Black to answer the monkey jump! Do not play some risky ko please (if you don't want to get this wrong:-) )
Wow my 100th problem, what to say here.... I still remember my first one, made while learning deutsch vocabulary.. my first strange, my most discutable (black to draw a house :) ), my first 6d, my best (Go go dream I think :) ), my first bad I had to deactivate... many problems, every made by myself, mostly after getting out of bed or observing or playing some game. Some problems I made might not be very cool, but I had fun while making all my problems and I hope you had fun while solving some of them.
I love this site and am looking forward to my 1000th problem in something like 20 years! :-)
(;AB[qf]AB[qe]AB[pd]AB[od]AW[pe]AW[pg]AW[qg]AW[rg]AW[oe]AW[og]AB[nd]AB[nc]AB[mc]AB[mb]AW[sd]AB[ne]AW[of]AW[nf]TR[mb]C[Hint: The marked stone might (yes it is) be important in this situation. Do not care for sente much.]AP[goproblems]
(;B[rd];W[se]
(;B[sf];W[rf];B[sc];W[re];B[rc]C[A bit worse than the solution])
(;B[sc];W[rc]
(;B[sf];W[sb];B[re];W[sc];B[rf];W[qc];B[qd];W[ra]C[A little disaster])
(;B[sb]
(;W[re]
(;B[rf];W[qd];B[sf]C[Edhelka solution with the T18 tesuji, cool!CHOICERIGHT])
(;B[qd];W[rf];B[rb]C[You made a slight mistake...]))
(;W[rf];B[re];W[sf];B[rb]C[Edhelka found this solution - very nice work!RIGHT])))
(;B[rc];W[sc];B[sb];W[rf];B[re];W[sf];B[rb]C[Close, but one point worse than the solution]))
(;B[sf];W[rc]
(;B[rd];W[re];B[qd];W[rf])
(;B[qc];W[rf]))
(;B[se];W[re];B[rd];W[sf];B[sc];W[rc]C[You could avoid ko])
(;B[re]
(;W[rc]C[CHOICE]
(;B[rd];W[qc];B[qd]
(;W[pb]C[CHOICE]
(;B[rb];W[ra];B[sb];W[qb];B[pa]C[Good, you defended the corner!RIGHT])
(;B[sb];W[sc];B[se];W[rb])
(;B[ra];W[rb];B[qa];W[sc];B[se];W[sa];B[sb];W[pa];B[sa];W[qb];B[ra];W[sa];B[sb];W[qa])
(;B[qa];W[ra];B[rb];W[sb]C[Only ko])
(;B[qb];W[rb])
(;B[oa];W[sc];B[se];W[rb]
(;B[pa];W[qa]
(;B[pc];W[sa])
(;B[sa];W[pc]))
(;B[qa];W[pa];B[ra];W[sa];B[sb];W[qb]))
(;B[sc];W[sb];B[ra];W[qa];B[rb];W[ob];B[oa]C[Ouha :-)RIGHT]))
(;W[ob];B[pc];W[pb];B[rb];W[qb];B[ra]C[White is doomedRIGHT])
(;W[ra];B[pb]C[RIGHT]))
(;B[qc];W[se]
(;B[sf];W[rf];B[rb];W[sb];B[rd];W[sg]C[Still there is a huge ko])
(;B[rb];W[sb];B[rd];W[sf]C[Black needs to win the ko to get suitable result]))
(;B[se];W[qc];B[qd];W[ob];B[ra];W[qa];B[qb];W[rb];B[pa];W[pb];B[qa];W[oa];B[rd];W[sa]))
(;W[se];B[sf]
(;W[rf];B[sc];W[rd];B[rc];W[sg];B[qd];W[sf]C[The ideal solution for both! (white could also chose to keep sente by direct capturing the stone instead of playing S16)RIGHT])
