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 751st snoozingnewt 🇺🇸 372 313 45ms 6 days ago 752nd RobGLambert 370 232 975ms 8 Jun 2025 753rd RedzGoose 🇦🇺 369 187 116ms 2 Oct 2024 754th P1nk-P0nk 368 215 3ms 18 Oct 2024 755th clayboll99 367 176 14ms 10 Jul 2025 756th Upload-and-View 🇺🇦 365 177 19ms 9 Aug 2025 757th OSYCh314 🇦🇺 363 178 10ms 2 Nov 2024 758th calum12345 359 180 11ms 26 Mar 2025 759th sciencejiho 356 197 2ms 11 Feb 2025 760th zt14427 355 182 11ms 27 Dec 2024 761st The-Wolfson 354 230 103ms 16 Dec 2024 762nd IoLimmer 353 183 16ms 10 Oct 2024 763rd aksyristos 351 184 17ms 15 Nov 2024 764th estomagordo 🇳🇱 347 186 10ms 15 Jul 2025 765th RobGLambert 341 273 192ms 8 Jun 2025 766th Ernest1338 339 275 266ms 26 Oct 2024 767th noahhorlacher 337 191 10ms 7 Dec 2024 768th snoozingnewt 🇺🇸 301 200 4ms 6 days ago 769th gautambp 296 218 11ms 24 Jun 2025 770th KatieLG 🇬🇧 296 290 1,770ms 1 Oct 2025 771st KatieLG 🇬🇧 291 241 2ms 1 Oct 2025 772nd Zhenyu-Bo 283 228 11ms 30 Jul 2025 773rd EthanJantz 281 230 11ms 5 Sep 2025 774th ReterikHub 277 310 205ms 17 Jan 2025 775th Mikey-Beep 🇬🇧 273 349 25ms 12 Aug 2025 776th RobertBurs 272 237 10ms 22 Sep 2025 777th MeWhenI 🇻🇦 271 407 132ms 6 Oct 2024 778th TJK-S 268 241 10ms 15 days ago 779th te-chnical 250 258 202ms 4 May 2025 780th arebbsba 218 296 11ms 9 Jan 2025 781st Msleizak 🇫🇷 206 226 269ms 19 May 2025 782nd AidanWalter 120 540 11ms 1 Jan 2025 783rd vkptimon 120 776 307ms 9 Jul 2025 784th bignamehyp 97 667 12ms 14 Nov 2024 785th dokutan 60 2,474 158ms 18 Aug 2025 786th iczelia 🇩🇪 52 2,045 4ms 26 days ago 787th lyphyser 0 15 80ms 25 May 2025 788th 2bular 0 16 76ms 22 Mar 2025 789th darrenks 0 17 78ms 22 Mar 2025 790th Natanaelel 🇸🇪 0 18 74ms 23 Mar 2025 790th lyxal 🇦🇺 0 18 498ms 17 May 2025 790th themoonisacheese 0 18 484ms 13 Jun 2025 790th namelessiw 0 18 411ms 27 days ago 794th kg583 🇺🇸 0 20 286ms 14 May 2025 795th plcc0 0 21 99ms 4 Apr 2025 796th ovs-code 🇩🇪 0 37 3ms 13 Jul 2025 797th maweowo 🇩🇪 0 39 5ms 2 Oct 2025 798th ovs-code 🇩🇪 0 40 4ms 9 Jul 2025 799th AlephSquirrel 0 43 4ms 15 Jun 2025 800th evnu 0 44 4ms 27 days ago 801st ovs-code 🇩🇪 0 51 16ms 13 Jun 2025 802nd GrayJoKing 🇦🇺 0 55 3ms 13 Jul 2025 803rd chunes3 🇺🇸 0 65 41ms 13 Feb 2025 803rd DialFrost 🇸🇬 0 65 79ms 13 Feb 2025 805th sean-niemann 🇺🇸 0 68 75ms 30 Apr 2025 806th dokutan 0 89 65ms 28 Jun 2025 807th MatthewF19 0 108 119ms 17 May 2025 808th albanian-laundromat 0 123 2ms 4 Jun 2025 809th edsrzf 🇳🇿 0 142 216ms 24 Jul 2025 First Prev 751–809 of 809