170-Mate in two SOLUTION.

Solution: 1. Ka4! waiting
 1... Kc4 2. Be6#
A flight giving key..!

169-Mate in two SOLUTION.

Solution: 1. Bf7! threat [2. Sc4#]
 1... Rd4 2. cxd4#
 1... Rd3+ 2. Sxd3#

168-Mate in two problem Solution

Solution: 1. Bb3-g8! threat 2. Rh6-h7#
 1... Rf8xg8/f5+ 2. Sh4(x)f5#
 1... Rf8-f7 2. Qa2xf7#

167-mate in two Solution.

Solution: 1. Bg6-d3! waiting
 1... Bf8 ad lib 2. Sc8(x)e7#
 1... Bf8xd6 2. c5xd6#
 1... Rb7-a7+/b8 2. Sc8(x)a7#
 1... Rb7-c7 2. Bd3xb5#
 1... Rb7-b6+ 2. c5xb6#

166- SELFMATE in three SOLUTION.

Solution: 1. Ra1-c1! waiting
 1... c3-c2 2. Qh8-a1 waiting
    2... c4-c3 3. Rc1xe1 ... f2xe1=Q, f2xe1=R, f2xe1=B, f2xe1=S#

 White forces Black to give mate in 3 moves.

165-Mate in Two Solution

Solution: 1. Bh2-c7! threat 2. Bc7xb6#
 1... Rd7xc7 [b]  2. Se1-d3 [A] #
 1... Rd7-d6 2. Bc7xd6#
 1... Sb1-c3+ 2. Qb3xc3#
 A decoy problem