(;GM[1]FF[4]SZ[19]
GN[Only endgame gain]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem316/Solution]AP[GoWiki:2009]
DT[2023-02-10]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem316/Solution

Only endgame gain]
PL[W]

AB[be][af][bg][cg][dg][eg][ah][bh][eh][bi][di][ei][bj][cj][dj][ej][ak][al][bl][bm][bn]
AW[bc][dc][cd][bf][cf][df][ef][fg][fh][fi][fj][bk][ck][dk][ek][cl][cm][dm][an][cn][bo][co]

;W[aj]C[W11]MN[11]
;B[ch]C[B12]MN[12]

;
)
