(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]RU[Japanese]SZ[19]KM[0.00]PW[CHH2]
;B[pd];W[dd];B[fc];W[hc];B[dp];W[qp];B[cf];W[fd];B[cc];W[cd]
;B[dc];W[ed];B[fb];W[bd];B[bc];W[gd];B[dj];W[oq];B[qj];W[ql]
;B[oj]LB[nc:E][qf:D][ch:A][ol:C][fq:B]C[DW - This is the 2nd Installment of considering the position. 

How to use a wall ?  I suspect most of our readers would prefer to play black in this position because it is not clear how to use the 7 stone wall in  the top left. In this series I have cherry picked positions which are interesting to me, but try to pick out represenative examples of the correct direction of play

How should white play?   

CHH Black 17 is a declaration of war 18-21 are preparation for the battle. 21 has a secret aim to attack the 7 stones on the top left. 

]
)