180 61ms 9 Feb 2025 658th ravnskjaer 🇩🇰 476 195 306ms 20 Dec 2024 658th snoozingnewt 🇺🇸 476 195 370ms 5 days ago 660th sciencedjinn 475 136 10ms 8 Nov 2024 660th ihatethefrench 475 136 18ms 4 Jan 2025 662nd MiffOttah 475 150 402ms 6 Oct 2024 663rd kurkale6ka 471 137 22ms 16 Oct 2024 663rd 4ndyJ 🇬🇧 471 137 11ms 14 Nov 2024 663rd Mikey-Beep 🇬🇧 471 137 16ms 6 Aug 2025 663rd wobblybits 471 137 21ms 17 Aug 2025 667th iczelia 🇩🇪 470 94 3ms 23 Sep 2025 668th luca1339 469 198 302ms 4 Nov 2024 669th ejini6969 468 102 35ms 14 Jun 2025 670th snoozingnewt 🇺🇸 465 200 219ms 5 days ago 671st scpchicken 🇵🇼 464 139 20ms 6 Oct 2024 672nd NanduBC 461 140 10ms 1 Oct 2024 672nd jmerle 🇳🇱 461 140 11ms 10 Jan 2025 672nd RobertHoeh 461 140 10ms 3 Mar 2025 672nd smilesformiles3 461 140 23ms 12 Jun 2025 First Prev 601–675 of 808 Next Last