(;GM[1]FF[4]SZ[19]
GN[Thickness]
PC[http://senseis.xmp.net/?ThicknessExample7]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?ThicknessExample7

Thickness]
PL[B]

AB[gb][fc][jc][qc][cd][gd][ce][qe][cf][df][gf][hf][bg][eg][ch][ci][qo][qp][fq][nq][pq]
AW[cc][dc][ec][lc][oc][fd][de][ee][bf][ff][cg][dg][gg][bh][dh][qj][ck][pn][qn][po][dp]
CR[bg]

;B[ag]C[B1]MN[1]
;W[af]C[W2]MN[2]
;B[ei]C[B3]MN[3]
;W[ef]C[W4]MN[4]
;B[di]C[B5]MN[5]
;W[ah]C[W6]MN[6]
;B[eh]C[B9]MN[9]

;CR[bg]
)
