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 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 Chars Time 676th psaban 433 149 31 Jul 2025 677th KatieLG 🇬🇧 432 183 4 days ago 678th KatieLG 🇬🇧 431 108 13 Oct 2024 679th dokutan 431 130 17 Oct 2024 680th Mabeloid 🇳🇴 431 133 2 Oct 2024 681st jameswmccarty 430 150 5 Oct 2024 681st yousefalizadeh 430 150 23 Oct 2024 681st feherd 430 150 31 Oct 2024 681st TheZwierzLF 🇵🇱 430 150 17 May 2025 685th adamnielson42 🇺🇸 425 152 6 Oct 2024 685th voidgloom 425 152 22 Oct 2024 685th omero-san 425 152 14 days ago 688th denisfouchard 422 153 21 Aug 2025 689th osNiko 🇧🇷 419 154 21 Aug 2025 690th MeWhenI 🇻🇦 417 143 2 Oct 2024 691st FortuiteMan 🇫🇷 416 155 16 Oct 2024 692nd Shotokhan 414 156 15 days ago 693rd lhulinsky 411 157 21 Oct 2024 694th ThatAlo 408 158 9 Dec 2024 695th dieggsy 405 247 10 Oct 2024 696th Mabeloid 🇳🇴 404 159 12 Oct 2024 697th CheeseCake628 🇳🇴 403 160 5 Nov 2024 698th pres-abhisheksinha 401 161 8 Oct 2024 699th ibixina 398 162 13 Oct 2024 699th TheAtrossian 398 162 5 Jan 2025 701st Ralac07 🇦🇺 397 162 3 Oct 2024 702nd Arkadios200 397 204 15 days ago 703rd Maximizer02 396 201 1 Oct 2024 704th Vaekor 391 165 15 Dec 2024 705th fischfood 383 176 22 Oct 2024 706th JesseNoEyes 🇺🇸 382 169 1 Oct 2024 707th c0d3-4-F00d 🇩🇪 381 184 9 Jan 2025 708th zyc-2024 🇨🇳 380 170 5 Oct 2024 709th ehulinsky 🇺🇸 378 158 2 Apr 2025 710th ComputerKWasTaken 🇺🇸 377 171 14 Oct 2024 711th navier-1 373 173 14 days ago 712th RobGLambert 370 232 8 Jun 2025 713th RedzGoose 🇦🇺 369 187 2 Oct 2024 714th clayboll99 367 176 10 Jul 2025 715th P1nk-P0nk 367 215 18 Oct 2024 716th snoozingnewt 🇺🇸 365 176 2 Oct 2024 717th Upload-and-View 🇺🇦 365 177 9 Aug 2025 718th OSYCh314 🇦🇺 363 178 2 Nov 2024 719th CheeseCake628 🇳🇴 358 160 19 May 2025 720th calum12345 358 180 26 Mar 2025 721st sciencejiho 356 197 11 Feb 2025 722nd zt14427 355 182 27 Dec 2024 723rd IoLimmer 353 183 10 Oct 2024 724th The-Wolfson 352 230 16 Dec 2024 725th aksyristos 351 184 15 Nov 2024 726th estomagordo 🇳🇱 347 186 15 Jul 2025 727th RobGLambert 340 273 8 Jun 2025 728th Ernest1338 338 275 26 Oct 2024 729th noahhorlacher 337 191 7 Dec 2024 730th gautambp 296 218 24 Jun 2025 731st KatieLG 🇬🇧 296 290 5 days ago 732nd KatieLG 🇬🇧 291 241 5 days ago 733rd Zhenyu-Bo 283 228 30 Jul 2025 734th EthanJantz 281 230 5 Sep 2025 735th ReterikHub 277 310 17 Jan 2025 736th Mikey-Beep 🇬🇧 273 349 12 Aug 2025 737th RobertBurs 272 237 14 days ago 738th MeWhenI 🇻🇦 270 407 6 Oct 2024 739th TJK-S 254 254 18 hours ago 740th te-chnical 250 258 4 May 2025 741st arebbsba 218 296 9 Jan 2025 742nd Msleizak 🇫🇷 206 226 19 May 2025 743rd AidanWalter 119 540 1 Jan 2025 744th vkptimon 119 776 9 Jul 2025 745th bignamehyp 97 667 14 Nov 2024 746th dokutan 60 2,474 18 Aug 2025 747th lyphyser 0 15 25 May 2025 748th 2bular 0 16 22 Mar 2025 749th darrenks 0 17 22 Mar 2025 750th Natanaelel 🇸🇪 0 18 23 Mar 2025 First Prev 676–750 of 767 Next Last