(;
GM[1]
SZ[19]
AW[de][cf][dg][ck][jq][pq][np][nn][pl][pc][qd][kc]
AB[dc][fc][cd][ce][cp][eq][om][pn][qo][rq][qi][qf]
C[Problem 106. Black to play.  

White has just extended with the marked stone. What should Black do ?  

[You will find a supplement to this Problem Diagram as "Problem 145"] ]
;B[oj]
TE[2]
C[Correct Answer.  

The knight's move of Black 1 secures a large territory on the right side for Black. The white stone there can't escape. ]
;W[cn]
C[Even if White plays at A next, Black still has the initiative. <= ]
)
)