(;AW[ir][jr][kr][mr][nr][or][pr][rr][sr][is][ls][qs][rs]AB[hq][iq][jq][kq][lq][mq][nq][oq][pq][qq][rq][sq][hr][lr][qr][hs]LB[ks:A] C[White just failed to play at A, assuming he would lose only the 4 stones on the left. Show him otherwise and kill the whole corner.] (;B[ps]CR[ps] ;W[os]CR[os] ;B[ms]CR[ms] ;W[ns]CR[ns] ;B[ks]CR[ks]C[RIGHT Well done!]) (;B[ms]CR[ms] ;W[ps]CR[ps] (;B[ns]CR[ns] ;W[os]CR[os] ;B[ms]CR[ms] ;W[ns]CR[ns] ;B[ks]CR[ks]C[RIGHT Well done!]) (;B[ks]CR[ks] ;W[ns]CR[ns])) (;B[ks]CR[ks] ;W[ms]CR[ms] ;B[ps]CR[ps] ;W[os]CR[os]) (;B[js]CR[js] ;W[ks]CR[ks]) (;B[ns]CR[ns] ;W[ks]CR[ks]) (;B[os]CR[os] ;W[ks]CR[ks]))