Saturday, December 5, 2009

Midgame progress

17+ (Peltier*-RichardsFink)
1(18)1[2-9], 1(19)18[10-13]
10(20)19, 13(21)20
10(22)10[11,12], 22(23)13
13(24)21, 23(25)24
14(26)14[15], 15(27)26
Posted by at

7 comments:

  1. EponymousDecember 5, 2009 at 4:18 PM

    This comment has been removed by the author.

    ReplyDelete
  2. EponymousDecember 5, 2009 at 4:20 PM

    Sorry, I made an error in the notation. It should be:
    17+ (Peltier*-RichardsFink)
    1(18)1[2-9], 1(19)18[10-13]
    10(20)19, 13(21)20
    10(22)10[11,12], 22(23)13
    13(24)21, 23(25)24
    14(26)14[15], 14(27)26

    Also I got turned around on the graphic, it shouldn't have any gameplay effect as the spots are not numbered.

    ReplyDelete
  3. CarrollDecember 6, 2009 at 6:52 AM

    Yes, correct notation for your move should tell on which side of the loop you make your pivot with @ qualifier:
    14(27@16)26, and yes not numbering spots has many advantages! :)

    17+ (Peltier*-RichardsFink)
    1(18)1[2-9], 1(19)18[10-13]
    10(20)19, 13(21)20
    10(22)10[11,12], 22(23)13
    13(24)21, 23(25)24
    14(26)14[15],14(27@16)26
    16(28)16[17]

    ReplyDelete
  4. EponymousDecember 6, 2009 at 3:31 PM

    Aha! So that's how you use the @. Makes sense now.

    17+ (Peltier*-RichardsFink)
    1(18)1[2-9], 1(19)18[10-13]
    10(20)19, 13(21)20
    10(22)10[11,12], 22(23)13
    13(24)21, 23(25)24
    14(26)14[15],14(27@16)26
    16(28)16[17], 27(29)16

    ReplyDelete
  5. CarrollDecember 7, 2009 at 4:54 AM

    17+ (Peltier*-RichardsFink)
    1(18)1[2-9], 1(19)18[10-13]
    10(20)19, 13(21)20
    10(22)10[11,12], 22(23)13
    13(24)21, 23(25)24
    14(26)14[15],14(27@16)26
    16(28)16[17], 27(29)16
    17(30)28,

    Do you use "same parity of cannibals and survivors" rule to detect P-regions (of nim value *0)?

    ReplyDelete
  6. EponymousDecember 7, 2009 at 1:12 PM

    17+ (Peltier*-RichardsFink)
    1(18)1[2-9], 1(19)18[10-13]
    10(20)19, 13(21)20
    10(22)10[11,12], 22(23)13
    13(24)21, 23(25)24
    14(26)14[15],14(27@16)26
    16(28)16[17], 27(29)16
    17(30)28, 2(31)4

    I'm not sure -- I don't really have a handle on the math and terminology. I do know that just playing this game at this level is changing how I play.

    ReplyDelete
  7. CarrollDecember 8, 2009 at 2:08 AM

    Reading "Socratic Tutorials" is both entertaining and instructive... http://www.wgosa.org/soctut1.htm

    17+ (Peltier*-RichardsFink)
    1(18)1[2-9], 1(19)18[10-13]
    10(20)19, 13(21)20
    10(22)10[11,12], 22(23)13
    13(24)21, 23(25)24
    14(26)14[15],14(27@16)26
    16(28)16[17], 27(29)16
    17(30)28, 2(31)4 --> shouldn't this be 3 ?
    7(32)7[8,9] --> then I should rewrite it 4(32)4[5,6] if spots are born in ascending order...
    Feel free to number them in the most convenient way for your drawing.

    ReplyDelete

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