Puzzles/POY 2008
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Puzzle of the year 2008: find phrases that generate each number i.100 , making no use of
- digits other than 2 0 0 8 in sequence
- _ and __ and _. as numbers
- letters in numeric constants (e.g. 200r8 for 25 is prohibited)
- literal strings
- ?. or ?
The number of words in each phrase is to be minimized. (Word count is according to #;:y ). Where there are multiple phrases for the same number with the same number of words, phrases with fewer essential characters are preferred.
Solutions:
0 /: 2008 1 * 2008 2 2: 008 3 >. 2.008 4 # 2 0 0 8 5 p: 2: 008 6 ! >. 2.008 7 <. ^. 2008 8 {: 200 8 9 # C. 20 08 10 +/ 2 008 11 # #: 2008 12 #. 2 008 13 >: #. 2 008 14 <. %: 200.8 15 >. %: 200.8 16 #. 2 00 8 17 >: #. 2 00 8 18 #. |. 2 008 19 <: <. 20.08 20 {. 20 08 21 >. 20.08 22 >: >. 20.08 23 p: {: 200 8 24 #. 2 0 0 8 25 200 % 8 26 -/ p: 2 0 08 27 ^~ # 20 0 8 or 2 #. p: 00 8 28 2 ! 008 29 #. <: 20 _08 30 #. |. _2 00 8 31 <: #. 20 _08 32 #. 20 _08 33 #. p: 2 008 34 #. |. 2 00 8 35 #. >: 20 _08 36 2 ! _008 37 p: # #: 2008 38 +: <: <. 20.08 39 #. >: 2 0 0 8 40 20 *. 08 41 >. +: 20.08 42 +: >. 20.08 43 # i: >. 20.08 or >. ^. ! 20.08 44 <. %: 2008 45 >. %: 2008 46 >: >. %: 2008 47 <: #. 20 08 48 #. 20 08 49 >: #. 20 08 50 200 % -:8 51 #. >: 20 08 52 #. |. 20 0 8 53 p: >. %: 200.8 54 <. ^ # 2 0 0 8 55 >. ^ # 2 0 0 8 56 >. ^ +: 2.008 57 #. /: 2 # 0 0 8 58 /:&.#: 20.08 59 p: #. 2 00 8 60 #. 20 >. 0 8 61 p: >: #. 2 00 8 62 #. |. _2 0 0 8 63 <. o. 20.08 64 >. o. 20.08 65 #. <: 20 0 _8 66 #. |. 2 0 0 8 67 #. >: +: 20 _08 68 #. 20 + 0 8 69 #. <: *: 2 008 70 +: #. >: 20 _08 71 <: #. 20 0 _8 72 #. 20 0 _8 73 p: <. 20.08 74 #. <: <: 20 0 8 75 #. p: 2 0 0 8 76 >: #. p: 2 0 0 8 77 #. |. >: _2 0 0 8 78 #. , q: 2 008 79 p: >. 20.08 80 #. *: 2 00 8 81 #. <: 20 0 8 82 # , i: 20 08 83 p: >. >: 20.08 84 20 + *: 08 85 >: 20 + *: 08 86 <: <: #. 20 0 8 87 <: #. 20 0 8 88 #. 20 0 8 89 >: #. 20 0 8 90 +: >. %: 2008 91 # i: >. %: 2008 92 -: #. |. 200 _8 93 #. <: +: 20 08 94 -/ p: 20 0 8 95 #. >: 20 0 8 96 #. +: 20 08 97 p: #. 2 0 0 8 98 +/ p: 20 0 8 99 <: -: <. 200.8
See also
- Puzzle of the Year 1996
- Puzzle of the Year 2005
- Puzzle of the Year 2006
- Puzzle of the Year 2007
- Puzzle of the Year 2008
- Puzzle of the Year 2009
- Puzzle of the Year 2010
Discussion
- Perhaps next year's puzzle should forbid >: <: +: and -: as these rather trivially cover more than half of the possible answers. -- Raul Miller <<DateTime(2007-10-17T16:35:01Z)>>
- I dislike these prohibitions because they would rule out expressions like #. >: 20 _08 -- Roger Hui <<DateTime(2007-10-17T20:29:45Z)>>
- I agree with Roger Hui here, I wouldn't like to prohibit those. It doesn't actually cover more than half of the answers because most of the numbers have a two or three token answer, and an extra token like that often makes the solution too bad. -- B Jonas <<DateTime(2007-10-18T06:57:22Z)>>
- Ok, how about prohibiting solutions which begin with one of these -- that accounts for a fifth of the current answers. (That said, note that #. >: 20 _08 is equivalent to #. -. _20 08). -- Raul Miller <<DateTime(2007-10-22T19:26:46Z)>>