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    The Calendar hole will go live in approximately . Why not try and solve it ahead of time?

    # Hole Solutions Golfers Per Golfer Avg Time
    1st Fizz Buzz 26,427 6,537 4.04
    2nd Fibonacci 19,122 3,821 5.00
    3rd Quine 11,268 1,491 7.56
    4th Divisors 10,816 2,793 3.87
    5th Prime Numbers 10,688 2,352 4.54
    6th Evil Numbers 10,029 2,410 4.16
    7th Leap Years 9,511 2,116 4.49
    8th Abundant Numbers 8,544 2,060 4.15
    9th Niven Numbers 8,256 1,666 4.96
    10th Odious Numbers 8,109 1,742 4.65
    11th π 7,945 1,141 6.96
    12th 12 Days of Christmas 7,941 2,337 3.40
    13th 99 Bottles of Beer 7,697 2,413 3.19
    14th Collatz 6,996 1,429 4.90
    15th Foo Fizz Buzz Bar 6,773 1,581 4.28
    16th 𝑒 6,715 783 8.58
    17th Pernicious Numbers 6,568 1,113 5.90
    18th Happy Numbers 6,273 1,283 4.89
    19th Emirp Numbers 6,255 1,416 4.42
    20th Christmas Trees 6,040 1,568 3.85
    21st Tutorial 5,986 629 9.52
    22nd Pascal’s Triangle 5,940 1,252 4.74
    23rd Prime Numbers (Long) 5,908 999 5.91
    24th √2 5,608 832 6.74
    25th Evil Numbers (Long) 5,487 994 5.52
    26th Abundant Numbers (Long) 5,254 972 5.41
    27th Pangram Grep 5,191 1,073 4.84
    28th Odious Numbers (Long) 4,995 805 6.20
    29th Niven Numbers (Long) 4,955 797 6.22
    30th λ 4,898 442 11.08
    31st Diamonds 4,837 1,073 4.51
    32nd φ 4,822 620 7.78
    33rd Tongue-twisters 4,698 879 5.34
    34th τ 4,522 584 7.74
    35th ASCII Table 4,463 907 4.92
    36th Sierpiński Triangle 4,095 725 5.65
    37th Happy Numbers (Long) 4,075 636 6.41
    38th Look and Say 4,064 735 5.53
    39th Arithmetic Numbers 4,031 769 5.24
    40th Recamán 3,995 688 5.81
    41st Catalan Numbers 3,954 620 6.38
    42nd Fractions 3,807 970 3.92
    43rd Kolakoski Sequence 3,763 514 7.32
    44th Arabic to Roman 3,729 1,019 3.66
    45th Ordinal Numbers 3,719 902 4.12
    46th Leyland Numbers 3,713 639 5.81
    47th Pernicious Numbers (Long) 3,625 476 7.62
    48th Van Eck Sequence 3,594 557 6.45
    49th ln 2 3,452 384 8.99
    50th Number Spiral 3,444 498 6.92
    51st Emirp Numbers (Long) 3,420 551 6.21
    52nd Kolakoski Constant 3,401 317 10.73
    53rd Catalan’s Constant 3,370 373 9.03
    54th Cubes 3,330 666 5.00
    55th γ 3,314 253 13.10
    56th Inventory Sequence 3,246 389 8.34
    57th Rule 110 3,244 562 5.77
    58th ISBN 3,125 676 4.62
    59th Lucky Numbers 3,075 423 7.27
    60th Smith Numbers 3,044 420 7.25
    61st Farey Sequence 2,957 356 8.31
    62nd Vampire Numbers 2,954 474 6.23
    63rd Roman to Arabic 2,911 640 4.55
    64th Seven Segment 2,904 799 3.63
    65th Day of Week 2,880 637 4.52
    66th Ascending Primes 2,866 430 6.67
    67th Factorial Factorisation 2,856 352 8.11
    68th brainfuck 2,811 791 3.55
    69th United States 2,782 747 3.72
    70th Rijndael S-box 2,719 307 8.86
    71st Intersection 2,598 641 4.05
    72nd Emojify 2,594 692 3.75
    73rd Arrows 2,553 654 3.90
