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 676th MeWhenI 🇻🇦 499 149 4 Oct 2024 677th CheeseCake628 🇳🇴 498 160 5 Nov 2024 678th Mabeloid 🇳🇴 497 133 2 Oct 2024 679th jlangvand 497 141 15 Oct 2024 679th HumanoidCPU 497 141 7 Mar 2025 681st janAkali 🇷🇺 497 167 8 Oct 2024 682nd pres-abhisheksinha 494 161 8 Oct 2024 683rd TheRealOhead 🇺🇸 491 131 1 Oct 2024 684th ibixina 491 162 13 Oct 2024 684th TheAtrossian 491 162 5 Jan 2025 686th HumanoidCPU 490 145 5 Oct 2024 687th JunkIce 486 136 3 Dec 2024 688th h-hh-hhh 🇺🇦 485 177 2 Nov 2024 689th Mabeloid 🇳🇴 484 145 2 Oct 2024 690th Vaekor 482 165 15 Dec 2024 691st alphafalfa 479 92 8 Nov 2024 692nd h-hh-hhh 🇺🇦 477 147 2 Nov 2024 693rd mitzal 477 180 9 Feb 2025 694th ravnskjaer 🇩🇰 475 195 20 Dec 2024 695th MiffOttah 473 150 6 Oct 2024 696th JesseNoEyes 🇺🇸 471 169 1 Oct 2024 697th Maximizer02 471 201 1 Oct 2024 698th iczelia 🇩🇪 469 94 23 days ago 699th ejini6969 468 102 14 Jun 2025 700th zyc-2024 🇨🇳 468 170 5 Oct 2024 701st luca1339 468 198 4 Nov 2024 702nd ComputerKWasTaken 🇺🇸 466 171 14 Oct 2024 703rd Yewzir 🇧🇪 460 171 26 Dec 2024 704th navier-1 460 173 24 days ago 705th madex 🇩🇪 459 104 2 Oct 2024 706th Jacob385 459 202 2 Oct 2024 707th clayboll99 452 176 10 Jul 2025 708th dokutan 451 63 26 Nov 2024 709th Upload-and-View 🇺🇦 450 177 9 Aug 2025 710th IISResetMe 449 104 27 Mar 2025 711th varhammer 🇷🇺 448 223 23 Feb 2025 712th OSYCh314 🇦🇺 447 178 2 Nov 2024 713th dokutan 445 109 19 Oct 2024 714th grey0ut 444 105 11 Jan 2025 715th calum12345 442 180 26 Mar 2025 716th MyXoToD 🇩🇪 440 146 26 May 2025 717th zt14427 437 182 27 Dec 2024 718th IoLimmer 435 183 10 Oct 2024 719th aksyristos 433 184 15 Nov 2024 720th KatieLG 🇬🇧 432 183 14 days ago 721st KatieLG 🇬🇧 431 108 13 Oct 2024 722nd estomagordo 🇳🇱 428 186 15 Jul 2025 723rd dokutan 424 132 3 Oct 2024 724th MeWhenI 🇻🇦 417 143 2 Oct 2024 725th CheeseCake628 🇳🇴 413 160 19 May 2025 726th dieggsy 405 247 10 Oct 2024 727th Mabeloid 🇳🇴 404 159 12 Oct 2024 728th Ralac07 🇦🇺 397 162 3 Oct 2024 729th Arkadios200 397 204 26 days ago 730th snoozingnewt 🇺🇸 383 176 2 Oct 2024 730th fischfood 383 176 22 Oct 2024 732nd c0d3-4-F00d 🇩🇪 381 184 9 Jan 2025 733rd ehulinsky 🇺🇸 378 158 2 Apr 2025 734th RobGLambert 370 232 8 Jun 2025 735th RedzGoose 🇦🇺 369 187 2 Oct 2024 736th P1nk-P0nk 367 215 18 Oct 2024 737th gautambp 365 218 24 Jun 2025 738th sciencejiho 356 197 11 Feb 2025 739th The-Wolfson 352 230 16 Dec 2024 740th Zhenyu-Bo 349 228 30 Jul 2025 741st EthanJantz 346 230 5 Sep 2025 742nd RobGLambert 340 273 8 Jun 2025 743rd Ernest1338 338 275 26 Oct 2024 744th noahhorlacher 337 191 7 Dec 2024 745th RobertBurs 336 237 24 days ago 746th TJK-S 328 243 8 days ago 747th te-chnical 309 258 4 May 2025 748th KatieLG 🇬🇧 296 290 15 days ago 749th KatieLG 🇬🇧 291 241 15 days ago 750th ReterikHub 277 310 17 Jan 2025 First Prev 676–750 of 782 Next Last