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Card Number Validation in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Minesweeper Morse Decoder Morse Encoder Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Minesweeper Morse Decoder Morse Encoder Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 800th mathisfun271 449 144 12ms 14 Oct 2024 800th bob-th 449 144 11ms 22 Oct 2024 803rd grey0ut 446 105 464ms 11 Jan 2025 804th Andrey2001 446 129 549ms 1 Feb 2026 805th dokutan 445 109 10ms 19 Oct 2024 806th croc54 443 146 11ms 15 Dec 2024 807th MyXoToD 🇩🇪 442 146 10ms 26 May 2025 808th Yewzir 🇧🇪 442 171 14ms 26 Dec 2024 809th PyryL 🇫🇮 440 147 11ms 1 Mar 2025 810th mbittner20 437 148 10ms 13 Oct 2024 810th YAJUE114514 437 148 10ms 12 Dec 2025 812th psaban 434 149 18ms 31 Jul 2025 812th TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 812th RodAlc24 🇪🇸 434 149 18ms 22 Feb 2026 815th dokutan 433 130 304ms 17 Oct 2024 816th Mabeloid 🇳🇴 433 133 572ms 2 Oct 2024 817th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 818th snoozingnewt 🇨🇦 432 111 36ms 2 Nov 2025 819th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 820th jameswmccarty 431 150 11ms 5 Oct 2024 820th yousefalizadeh 431 150 11ms 23 Oct 2024 820th feherd 431 150 10ms 31 Oct 2024 820th kadamkaustubh 431 150 11ms 8 Nov 2025 824th varhammer 🇷🇺 431 223 12ms 23 Feb 2025 825th adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 825th voidgloom 425 152 11ms 22 Oct 2024 825th omero-san 425 152 10ms 22 Sep 2025 825th brochmann 🇸🇪 425 152 10ms 12 Oct 2025 829th JOrE20 424 136 751ms 7 Dec 2025 830th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 831st denisfouchard 423 153 10ms 21 Aug 2025 832nd osNiko 🇧🇷 420 154 11ms 21 Aug 2025 833rd scpchicken 🇵🇼 418 91 187ms 24 days ago 834th celiendonze 🇨🇭 417 155 11ms 17 Oct 2025 835th Shotokhan 415 156 10ms 21 Sep 2025 836th lhulinsky 412 157 11ms 21 Oct 2024 837th snoozingnewt 🇨🇦 411 267 28ms 18 Dec 2025 838th ellis-rix 409 158 11ms 9 Dec 2024 839th webmiche 407 159 11ms 3 Nov 2025 840th Mabeloid 🇳🇴 406 159 11ms 12 Oct 2024 841st CheeseCake628 🇳🇴 404 160 108ms 5 Nov 2024 842nd snoozingnewt 🇨🇦 404 223 96ms 2 Nov 2025 843rd pres-abhisheksinha 402 161 10ms 8 Oct 2024 844th aksyristos 401 172 2ms 23 Nov 2025 845th ibixina 399 162 10ms 13 Oct 2024 845th TheAtrossian 399 162 13ms 5 Jan 2025 847th Ralac07 🇦🇺 398 162 14ms 3 Oct 2024 848th zgialor-lab 397 163 18ms 9 days ago 849th Maximizer02 396 201 12ms 1 Oct 2024 850th Vaekor 392 165 11ms 15 Dec 2024 851st snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 852nd dieggsy 389 247 19ms 10 Oct 2024 853rd fischfood 385 176 5ms 22 Oct 2024 854th JOrE20 385 191 157ms 27 Jan 2026 855th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 856th JesseNoEyes 🇺🇸 383 169 10ms 1 Oct 2024 857th CheeseCake628 🇳🇴 381 151 532ms 18 Oct 2025 858th zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 859th ComputerKWasTaken 🇺🇸 378 171 11ms 14 Oct 2024 860th c0d3-4-F00d 🇩🇪 375 184 2ms 9 Jan 2025 861st KatieLG 🇬🇧 375 218 118ms 21 Nov 2025 862nd RobGLambert 375 232 1,411ms 8 Jun 2025 863rd navier-1 374 173 10ms 22 Sep 2025 863rd ComradeSquirrel 374 173 10ms 9 days ago 865th RedzGoose 🇦🇺 371 187 119ms 2 Oct 2024 866th P1nk-P0nk 369 215 3ms 18 Oct 2024 867th clayboll99 367 176 11ms 10 Jul 2025 868th muser-logiccpu 🇺🇦 365 177 18ms 9 Aug 2025 869th snoozingnewt 🇨🇦 364 313 40ms 2 Nov 2025 870th OSYCh314 🇦🇺 363 178 11ms 2 Nov 2024 871st snoozingnewt 🇨🇦 360 267 13ms 2 Nov 2025 872nd calum12345 359 180 11ms 26 Mar 2025 873rd zt14427 355 182 10ms 27 Dec 2024 874th The-Wolfson 355 230 111ms 16 Dec 2024 875th IoLimmer 353 183 11ms 10 Oct 2024 876th sciencejiho 350 197 2ms 11 Feb 2025 877th estomagordo 🇳🇱 348 186 11ms 15 Jul 2025 878th RobGLambert 343 273 200ms 8 Jun 2025 879th Ernest1338 341 275 276ms 26 Oct 2024 880th noahhorlacher 338 191 12ms 7 Dec 2024 881st Inbarw100 333 207 2ms 25 days ago 882nd JOrE20 314 389 56ms 4 Dec 2025 883rd snoozingnewt 🇨🇦 303 200 4ms 2 Nov 2025 884th KatieLG 🇬🇧 300 290 2,515ms 1 Oct 2025 885th gautambp 297 218 11ms 24 Jun 2025 886th kasarino 287 240 2ms 8 Feb 2026 887th KatieLG 🇬🇧 286 241 2ms 1 Oct 2025 888th Zhenyu-Bo 284 228 11ms 30 Jul 2025 889th fantaize 284 330 204ms 10 Mar 2026 890th EthanJantz 281 230 12ms 5 Sep 2025 891st ReterikHub 280 310 215ms 17 Jan 2025 892nd Mikey-Beep 🇬🇧 277 344 17ms 9 days ago 893rd RobertBurs 273 237 11ms 22 Sep 2025 894th MeWhenI 🇻🇦 272 407 119ms 6 Oct 2024 895th TJK-S 268 241 12ms 25 Oct 2025 895th NoneTheFewer 268 241 11ms 25 Dec 2025 897th nickweissert-star 266 176 289ms 39 hours ago 898th kasarino 258 373 44ms 8 Feb 2026 899th te-chnical 251 258 222ms 4 May 2025 900th arebbsba 218 296 10ms 9 Jan 2025 First Prev 801–900 of 942 Next Last