The Taxicab Numbers hole will go live in approximately 3 days. Why not try and solve it ahead of time?
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 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 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 501st emgordon154 670 115 111ms 9 Dec 2025 502nd scpchicken 🇵🇼 669 59 4ms 69 mins ago 503rd Shanethegamer 🇺🇸 669 65 1ms 1 Oct 2024 504th solisolu 669 103 2ms 24 days ago 505th cuvam 🇺🇸 667 97 18ms 4 days ago 506th CaedenHarper 🇨🇦 667 140 531ms 3 Oct 2025 507th dbut2 🇦🇺 666 179 327ms 31 Oct 2024 508th two-bad 🇬🇧 665 97 15ms 2 Oct 2024 508th LordSir101 665 97 10ms 10 Aug 2025 510th BlankSpruce 663 104 2ms 1 Oct 2024 511th yeminghan2021 663 131 65ms 3 Feb 2026 512th Shanethegamer 🇺🇸 663 172 39ms 2 Oct 2024 513th snoozingnewt 🇨🇦 662 180 338ms 2 Nov 2025 514th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 515th MeWhenI 🇻🇦 660 88 129ms 2 Oct 2024 515th Shanethegamer 🇺🇸 660 88 135ms 5 Oct 2024 517th GolfingSuccess 🇬🇷 660 98 18ms 5 Oct 2024 517th JunkIce 660 98 10ms 3 Dec 2024 519th error256 660 142 171ms 31 May 2025 520th GolfingSuccess 🇬🇷 660 174 38ms 25 Mar 2026 521st BambooleanLogic 🇸🇪 658 98 12ms 21 Oct 2024 522nd Herbert00709 🇵🇱 657 105 2ms 14 Jun 2025 523rd AlephSquirrel 657 146 4ms 14 May 2025 524th denkyuu1 656 73 39ms 7 days ago 525th MeWhenI 🇻🇦 655 174 41ms 13 Feb 2025 526th albanian-laundromat 🇺🇸 655 291 12ms 23 days ago 527th MeWhenI 🇻🇦 654 88 524ms 2 Oct 2024 528th voytxt 🇨🇿 653 89 131ms 17 Apr 2025 528th dokutan 653 89 132ms 28 Jun 2025 530th SirBogman 🇺🇸 653 99 17ms 8 Oct 2024 530th solisolu 653 99 22ms 13 Mar 2026 532nd prestosilver 🇺🇸 653 128 407ms 4 days ago 533rd dokutan 651 99 12ms 28 Jun 2025 534th rucin93 🇵🇱 651 144 153ms 28 Oct 2024 535th w911 651 183 327ms 7 Oct 2024 536th DialFrost 🇸🇬 650 67 2ms 22 Dec 2024 537th rniii 650 106 1ms 2 Oct 2024 537th gastropner 650 106 2ms 11 Feb 2025 537th prestosilver 🇺🇸 650 106 2ms 4 days ago 540th albanian-laundromat 🇺🇸 648 257 1,211ms 2 hours ago 541st FlorianCassayre 🇫🇷 647 100 17ms 1 Oct 2024 541st bzijlema 🇳🇱 647 100 19ms 10 Oct 2024 541st bricknellj 647 100 20ms 4 Mar 2025 544th CaedenHarper 🇨🇦 645 100 10ms 22 Aug 2025 544th iczelia 🇩🇪 645 100 13ms 11 Oct 2025 544th Yax42 🇫🇷 645 100 11ms 27 Nov 2025 547th koipondx86 645 123 2ms 8 Nov 2024 548th frankgraziano 645 128 8ms 21 Feb 2026 549th tomh1012 644 111 474ms 8 Sep 2025 550th Apataras 644 145 459ms 25 Jun 2025 551st Shanethegamer 🇺🇸 643 124 8ms 4 Oct 2024 552nd elgan65536 🇺🇸 642 146 169ms 2 Oct 2024 552nd luuumine 🇫🇷 642 146 153ms 26 Nov 2025 554th stefangimmillaro 641 73 324ms 1 Oct 2024 555th btjones0 640 101 18ms 2 Dec 2024 556th dokutan 640 146 455ms 23 Nov 2025 557th MeWhenI 🇻🇦 638 73 7ms 3 Oct 2024 558th Yax42 🇫🇷 638 108 2ms 24 Mar 2026 559th emgordon154 636 111 4ms 12 Jan 2025 560th MeWhenI 🇻🇦 634 91 750ms 29 Aug 2025 561st annaproxy 634 102 18ms 1 Oct 2024 561st xyangst 634 102 10ms 1 Oct 2024 561st aksyristos 634 102 19ms 26 days ago 561st scpchicken 🇵🇼 634 102 17ms 14 days ago 561st vang1ong7ang 634 102 17ms 2 days ago 566th msbranicky 634 188 328ms 7 Jan 2025 567th Shanethegamer 🇺🇸 632 74 290ms 16 Oct 2024 568th Florian-Mt 632 102 11ms 5 Dec 2025 569th robin-scragg 628 103 12ms 21 Aug 2025 570th Jonatan6 🇩🇰 627 110 2ms 24 Oct 2024 571st DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 572nd AlephSquirrel 625 40 47ms 1 Oct 2024 573rd dokutan 624 127 2ms 10 Dec 2024 574th BalaM314 620 104 11ms 4 Feb 2025 574th acollett89 620 104 11ms 15 Jul 2025 576th Ripick 620 135 390ms 23 Mar 2025 577th codereport 🇨🇦 619 63 33ms 2 Oct 2024 578th SirBogman 🇺🇸 619 93 529ms 23 Jul 2025 579th MarcMush 🇫🇷 618 91 830ms 8 Oct 2024 580th fourth-bit 616 105 18ms 1 Oct 2024 580th jared-hughes 616 105 17ms 3 Oct 2024 580th mattyhempstead 616 105 28ms 7 Oct 2024 583rd bac0id 616 141 426ms 10 Jan 2025 584th olleicua 🇺🇸 614 78 38ms 18 Oct 2024 585th evnu 612 147 87ms 12 Oct 2025 586th Seanharrs 🇦🇺 611 117 454ms 15 Nov 2024 587th vang1ong7ang 610 41 45ms 2 days ago 588th davecame 610 106 18ms 1 Oct 2024 588th starfihs 610 106 11ms 2 Oct 2024 588th rschwa6308 🇺🇸 610 106 19ms 28 Oct 2024 588th snydej 610 106 20ms 21 Nov 2024 588th andrewjc2000 610 106 19ms 17 Jul 2025 588th travisdoesmath 610 106 18ms 7 Sep 2025 594th not-a-pokemon 610 113 1ms 23 Jul 2025 595th kaascevich 609 134 126ms 9 Jul 2025 596th Shanethegamer 🇺🇸 609 154 153ms 3 Oct 2024 597th daveberlin 608 106 11ms 27 Jun 2025 598th alemelis 605 93 468ms 1 Oct 2024 599th jupj 🇫🇮 605 114 2ms 20 Jul 2025 600th albanian-laundromat 🇺🇸 604 72 1ms 25 Feb 2026 First Prev 501–600 of 941 Next Last