(;GM[1]FF[4]SZ[19]
GN[White can bolt the door around 'a' or 'b']
PC[http://senseis.xmp.net/?BoltTheDoorToCatchTheThief]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BoltTheDoorToCatchTheThief

White can bolt the door around 'a' or 'b']
PL[B]

AB[cc][fc][mc][cd][fd][jd][pd][qd][bm][dm][qm][an][cn][en][bo][do][bp][pp][bq][qq][cr]
AW[dd][cf][of][qf][di][qj][bl][cl][cm][fm][co][go][no][cp][dp][ip][cq][fq][nq][pr]
LB[jj:b][ml:a][jp:c]

;B[jq]C[B1]MN[1]
;W[nl]C[W2]MN[2]
;B[mp]C[B3]MN[3]
;W[np]C[W4]MN[4]

;LB[jj:b][ml:a][jp:c]
)
