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] ) _______________________________________________ gnugo-devel mailing list [email protected] http://lists.gnu.org/mailman/listinfo/gnugo-devel
