The Tower of Hanoi hole will go live in approximately 8 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 601st primo-ppcg 🇹🇭 722 45 102ms 21 Jun 2021 602nd Drew-j-Smith 722 71 41ms 19 Apr 2022 602nd commandblockguy 🇺🇸 722 71 12ms 22 Sep 2022 604th ovs-code 🇩🇪 719 51 133ms 17 Nov 2024 605th eranws 719 57 9ms 9 Sep 2022 605th iczelia 🇩🇪 719 57 10ms 11 Oct 2025 607th stefangimmillaro 719 75 108ms 25 Jun 2023 608th albanian-laundromat 718 67 349ms 23 Oct 2025 609th inventshah 718 131 122ms 9 Sep 2022 610th albanian-laundromat 717 77 169ms 10 days ago 611th cure-honey 🇯🇵 717 109 146ms 11 Jul 2021 611th mousetail 🇳🇱 717 109 128ms 18 Jan 2024 613th snoozingnewt 🇺🇸 714 82 2ms 13 Oct 2025 614th mauro-1 🇮🇹 712 72 16ms 18 Aug 2021 614th PiterAnnema 712 72 36ms 23 Mar 2022 614th Andrey135296 712 72 11ms 4 Apr 2022 614th TaserTheFox 🇺🇸 712 72 11ms 27 Jan 2023 614th Fracture17 712 72 38ms 13 Apr 2023 614th WillConker 712 72 49ms 10 Mar 2024 614th jipsong 🇩🇪 712 72 18ms 10 Jun 2024 614th CutSandstone 712 72 51ms 5 Jul 2024 622nd sean-niemann 🇺🇸 710 110 126ms 9 Jun 2025 623rd emplv 🇱🇻 709 118 28ms 29 Jun 2022 624th rak1507 🇬🇧 708 76 196ms 29 Jun 2021 624th GrayJoKing 🇦🇺 708 76 142ms 14 Mar 2022 626th Irratix 🇳🇱 708 111 57ms 3 Jan 2022 626th Yewzir 🇧🇪 708 111 53ms 11 Feb 2024 628th emgordon154 707 52 46ms 27 Nov 2024 628th olleicua 🇺🇸 707 52 40ms 25 Feb 2025 628th codereport 🇨🇦 707 52 37ms 21 Apr 2025 628th snoozingnewt 🇺🇸 707 52 42ms 13 Oct 2025 632nd dokutan 707 68 412ms 12 Feb 2025 633rd emgordon154 707 203 495ms 24 days ago 634th KatieLG 🇬🇧 706 56 987ms 13 Oct 2021 635th Shanethegamer 🇺🇸 704 34 42ms 6 May 2021 635th MeWhenI 🇻🇦 704 34 38ms 9 Nov 2021 635th sisyphus-ppcg 🇦🇺 704 34 41ms 2 Mar 2022 638th jared-hughes 704 51 6ms 17 Jul 2022 639th snoozingnewt 🇺🇸 704 63 93ms 39 hours ago 640th razetime 703 29 3ms 13 Jan 2022 641st snoozingnewt 🇺🇸 702 69 3ms 13 Oct 2025 642nd Irratix 🇳🇱 702 73 44ms 7 May 2022 642nd fredrik-bakke 🇳🇴 702 73 36ms 2 Oct 2022 642nd fourth-bit 702 73 46ms 5 Dec 2022 642nd CatsAreFluffy 702 73 22ms 17 Dec 2022 642nd jmerle 🇳🇱 702 73 66ms 16 Feb 2023 642nd AlexanderFair 702 73 44ms 2 Jul 2023 642nd NickTheEASDude 🇺🇸 702 73 43ms 6 Aug 2024 642nd AtengChen 702 73 11ms 27 Aug 2024 642nd andrewjc2000 702 73 45ms 18 Jul 2025 642nd madeforlosers 702 73 11ms 17 days ago 652nd Herbert00709 🇵🇱 702 112 52ms 1 Nov 2024 653rd GolfingSuccess 🇬🇷 701 81 25ms 11 Sep 2022 654th MeWhenI 🇻🇦 700 194 1,639ms 22 days ago 655th luuumine 🇫🇷 698 112 122ms 13 days ago 656th commandblockguy 🇺🇸 697 69 371ms 15 Jan 2024 656th TheZwierzLF 🇵🇱 697 69 370ms 7 days ago 658th oceko 696 113 57ms 19 Feb 2024 659th MeWhenI 🇻🇦 695 114 29ms 7 Jun 2023 660th ovs-code 🇩🇪 694 86 5ms 21 Jul 2024 661st adoxography 693 53 42ms 20 Aug 2021 661st schachmattmatt 693 53 50ms 25 Sep 2021 661st anter69 🇭🇺 693 53 44ms 9 Jan 2023 661st tatzyr 🇯🇵 693 53 43ms 18 Jan 2025 665th adoxography 693 74 47ms 20 Aug 2021 665th m42km 693 74 11ms 25 Nov 2023 665th Stockoh 🇫🇷 693 74 43ms 23 Jun 2024 665th TheZwierzLF 🇵🇱 693 74 11ms 24 May 2025 669th MeWhenI 🇻🇦 692 90 44ms 17 Feb 2023 670th ian-h-chamberlain 🇺🇸 692 113 125ms 6 Jul 2022 671st frankgraziano 692 245 15ms 30 Sep 2025 672nd Shanethegamer 🇺🇸 691 78 103ms 15 Oct 2022 673rd arjanadriaanse 🇳🇱 690 78 127ms 10 Feb 2022 673rd tobeannouncd 690 78 1,467ms 8 Jan 2024 675th emgordon154 689 85 3ms 24 Dec 2021 First Prev 601–675 of 1,767 Next Last