(;W[rd];B[qd];W[rc];B[rf];W[qb];B[sb];W[ob];B[pa];W[oa];B[pb];W[pc];B[qc]
(;W[qa];B[rb]C[RIGHT])
(;W[rb];B[oc];W[qa];B[sa];W[pc];B[pb]C[RIGHT])))
(;W[rd];B[qd]
(;W[se];B[sf];W[rf];B[rc];W[sg];B[sc];W[sf]C[RIGHT])
(;W[rc];B[se];W[qb];B[sb];W[ob];B[pa]
(;W[oa];B[pb];W[pc];B[qc];W[rb];B[oc];W[qa];B[sa];W[pc];B[pb]C[RIGHT])
(;W[pb];B[oa];W[na];B[nb];W[qa];B[oa]C[RIGHT])))
(;W[qc]
(;B[qd];W[rc];B[rd]
(;W[pb]C[CHOICE]
(;B[rb];W[ra];B[sb];W[qb];B[pa]C[Good, you defended the corner!RIGHT])
(;B[sb];W[sc];B[se];W[rb])
(;B[ra];W[rb];B[qa];W[sc];B[se];W[sa];B[sb];W[pa];B[sa];W[qb];B[ra];W[sa];B[sb];W[qa])
(;B[qa];W[ra];B[rb];W[sb]C[Only ko])
(;B[qb];W[rb])
(;B[oa];W[sc];B[se];W[rb]
(;B[pa];W[qa]
(;B[pc];W[sa])
(;B[sa];W[pc]))
(;B[qa];W[pa];B[ra];W[sa];B[sb];W[qb]))
(;B[sc];W[sb];B[ra];W[qa];B[rb];W[ob];B[oa]C[Ouha :-)RIGHT]))
(;W[ob];B[pc];W[pb];B[rb];W[qb];B[ra]C[White is doomedRIGHT])
(;W[ra];B[pb]C[RIGHT]))
(;B[rd];W[rc];B[qd]
(;W[pb]C[CHOICE]
(;B[rb];W[ra];B[sb];W[qb];B[pa]C[Good, you defended the corner!RIGHT])
(;B[sb];W[sc];B[se];W[rb])
(;B[ra];W[rb];B[qa];W[sc];B[se];W[sa];B[sb];W[pa];B[sa];W[qb];B[ra];W[sa];B[sb];W[qa])
(;B[qa];W[ra];B[rb];W[sb]C[Only ko])
(;B[qb];W[rb])
(;B[oa];W[sc];B[se];W[rb]
(;B[pa];W[qa]
(;B[pc];W[sa])
(;B[sa];W[pc]))
(;B[qa];W[pa];B[ra];W[sa];B[sb];W[qb]))
(;B[sc];W[sb];B[ra];W[qa];B[rb];W[ob];B[oa]C[Ouha :-)RIGHT]))
(;W[ob];B[pc];W[pb];B[rb];W[qb];B[ra]C[White is doomedRIGHT])
(;W[ra];B[pb]C[RIGHT]))))
(;B[rf];W[sf]C[This didnt help you])
(;B[rc];W[sc]
(;B[se];W[re];B[rd];W[sf];B[sb];W[se];B[rf];W[sg];B[rb]C[Two points behind the solution])
(;B[sb];W[rd];B[qd];W[rb];B[qc];W[sf]C[:-(])
(;B[rd];W[se];B[sb];W[rf];B[re];W[sf];B[rb]C[Close, but one point worse than the solution]))
(;B[qd];W[rc]C[White eats the corner])
(;B[qc];W[sb]C[Big loss for black])
(;B[sc];W[rd]
(;B[qd];W[rc]C[Oucha])
(;B[rc];W[qd];B[qc];W[sf]C[You could do better than this]))
(;B[ma];W[rc];B[qd];W[qb]C[Coola! You are about to find the hidden bonus solution. Play one move on the Q line and if you are lucky enough...];B[pc]C[Hullaa, congrats! If you found this on your own, you are the true go master or absolute beginner... the differences between these two things are sometimes incredibly small :-)RIGHT]AB[oc]AB[pb]AB[pa]AB[oa]AB[na]AB[ob]AB[nb]AB[md]AB[me]AB[qc]AB[qa]AB[ra]AB[sa]AB[sb]AW[rb]AW[sc]AW[rd]AW[re]AW[se]AW[rf]AW[sf]AW[pf]AW[sg]AW[ng]AW[mg]AB[mf]))