(;GM[1]FF[4]SZ[19]
GN[the threat to escape]
PC[http://senseis.xmp.net/?BQM251]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BQM251

the threat to escape]
PL[B]

AB[op][pp][qp][rp][pq][or][rr]
AW[on][qn][no][ro][np][nq][pr][qr][sr]
CR[sr]
LB[rn:d][qs:c]

;B[nr]C[B1]MN[1]
;W[sp]C[W2]MN[2]
;B[rq]C[B3]MN[3]
;W[sq]C[W4]MN[4]
;B[lq]C[B5]MN[5]

;CR[sr]
LB[rn:d][qs:c]
)
