(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[White]PB[Black]AW[am][bm][bn][cn][co][eo][cp][dp][fp][cq][hq][dr][er]AB[an][ao][bo][bp][bq][dq][br][cr][ds]C[Black to play.]
(;B[es]
;W[fs]
(;B[cs]
;W[fr]C[Incorrect. Black can do better.])
(;B[fr]
;W[cs]C[Incorrect.])
(;B[eq]
;W[cs]C[Incorrect.]))
(;B[fs]
;W[es]C[Incorrect.])
(;B[fr]
;W[eq]
;B[es]C[Correct! Good endgame.]))
