[gnugo-devel] snapbacks

[bump]

Recently I've seen GNU Go take snapbacks on a number
of occasions.

Here's an example. Current CVS plays W at Q7. This
is a contrived example but this sort of thing does
happen in actual play.

Move generation values P2 to 9.24
  Q7: owl attack/defend for R6
  Q7: owl attack/defend for S8
  Q7: owl attack/defend for S6
  Q7:   2.33 (followup) - threatens to capture Q6
  Q7: not a safe move
  Q7: 17.01 - change in territory
  Q7:   7.20 - S8 strategic value already counted - A.
  Q7:   2.80 - R6 strategic value already counted - A.
  Q7:   3.60 - S6 strategic value already counted - A.
  Q7: 3.17 - strategic effect on Q5
  Q7:   13.40 - total followup value, added 11.07 as territorial followup
  Q7: 6.70 - added due to followup (13.40) and reverse followup values (0.00)
  Q7: 1.24 - shape (shape values +1.00(1) -0.00(0), shape factor 1.050)
  Q7: 1.09 - connects strings (connect value 10, shape factor 0.219)

Dan


(;GM[1]FF[3]
RU[Chinese]SZ[19]HA[0]KM[5.5]
PW[White]
PB[Black]
PL[White]
GN[White (W) vs. Black (B)]
DT[2006-01-27]
SY[Cgoban 1.9.12]TM[30:00(5x1:00)];
AW[ol][pl][rl][om][rm][on][qn][po][ro][pp][pq]
AB[cc][qc][dd][gd][jd][md][pd][dg][pg][dj][jj][nk][ok][pk][rk][nl][ql][dm][nm][qm][nn][pn][rn][no][oo][dp][gp][jp][mp][cq][nq]
)