(;AW[rb]AW[qc]AW[pc]AW[oc]AW[nc]AB[qb]AB[pb]AB[ob]AB[nb]AB[mc]AB[md]AB[ld]AB[nd]AB[qd]AB[pe]AW[mb]AW[la]AW[kb]AW[kc]AW[lc]LB[rb:A]C[White just played a tricky hane at A. How to respond?]AP[goproblems] (;B[rc];W[rd] (;B[sc];W[sd] (;B[re];W[sb] (;B[rc];W[ra] (;B[pd];W[sc] (;B[od];W[rc] (;B[se];W[na];B[qa]C[Correct! Black is one liberty aheadRIGHT]) (;B[qa];W[na];B[se]C[Correct! Black is one liberty aheadRIGHT]) (;B[na];W[qa];B[se];W[pa])) (;B[qa]C[RIGHT]) (;B[na];W[qa];B[od];W[rc];B[se];W[pa])) (;B[od];W[sc] (;B[pd];W[rc] (;B[se];W[na];B[qa]C[Correct! Black is one liberty aheadRIGHT]) (;B[qa];W[na];B[se]C[Correct! Black is one liberty aheadRIGHT]) (;B[na];W[qa];B[se];W[pa])) (;B[qa]C[RIGHT]) (;B[se]C[RIGHT])) (;B[qa];W[na] (;B[pd]C[RIGHT]) (;B[od]C[RIGHT])) (;B[se];W[na] (;B[od];W[oa];B[pd]C[RIGHT]) (;B[pd];W[oa];B[od]C[RIGHT]) (;B[sc];W[oa];B[pd];W[pa];B[od];W[qa]))) (;B[pd];W[rc])) (;B[pd];W[sb] (;B[rc]C[CHOICE]) (;B[od];W[rc]C[White wins the capture race])) (;B[od];W[sb];B[pd];W[rc]C[White wins the capture race])) (;B[ra];W[sc];B[re];W[na]) (;B[re];W[sc])) (;B[pd];W[rc]C[White has more liberties then black and wins the capturing race]) (;B[od];W[rc]C[White has more liberties then black and wins the capturing race]) (;B[rd];W[rc]) (;B[ra];W[rc]))