(;GM[1]FF[4]SZ[19]
GN[Exchange in the opening]
PC[http://senseis.xmp.net/?BQM557]AP[GoWiki:2009]
DT[2012-01-06]
C[Diagram from http://senseis.xmp.net/?BQM557

Exchange in the opening]
PL[W]

AB[pd][dp]

;W[pp]C[W1]MN[1]
;B[dd]C[B2]MN[2]
;W[fq]C[W3]MN[3]
;B[cn]C[B4]MN[4]
;W[qf]C[W5]MN[5]
;B[hq]C[B6]MN[6]
;W[nd]C[W7]MN[7]
;B[oe]C[B8]MN[8]
;W[qc]C[W9]MN[9]
;B[fp]C[B10]MN[10]

;
)