    74th CSS Colors 2,517 617 4.08
    75th Reverse Polish Notation 2,319 508 4.56
    76th Gijswijt’s Sequence 2,295 250 9.18
    77th Levenshtein Distance 2,294 407 5.64
    78th Tower of Hanoi 2,252 159 14.16
    79th Rock-paper-scissors-Spock-lizard 2,204 571 3.86
    80th Partition Numbers 2,124 213 9.97
    81st 24 Game 2,112 275 7.68
    82nd Spelling Numbers 2,102 529 3.97
    83rd N Queens 2,030 222 9.14
    84th Kaprekar Numbers 1,975 216 9.14
    85th Morse Encoder 1,970 544 3.62
    86th ROT13 1,943 381 5.10
    87th Mandelbrot 1,858 189 9.83
    88th Trinomial Triangle 1,808 203 8.91
    89th Morse Decoder 1,749 473 3.70
    90th Transpose Sentence 1,709 350 4.88
    91st Card Number Validation 1,702 383 4.44
    92nd Polyominoes 1,675 159 10.53
    93rd Forsyth–Edwards Notation 1,660 327 5.08
    94th Game of Life 1,657 375 4.42
    95th Lucky Tickets 1,645 264 6.23
    96th Hexdump 1,641 350 4.69
    97th Hilbert Curve 1,479 146 10.13
    98th PalindromemordnilaP 1,431 296 4.83
    99th Jacobi Symbol 1,406 255 5.51
    100th Zeckendorf Representation 1,365 227 6.01
    101st Tic-tac-toe 1,355 265 5.11
    102nd Time Distance 1,348 327 4.12
    103rd Zodiac Signs 1,263 223 5.66
    104th Medal Tally 1,190 257 4.63
    105th Scrambled Sort 1,188 235 5.06
    106th Musical Chords 1,186 178 6.66
    107th Proximity Grid 1,164 203 5.73
    108th Ten-pin Bowling 1,164 210 5.54
    109th Star Wars Opening Crawl 1,142 254 4.50
    110th Maze 1,139 228 5.00
    111th Poker 1,111 259 4.29
    112th Sudoku 1,109 282 3.93
    113th Repeating Decimals 1,074 245 4.38
    114th DFA Simulator 1,003 204 4.92
    115th Sudoku (Fill-in) 972 202 4.81
    116th QR Decoder 926 178 5.20
    117th Set 925 178 5.20
    118th Billiards 922 169 5.46
    119th Reversi 884 147 6.01
    120th SI Units 870 151 5.76
    121st Minesweeper 736 154 4.78
    122nd Semiprime Numbers 734 46 15.96
    123rd Sphenic Numbers 715 43 16.63
    124th Topological Sort 690 147 4.69
    125th Star Wars GPT 684 155 4.41
    126th Hexagonal Spiral 625 25 25.00
    127th Highly Composite Numbers 625 32 19.53
    128th Mahjong 608 115 5.29
    129th Odd Polyomino Tiling 539 12 44.92
    130th Apéry’s Constant 513 56 9.16
    131st Taxicab Numbers 463 35 13.23
    132nd Gray Code Encoder 448 54 8.30
    133rd Gray Code Decoder 383 53 7.23
    134th Calendar 303 100 3.03
    135th Polygon Triangulations 248 22 11.27
    136th Ellipse Perimeters 216 42 5.14
    137th Smooth Numbers 210 19 11.05
    138th Continued Fractions 187 32 5.84
    139th Flags 162 15 10.80
    140th Floyd-Steinberg Dithering 136 13 10.46
    141st CSS Colors (Inverse) 76 19 4.00
    142nd Multitap Input 75 21 3.57
    143rd Snake 73 26 2.81
    144th Connect Four 41 15 2.73
    145th p-adic Expansion 25 9 2.78
    146th Binary Lambda Calculus 24 7 3.43
    147th CSS Grid 18 7 2.57
    148th Turtle 17 9 1.89
    149th Quadratic Formula 12 5 2.40
    150th NFA Simulator 8 3 2.67
    151st QR Encoder 2 1 2.00