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 🇬🇧 509 146 2 Oct 2024 602nd Chinay-Domitrix 🇺🇸 507 131 30 Mar 2025 603rd KatieLG 🇬🇧 506 140 1 Oct 2024 604th msbranicky 505 138 3 Oct 2024 605th lhulinsky 505 157 21 Oct 2024 606th ThatAlo 502 158 9 Dec 2024 607th MeWhenI 🇻🇦 499 149 4 Oct 2024 608th jlangvand 496 141 15 Oct 2024 608th HumanoidCPU 496 141 7 Mar 2025 610th CheeseCake628 🇳🇴 496 160 5 Nov 2024 611th Mabeloid 🇳🇴 495 133 2 Oct 2024 612th pres-abhisheksinha 493 161 8 Oct 2024 613th ibixina 490 162 13 Oct 2024 613th TheAtrossian 490 162 5 Jan 2025 615th TheRealOhead 🇺🇸 489 131 1 Oct 2024 616th HumanoidCPU 488 145 5 Oct 2024 617th JunkIce 484 136 3 Dec 2024 618th h-hh-hhh 🇺🇦 484 177 2 Nov 2024 619th Mabeloid 🇳🇴 482 145 2 Oct 2024 620th Vaekor 481 165 15 Dec 2024 621st snoozingnewt 🇺🇸 480 137 27 Jan 2025 622nd alphafalfa 476 92 8 Nov 2024 623rd KatieLG 🇬🇧 476 108 13 Oct 2024 624th h-hh-hhh 🇺🇦 476 147 2 Nov 2024 625th mitzal 476 180 9 Feb 2025 626th MiffOttah 472 150 6 Oct 2024 627th Maximizer02 472 201 1 Oct 2024 628th JesseNoEyes 🇺🇸 470 169 1 Oct 2024 629th ejini6969 467 102 40 hours ago 630th zyc-2024 🇨🇳 467 170 5 Oct 2024 631st ComputerKWasTaken 🇺🇸 464 171 14 Oct 2024 632nd varhammer 🇷🇺 463 223 23 Feb 2025 633rd Yewzir 🇧🇪 460 171 26 Dec 2024 634th madex 🇩🇪 458 104 2 Oct 2024 635th dokutan 451 63 26 Nov 2024 636th IISResetMe 447 104 27 Mar 2025 637th OSYCh314 🇦🇺 446 178 2 Nov 2024 638th dokutan 445 109 19 Oct 2024 639th grey0ut 443 105 11 Jan 2025 640th calum12345 441 180 26 Mar 2025 641st MyXoToD 🇩🇪 439 146 20 days ago 642nd zt14427 436 182 27 Dec 2024 643rd IoLimmer 434 183 10 Oct 2024 644th aksyristos 431 184 15 Nov 2024 645th dokutan 424 132 3 Oct 2024 646th dieggsy 418 247 10 Oct 2024 647th MeWhenI 🇻🇦 417 143 2 Oct 2024 648th CheeseCake628 🇳🇴 411 160 27 days ago 649th Mabeloid 🇳🇴 403 159 12 Oct 2024 650th Ralac07 🇦🇺 396 162 3 Oct 2024 651st snoozingnewt 🇺🇸 383 176 2 Oct 2024 651st fischfood 383 176 22 Oct 2024 653rd c0d3-4-F00d 🇩🇪 380 184 9 Jan 2025 654th ehulinsky 🇺🇸 378 158 2 Apr 2025 655th RedzGoose 🇦🇺 369 187 2 Oct 2024 656th RobGLambert 369 232 7 days ago 657th P1nk-P0nk 367 215 18 Oct 2024 658th sciencejiho 355 197 11 Feb 2025 659th The-Wolfson 348 230 16 Dec 2024 660th RobGLambert 340 273 7 days ago 661st Ernest1338 338 275 26 Oct 2024 662nd noahhorlacher 336 191 7 Dec 2024 663rd te-chnical 308 258 4 May 2025 664th ReterikHub 276 310 17 Jan 2025 665th MeWhenI 🇻🇦 270 407 6 Oct 2024 666th arebbsba 268 296 9 Jan 2025 667th mossiegoat 245 324 3 days ago 668th Msleizak 🇫🇷 206 226 27 days ago 669th AidanWalter 147 540 1 Jan 2025 670th bignamehyp 119 667 14 Nov 2024 671st lyphyser 0 15 21 days ago 672nd 2bular 0 16 22 Mar 2025 673rd darrenks 0 17 22 Mar 2025 674th Natanaelel 🇸🇪 0 18 23 Mar 2025 675th plcc0 0 21 4 Apr 2025 Prev 601–675 of 686 Next