(;FF[4]GM[1]SZ[19]ST[2]CA[UTF-8]AW[dr][cq][bp][eq][fq][cr]AB[co][er][dq][dp][bo][ep]C[Black to play.]
(;B[fp];W[gq];B[gp]
;W[hq]C[White is delighted.])
(;B[gq]C[Correct]
(;W[fr];B[fp])
(;W[fp]
;B[fr]C[White mistake.])))
