(;TR[pr]LB[or:a]LB[qm:b]AB[lp][mo][no][nr][oo][op][oq][pp][qo][rm][rn][ro]AW[kq][lq][mp][mq][mr][np][nq][pn][po][pr][ql][qn][qp][qq]C[FORCE]AP[goproblems autoextractor]PW[twoeye]PB[ISS]PC[The KGS Go Server at http://www.gokgs.com/]DT[2010-02-07]PL[B] (;B[or]TR[oo]TR[mo]TR[oq]TR[pp]TR[no]TR[op]SQ[qq]SQ[qp]C[Playing here is worth about 10 points over playing away in an empty corner. The stones marked with a triangle are stronger. The stones marked with a square are dead. White would have played at the same place if you played away. RIGHT]) (;B[qm];W[or]TR[oo]TR[mo]TR[oq]TR[pp]TR[no]TR[op]SQ[qq]SQ[qp]C[This loses about 9 points. The stones marked with a triangle are weaker. The stones marked with a square are alive. ]))