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 Trinomial Triangle 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 Smooth Numbers Snake Sphenic Numbers 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 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 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 Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time 675th TheAtrossian 491 162 5 Jan 2025 677th HumanoidCPU 489 145 5 Oct 2024 678th JunkIce 486 136 3 Dec 2024 679th h-hh-hhh 🇺🇦 485 177 2 Nov 2024 680th Mabeloid 🇳🇴 484 145 2 Oct 2024 681st Vaekor 482 165 15 Dec 2024 682nd alphafalfa 479 92 8 Nov 2024 683rd h-hh-hhh 🇺🇦 477 147 2 Nov 2024 684th mitzal 477 180 9 Feb 2025 685th ravnskjaer 🇩🇰 475 195 20 Dec 2024 686th MiffOttah 473 150 6 Oct 2024 687th JesseNoEyes 🇺🇸 471 169 1 Oct 2024 688th Maximizer02 471 201 1 Oct 2024 689th iczelia 🇩🇪 469 94 12 days ago 690th ejini6969 468 102 14 Jun 2025 691st zyc-2024 🇨🇳 468 170 5 Oct 2024 692nd luca1339 467 198 4 Nov 2024 693rd ComputerKWasTaken 🇺🇸 465 171 14 Oct 2024 694th Yewzir 🇧🇪 460 171 26 Dec 2024 695th navier-1 460 173 14 days ago 696th madex 🇩🇪 459 104 2 Oct 2024 697th Jacob385 458 202 2 Oct 2024 698th clayboll99 452 176 10 Jul 2025 699th dokutan 451 63 26 Nov 2024 700th Upload-and-View 🇺🇦 450 177 9 Aug 2025 701st IISResetMe 449 104 27 Mar 2025 702nd varhammer 🇷🇺 448 223 23 Feb 2025 703rd OSYCh314 🇦🇺 447 178 2 Nov 2024 704th dokutan 445 109 19 Oct 2024 705th grey0ut 444 105 11 Jan 2025 706th calum12345 442 180 26 Mar 2025 707th MyXoToD 🇩🇪 440 146 26 May 2025 708th zt14427 437 182 27 Dec 2024 709th IoLimmer 435 183 10 Oct 2024 710th aksyristos 433 184 15 Nov 2024 711th KatieLG 🇬🇧 432 183 3 days ago 712th KatieLG 🇬🇧 431 108 13 Oct 2024 713th estomagordo 🇳🇱 428 186 15 Jul 2025 714th dokutan 424 132 3 Oct 2024 715th MeWhenI 🇻🇦 417 143 2 Oct 2024 716th CheeseCake628 🇳🇴 413 160 19 May 2025 717th dieggsy 405 247 10 Oct 2024 718th Mabeloid 🇳🇴 404 159 12 Oct 2024 719th Ralac07 🇦🇺 397 162 3 Oct 2024 720th Arkadios200 397 204 15 days ago 721st snoozingnewt 🇺🇸 383 176 2 Oct 2024 721st fischfood 383 176 22 Oct 2024 723rd c0d3-4-F00d 🇩🇪 381 184 9 Jan 2025 724th ehulinsky 🇺🇸 378 158 2 Apr 2025 725th RobGLambert 370 232 8 Jun 2025 726th RedzGoose 🇦🇺 369 187 2 Oct 2024 727th P1nk-P0nk 367 215 18 Oct 2024 728th gautambp 365 218 24 Jun 2025 729th sciencejiho 356 197 11 Feb 2025 730th The-Wolfson 352 230 16 Dec 2024 731st Zhenyu-Bo 349 228 30 Jul 2025 732nd EthanJantz 346 230 5 Sep 2025 733rd RobGLambert 340 273 8 Jun 2025 734th Ernest1338 338 275 26 Oct 2024 735th noahhorlacher 337 191 7 Dec 2024 736th RobertBurs 336 237 14 days ago 737th TJK-S 313 254 15 hours ago 738th te-chnical 308 258 4 May 2025 739th KatieLG 🇬🇧 296 290 5 days ago 740th KatieLG 🇬🇧 291 241 5 days ago 741st ReterikHub 277 310 17 Jan 2025 742nd Mikey-Beep 🇬🇧 273 349 12 Aug 2025 743rd MeWhenI 🇻🇦 270 407 6 Oct 2024 744th arebbsba 269 296 9 Jan 2025 745th Msleizak 🇫🇷 206 226 19 May 2025 746th AidanWalter 147 540 1 Jan 2025 747th bignamehyp 119 667 14 Nov 2024 748th vkptimon 119 776 9 Jul 2025 749th dokutan 60 2,475 18 Aug 2025 750th lyphyser 0 15 25 May 2025 First Prev 676–750 of 770 Next Last