120-Mate in 3 SOLUTION.

Solution: 1. Sf5! [2. Bd6#]
 1. ... Bxf5 2. Rxf5 waiting move
    2. ... Kd4 3. Bf2#

119-Selfmate in 3 moves Solution

Solution: 1. Be6! [2. Sh8 [3. Bb3 ... Bxb3#]
    2. ... Bf7 3. Bb3 ... Bxb3#
    2. ... b4 3. Bb3 ... Bxb3#]
 1. ... b4 2. Sd8 [3. Bb3 ... Bxb3#]
    2. ... Bf7 3. Bb3 ... Bxb3#
    2. ... Bxe6+ 3. Sxe6 ... b3#
    2. ... b3+ 3. Bxb3 ... Bxb3#
 1. ... b4 2. Sh8 [3. Bb3 ... Bxb3#]
    2. ... Bf7 3. Bb3 ... Bxb3#
    2. ... b3+ 3. Bxb3 ... Bxb3#
  SELFMATE is a type of problem where white forces black to mate him against black's will within a specified number of moves.