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 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 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 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 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 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 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 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 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 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 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 676th snoozingnewt 🇺🇸 482 137 27 Jan 2025 677th Vaekor 482 165 15 Dec 2024 678th alphafalfa 477 92 8 Nov 2024 679th KatieLG 🇬🇧 476 108 13 Oct 2024 680th h-hh-hhh 🇺🇦 476 147 2 Nov 2024 681st mitzal 476 180 9 Feb 2025 682nd MiffOttah 473 150 6 Oct 2024 683rd JesseNoEyes 🇺🇸 471 169 1 Oct 2024 684th Maximizer02 471 201 1 Oct 2024 685th ejini6969 468 102 14 Jun 2025 686th zyc-2024 🇨🇳 468 170 5 Oct 2024 687th ComputerKWasTaken 🇺🇸 465 171 14 Oct 2024 688th Yewzir 🇧🇪 460 171 26 Dec 2024 689th madex 🇩🇪 459 104 2 Oct 2024 690th clayboll99 452 176 10 Jul 2025 691st dokutan 451 63 26 Nov 2024 692nd IISResetMe 449 104 27 Mar 2025 693rd Upload-and-View 🇺🇦 449 177 9 Aug 2025 694th varhammer 🇷🇺 448 223 23 Feb 2025 695th OSYCh314 🇦🇺 447 178 2 Nov 2024 696th dokutan 445 109 19 Oct 2024 697th grey0ut 444 105 11 Jan 2025 698th calum12345 442 180 26 Mar 2025 699th MyXoToD 🇩🇪 440 146 26 May 2025 700th zt14427 437 182 27 Dec 2024 701st IoLimmer 435 183 10 Oct 2024 702nd aksyristos 432 184 15 Nov 2024 703rd estomagordo 🇳🇱 428 186 15 Jul 2025 704th dokutan 424 132 3 Oct 2024 705th MeWhenI 🇻🇦 417 143 2 Oct 2024 706th CheeseCake628 🇳🇴 413 160 19 May 2025 707th dieggsy 405 247 10 Oct 2024 708th Mabeloid 🇳🇴 404 159 12 Oct 2024 709th Ralac07 🇦🇺 397 162 3 Oct 2024 710th snoozingnewt 🇺🇸 383 176 2 Oct 2024 710th fischfood 383 176 22 Oct 2024 712th c0d3-4-F00d 🇩🇪 380 184 9 Jan 2025 713th ehulinsky 🇺🇸 378 158 2 Apr 2025 714th RedzGoose 🇦🇺 369 187 2 Oct 2024 715th RobGLambert 369 232 8 Jun 2025 716th P1nk-P0nk 367 215 18 Oct 2024 717th gautambp 365 218 24 Jun 2025 718th Arkadios200 360 225 2 days ago 719th sciencejiho 355 197 11 Feb 2025 720th The-Wolfson 352 230 16 Dec 2024 721st Zhenyu-Bo 349 228 30 Jul 2025 722nd EthanJantz 346 230 2 days ago 723rd RobGLambert 340 273 8 Jun 2025 724th Ernest1338 338 275 26 Oct 2024 725th noahhorlacher 337 191 7 Dec 2024 726th te-chnical 308 258 4 May 2025 727th ReterikHub 276 310 17 Jan 2025 728th Mikey-Beep 🇬🇧 273 349 26 days ago 729th MeWhenI 🇻🇦 270 407 6 Oct 2024 730th arebbsba 269 296 9 Jan 2025 731st Msleizak 🇫🇷 206 226 19 May 2025 732nd vkptimon 150 776 9 Jul 2025 733rd AidanWalter 147 540 1 Jan 2025 734th bignamehyp 119 667 14 Nov 2024 735th dokutan 60 2,475 19 days ago 736th lyphyser 0 15 25 May 2025 737th 2bular 0 16 22 Mar 2025 738th darrenks 0 17 22 Mar 2025 739th Natanaelel 🇸🇪 0 18 23 Mar 2025 740th plcc0 0 21 4 Apr 2025 741st kg583 🇺🇸 0 25 8 Feb 2025 742nd lyxal 🇦🇺 0 27 17 May 2025 743rd themoonisacheese 0 35 13 Jun 2025 744th ovs-code 🇩🇪 0 54 9 Jul 2025 745th GrayJoKing 🇦🇺 0 55 13 Jul 2025 746th ovs-code 🇩🇪 0 58 13 Jul 2025 747th AlephSquirrel 0 63 15 Jun 2025 748th DialFrost 🇸🇬 0 67 13 Feb 2025 749th chunes3 🇺🇸 0 69 13 Feb 2025 750th ovs-code 🇩🇪 0 76 13 Jun 2025 Prev 676–750 of 755 Next