Card Number Validation in all languages in bytes. 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 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 Maze Medal Tally 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant 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 Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Maze Medal Tally 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant 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 Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 601st KatieLG 🇬🇧 506 140 1 Oct 2024 602nd msbranicky 505 138 3 Oct 2024 603rd lhulinsky 505 157 21 Oct 2024 604th ThatAlo 502 158 9 Dec 2024 605th MeWhenI 🇻🇦 499 149 4 Oct 2024 606th jlangvand 496 141 15 Oct 2024 606th HumanoidCPU 496 141 7 Mar 2025 608th CheeseCake628 🇳🇴 496 160 5 Nov 2024 609th Mabeloid 🇳🇴 495 133 2 Oct 2024 610th pres-abhisheksinha 493 161 8 Oct 2024 611th ibixina 490 162 13 Oct 2024 611th TheAtrossian 490 162 5 Jan 2025 613th TheRealOhead 🇺🇸 489 131 1 Oct 2024 614th HumanoidCPU 488 145 5 Oct 2024 615th JunkIce 484 136 3 Dec 2024 616th h-hh-hhh 🇺🇦 484 177 2 Nov 2024 617th Mabeloid 🇳🇴 482 145 2 Oct 2024 618th Vaekor 481 165 15 Dec 2024 619th snoozingnewt 🇺🇸 480 137 27 Jan 2025 620th alphafalfa 476 92 8 Nov 2024 621st KatieLG 🇬🇧 476 108 13 Oct 2024 622nd h-hh-hhh 🇺🇦 476 147 2 Nov 2024 623rd mitzal 476 180 9 Feb 2025 624th MiffOttah 472 150 6 Oct 2024 625th Maximizer02 472 201 1 Oct 2024 626th JesseNoEyes 🇺🇸 470 169 1 Oct 2024 627th ejini6969 467 102 32 hours ago 628th zyc-2024 🇨🇳 467 170 5 Oct 2024 629th ComputerKWasTaken 🇺🇸 464 171 14 Oct 2024 630th varhammer 🇷🇺 463 223 23 Feb 2025 631st Yewzir 🇧🇪 460 171 26 Dec 2024 632nd madex 🇩🇪 458 104 2 Oct 2024 633rd dokutan 451 63 26 Nov 2024 634th IISResetMe 447 104 27 Mar 2025 635th OSYCh314 🇦🇺 446 178 2 Nov 2024 636th dokutan 445 109 19 Oct 2024 637th grey0ut 443 105 11 Jan 2025 638th calum12345 441 180 26 Mar 2025 639th MyXoToD 🇩🇪 439 146 20 days ago 640th zt14427 436 182 27 Dec 2024 641st IoLimmer 434 183 10 Oct 2024 642nd aksyristos 431 184 15 Nov 2024 643rd dokutan 424 132 3 Oct 2024 644th dieggsy 418 247 10 Oct 2024 645th MeWhenI 🇻🇦 417 143 2 Oct 2024 646th CheeseCake628 🇳🇴 411 160 26 days ago 647th Mabeloid 🇳🇴 403 159 12 Oct 2024 648th Ralac07 🇦🇺 395 162 3 Oct 2024 649th snoozingnewt 🇺🇸 383 176 2 Oct 2024 649th fischfood 383 176 22 Oct 2024 651st c0d3-4-F00d 🇩🇪 380 184 9 Jan 2025 652nd ehulinsky 🇺🇸 378 158 2 Apr 2025 653rd RedzGoose 🇦🇺 369 187 2 Oct 2024 654th RobGLambert 369 232 7 days ago 655th P1nk-P0nk 367 215 18 Oct 2024 656th sciencejiho 355 197 11 Feb 2025 657th The-Wolfson 348 230 16 Dec 2024 658th RobGLambert 340 273 7 days ago 659th Ernest1338 338 275 26 Oct 2024 660th noahhorlacher 335 191 7 Dec 2024 661st te-chnical 308 258 4 May 2025 662nd ReterikHub 276 310 17 Jan 2025 663rd MeWhenI 🇻🇦 270 407 6 Oct 2024 664th arebbsba 268 296 9 Jan 2025 665th mossiegoat 245 324 3 days ago 666th Msleizak 🇫🇷 206 226 27 days ago 667th AidanWalter 147 540 1 Jan 2025 668th bignamehyp 119 667 14 Nov 2024 669th lyphyser 0 15 20 days ago 670th 2bular 0 16 22 Mar 2025 671st darrenks 0 17 22 Mar 2025 672nd Natanaelel 🇸🇪 0 18 23 Mar 2025 673rd plcc0 0 21 4 Apr 2025 674th kg583 🇺🇸 0 25 8 Feb 2025 675th lyxal 🇦🇺 0 27 17 May 2025 Prev 601–675 of 683 Next