The Tower of Hanoi hole will go live in approximately 11 hours. Why not try and solve it ahead of time?
Van Eck Sequence 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 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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 297th albanian-laundromat 869 59 12ms 30 Jul 2025 297th RaBa21 🇭🇺 869 59 11ms 11 Aug 2025 303rd namelessiw 869 88 349ms 14 days ago 303rd DialFrost 🇸🇬 869 88 336ms 14 days ago 305th primo-ppcg 🇹🇭 869 195 12ms 13 Aug 2025 306th GrayJoKing 🇦🇺 868 83 450ms 14 Mar 2022 307th RockOfStone 865 56 3ms 5 Nov 2021 308th sean-niemann 🇺🇸 865 71 89ms 30 Dec 2024 309th bitsandbeyond 🇳🇱 864 45 500ms 24 days ago 310th primo-ppcg 🇹🇭 863 84 326ms 21 Nov 2021 311th sean-niemann 🇺🇸 861 68 2ms 2 Jan 2025 312th primo-ppcg 🇹🇭 860 63 5ms 16 Aug 2023 313th primo-ppcg 🇹🇭 859 36 5ms 1 May 2021 313th HPWiz 🇳🇿 859 36 4ms 2 May 2021 315th Lydxn 🇨🇦 859 46 1,137ms 27 Jun 2023 316th b-illy 🇬🇧 859 56 371ms 7 Sep 2024 317th zacjl 858 81 44ms 14 Feb 2025 318th MichalMarsalek 🇨🇿 857 61 133ms 15 Nov 2021 318th GrayJoKing 🇦🇺 857 61 136ms 8 May 2022 320th KasperKivimaeki 🇫🇮 857 110 260ms 29 Sep 2025 321st jared-hughes 857 169 8ms 17 Mar 2023 322nd jared-hughes 855 28 38ms 23 Sep 2021 322nd neel11235813 855 28 42ms 4 Mar 2023 324th DialFrost 🇸🇬 855 76 99ms 12 hours ago 324th snoozingnewt 🇺🇸 855 76 105ms 12 hours ago 326th m-tkach 🇺🇦 855 92 55ms 2 Jan 2022 326th inventshah 855 92 50ms 16 Dec 2022 326th 09cf 855 92 48ms 9 Sep 2023 326th ovs-code 🇩🇪 855 92 53ms 3 Jun 2024 326th KasperKivimaeki 🇫🇮 855 92 58ms 2 days ago 331st dmrichwa 🇺🇸 854 48 10ms 25 Apr 2022 332nd marcin7Cd 854 60 11ms 1 May 2021 332nd RYNO8 854 60 29ms 29 Aug 2021 332nd jared-hughes 854 60 11ms 11 Sep 2022 332nd quimey 854 60 11ms 15 Mar 2023 332nd janbehrens 🇩🇪 854 60 11ms 17 Jun 2023 332nd tobeannouncd 854 60 10ms 18 Sep 2023 332nd Hyunwook-Kim-WV 854 60 11ms 7 Aug 2025 332nd blaztoma 🇱🇹 854 60 29ms 11 Sep 2025 332nd jacekwladzinski 854 60 29ms 3 Oct 2025 332nd edsrzf 🇳🇿 854 60 11ms 5 days ago 342nd JayXon 🇺🇸 854 159 1,584ms 15 Sep 2025 343rd GrayJoKing 🇦🇺 853 43 125ms 4 Aug 2024 344th stefangimmillaro 853 72 82ms 7 May 2023 345th namelessiw 852 85 325ms 16 Aug 2025 345th DialFrost 🇸🇬 852 85 357ms 14 days ago 347th GrayJoKing 🇦🇺 850 24 3ms 5 Jun 2025 348th MeWhenI 🇻🇦 850 208 988ms 12 Dec 2021 349th Shanethegamer 🇺🇸 849 169 515ms 28 Apr 2025 350th primo-ppcg 🇹🇭 846 72 22ms 22 Jan 2023 351st yeminghan2021 845 93 52ms 3 Feb 2025 352nd CaedenHarper 🇨🇦 844 57 397ms 10 Sep 2024 352nd DialFrost 🇸🇬 844 57 437ms 30 Dec 2024 354th Steffan153 🇫🇮 843 64 108ms 18 Jul 2024 355th tomtheisen 🇺🇸 843 86 321ms 21 Nov 2021 356th emplv 🇱🇻 842 112 267ms 19 Feb 2022 357th primo-ppcg 🇹🇭 841 47 975ms 1 May 2021 357th pardouin 🇫🇷 841 47 890ms 10 Sep 2025 359th ovs-code 🇩🇪 841 58 31ms 1 Jul 2024 360th Shanethegamer 🇺🇸 841 73 99ms 13 May 2021 361st knyghty 840 61 11ms 17 Feb 2024 361st zacjl 840 61 10ms 11 Sep 2024 361st MeWhenI 🇻🇦 840 61 10ms 29 Apr 2025 361st robin-scragg 840 61 11ms 24 Jul 2025 361st ryyyn 🇺🇸 840 61 15ms 9 days ago 366th error256 839 57 90ms 13 Sep 2024 367th ovs-code 🇩🇪 839 171 483ms 9 Mar 2025 368th Steffan153 🇫🇮 837 46 2ms 20 Jul 2024 368th sean-niemann 🇺🇸 837 46 2ms 28 Apr 2025 370th m-tkach 🇺🇦 837 70 3ms 20 Dec 2021 370th inventshah 837 70 3ms 24 Nov 2022 370th ovs-code 🇩🇪 837 70 3ms 12 Feb 2023 370th ListeriaM 837 70 3ms 21 Aug 2023 374th duckyluuk 🇳🇱 836 49 10ms 3 Oct 2024 375th MeWhenI 🇻🇦 836 94 52ms 8 May 2022 First Prev 301–375 of 1,767 Next Last