(;AB[hj]AB[hk]AB[hl]AB[il]AB[jl]AB[jk]AB[jj]AB[ii]AB[ih]AB[ig]AB[jg]AB[kg]AB[kh]AB[ki]AW[gl]AW[gk]AW[gj]AW[hm]AW[im]AW[jm]AW[kl]AW[kk]AW[kj]AW[hi]AW[hh]AW[hg]AW[if]AW[jf]AW[kf]AW[lg]AW[lh]AW[li]AW[lm]AW[gf]AW[me]C[How many ko threats does white have here?FORCE]LB[nj:1]LB[ni:0]LB[nk:2]AP[goproblems] (;W[ni];B[hd]C[Wrong. White has something here. Look at the navigate solution.]) (;W[nk];B[hd]C[Show them to me.] (;W[ji];B[ij]C[The first is correct, but there isn't another one. Wrong.]) (;W[ij];B[ji]C[The first is correct, but there isn't another one. Wrong.])) (;W[nj];B[hd]C[Play the ko threat, please.] (;W[ji];B[id]C[If black ignores it, what do you do?];W[ij];B[ik];W[ij]C[Nice!This is called double snapback. RIGHT]) (;W[ij];B[id]C[If black ignores it, what do you do?];W[ji];B[ik];W[ij]C[Nice!This is called double snapback. RIGHT])))