First note, I posted the solutions to the previous problems in the last post, so feel free to look at them. As for today, I ended up t-1st at the Hugh Myers tournament, with 3/4. Now to the cool part. I played one of the most incredible combinations of my chess career in the last round. I am going to give you the position tonight and will post the solution on Monday night to give you some time to look it over.
Black to move and get a string of !!s:

Solution:
Are you sure you can handle this?
Really?
Ok, I warned you.
1. ...Nh5!!
a. 2. Rxe5?? Rf1# 0-1
b. 2. Rxh5?? Rf1# 0-1
c. 2. Qe1 Rxf5! 3. exf5 Nf3+!! loses K or Q.
d. 2. Qe3 Bc5! winning.
e. 2. Rxf8+ Rxf8 doesn't solve anything either.
f. 2. Qf2 Rxf5! 3. exf5 Ng4! also winning shortly.
g. 2. Qxe5 Qxe5! and the queen cannot be recaptured due to Rf1#.
2. Qg5 Rxf5!!
a. 3. Qxf5 Rf8! winning easily.
b. 3. Qxe7?? Rf1#
3. exf5 Nf3+!!
a. 4. Kf2 Nxg5 winning
b. 4. Kh1 Nxg5 also winning
4. gxf3 Qe1+! 5. Kg2 Qf1#
I actually missed the mate and played 5. ...Bf1+, which is also entirely resignable for white.