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 bytes. 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 Bytes Time Submitted 201st KasperKivimaeki 🇫🇮 844 103 435ms 8 Dec 2025 202nd IanUtley 844 113 19ms 2 Oct 2024 203rd sean-niemann 🇺🇸 844 114 41ms 2 Oct 2024 204th sean-niemann 🇺🇸 844 121 2ms 30 Nov 2024 204th edsrzf 🇳🇿 844 121 3ms 21 Feb 2026 206th edsrzf 🇳🇿 843 98 7ms 25 Feb 2026 207th nwellnhof 🇩🇪 842 84 2ms 2 Oct 2024 207th ovs-code 🇩🇪 842 84 1ms 2 Nov 2024 207th inventshah 842 84 2ms 31 Mar 2025 210th emplv 🇱🇻 842 145 28ms 24 Oct 2024 211th GrayJoKing 🇦🇺 840 47 5ms 1 Oct 2024 211th Steffan153 🇫🇮 840 47 4ms 16 Feb 2026 213th xsot 🇸🇬 840 57 38ms 6 May 2025 214th kg583 🇺🇸 840 84 5ms 26 Mar 2026 215th moustave 840 95 23ms 4 Nov 2024 215th emgordon154 840 95 18ms 18 Nov 2024 217th emplv 🇱🇻 839 142 324ms 2 Oct 2024 217th sean-niemann 🇺🇸 839 142 332ms 2 Oct 2024 219th edsrzf 🇳🇿 838 131 28ms 10 Feb 2026 220th Shanethegamer 🇺🇸 837 77 13ms 1 Oct 2024 220th biocommando 🇫🇮 837 77 11ms 13 Jun 2025 222nd edsrzf 🇳🇿 837 83 121ms 21 Feb 2026 223rd stefangimmillaro 837 112 156ms 4 Oct 2024 224th kg583 🇺🇸 837 113 6ms 20 Feb 2026 225th stefangimmillaro 836 68 1,313ms 2 Oct 2024 226th sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 226th Steffan153 🇫🇮 836 81 11ms 11 Feb 2026 228th edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 229th stefangimmillaro 834 80 2,477ms 12 Nov 2024 230th edsrzf 🇳🇿 833 108 88ms 26 Jul 2025 231st MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 232nd MeWhenI 🇻🇦 833 143 340ms 2 Oct 2024 233rd emplv 🇱🇻 832 77 131ms 28 Mar 2025 234th saito-ta 🇯🇵 832 85 1ms 1 Oct 2024 235th MeWhenI 🇻🇦 831 96 17ms 30 Jul 2025 236th edsrzf 🇳🇿 831 108 1,581ms 11 days ago 237th kg583 🇺🇸 829 80 457ms 20 Feb 2026 238th nwellnhof 🇩🇪 828 105 444ms 22 Jan 2026 239th dcgjb 827 78 11ms 6 May 2025 240th edsrzf 🇳🇿 827 139 37ms 12 days ago 241st m-tkach 🇺🇦 826 58 43ms 8 Oct 2024 242nd stefangimmillaro 825 99 128ms 3 Oct 2024 243rd ovs-code 🇩🇪 825 200 1,204ms 19 Apr 2025 244th retrohun 824 71 9ms 10 Jan 2025 245th sean-niemann 🇺🇸 822 48 4ms 9 Aug 2025 246th DialFrost 🇸🇬 822 82 111ms 23 Jun 2025 247th MeWhenI 🇻🇦 822 92 12ms 24 Dec 2024 248th plcc0 822 97 18ms 12 Jan 2026 249th primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 250th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 251st ovs-code 🇩🇪 820 106 439ms 1 Oct 2024 251st inventshah 820 106 420ms 1 Oct 2024 253rd MeWhenI 🇻🇦 819 85 2ms 5 Oct 2024 253rd albanian-laundromat 🇺🇸 819 85 2ms 15 days ago 255th MeWhenI 🇻🇦 819 114 540ms 7 Nov 2025 256th frosster 🇨🇦 818 97 2ms 11 Feb 2026 257th GrayJoKing 🇦🇺 818 101 7ms 27 Feb 2026 258th MeWhenI 🇻🇦 817 85 110ms 4 Oct 2024 259th MeWhenI 🇻🇦 817 104 19ms 2 Oct 2024 260th canissimia 🇦🇶 817 130 3ms 4 Oct 2024 261st MeWhenI 🇻🇦 817 186 17ms 2 Oct 2024 261st JayXon 🇺🇸 817 186 1,687ms 12 days ago 263rd Shanethegamer 🇺🇸 816 69 322ms 2 Oct 2024 264th sisyphus-ppcg 🇦🇺 816 83 10ms 2 Oct 2024 265th lifthrasiir 🇰🇷 815 197 9ms 19 Dec 2024 266th GolfingSuccess 🇬🇷 814 98 18ms 5 Oct 2024 266th albanian-laundromat 🇺🇸 814 98 18ms 3 Nov 2025 268th albanian-laundromat 🇺🇸 813 118 4ms 11 Dec 2025 269th Natanaelel 🇸🇪 812 59 38ms 7 Feb 2025 270th Shanethegamer 🇺🇸 812 70 1,560ms 9 Apr 2025 271st sean-niemann 🇺🇸 812 115 484ms 24 Sep 2025 271st stefangimmillaro 812 115 724ms 6 Oct 2025 273rd stefangimmillaro 810 126 2ms 3 Oct 2024 274th sean-niemann 🇺🇸 809 82 473ms 23 Dec 2024 275th CLOStrophobic 🇮🇹 808 119 6ms 24 Feb 2025 276th stefangimmillaro 808 134 41ms 3 Oct 2024 277th GolfingSuccess 🇬🇷 806 31 79ms 5 Oct 2024 278th trinityy-7 806 80 11ms 23 Jul 2025 279th SirBogman 🇺🇸 806 99 17ms 8 Oct 2024 279th solisolu 806 99 22ms 13 Mar 2026 279th BrunoVisnadi 🇧🇷 806 99 16ms 22 Mar 2026 282nd error256 805 116 451ms 24 Sep 2025 283rd albanian-laundromat 🇺🇸 805 148 352ms 3 Dec 2025 284th emgordon154 805 205 1,206ms 7 Mar 2025 285th antimon2 🇯🇵 804 70 541ms 9 Oct 2024 286th MeWhenI 🇻🇦 804 88 1ms 2 Oct 2024 287th stefangimmillaro 804 89 459ms 4 Oct 2024 288th edsrzf 🇳🇿 804 104 443ms 21 Feb 2026 289th MeWhenI 🇻🇦 804 127 2ms 5 Oct 2024 289th albanian-laundromat 🇺🇸 804 127 3ms 3 Nov 2025 291st GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 292nd Shanethegamer 🇺🇸 803 138 142ms 3 Oct 2024 293rd DialFrost 🇸🇬 802 106 25ms 23 Mar 2025 294th ovs-code 🇩🇪 802 119 15ms 1 Oct 2024 295th albanian-laundromat 🇺🇸 802 120 42ms 3 Nov 2025 296th anter69 🇭🇺 800 71 1,471ms 25 Feb 2026 297th Shanethegamer 🇺🇸 800 102 451ms 4 Oct 2024 298th duckyluuk 🇳🇱 799 83 532ms 3 Oct 2024 298th emgordon154 799 83 420ms 18 Nov 2024 300th sean-niemann 🇺🇸 799 92 158ms 1 Oct 2025 First Prev 201–300 of 943 Next Last