(;GM[1]FF[4]SZ[19]
GN[Proof 2]
PC[https://senseis.xmp.net/?BeginnerExercise212/Solution]AP[GoWiki:2009]
DT[2024-09-17]
C[Diagram from https://senseis.xmp.net/?BeginnerExercise212/Solution

Proof 2]
PL[B]

AB[dq][eq][fq][gq][hq][ar][cr][dr][hr][ir][bs][ds][is]
AW[co][dp][ep][fp][gp][hp][bq][cq][iq][jq][br][fr][gr][jr][gs][hs][js]
LB[er:a]

;B[fs]C[B1]MN[1]
;W[es]C[W2]MN[2]

;LB[er:a]
)
