122-Problem Solution

Solution: 1. Bh3-e6! threat 2. Sf2-e4, Sa1-b3#
 1. ... Re8-b8, Bg8xe6 2. Sf2-e4#
 1. ... Re8xe6, Bg8-h7 2. Sa1-b3#

121-Problem mate in 2 solution.

Solution: 1. Bg1-f2! waiting
 1. ... Sf8 ad lib 2. Sg7(x)e6#
 1. ... Sf5 ad lib 2. e3-e4#
 1. ... Sf5-d4 2. e3xd4#
 1. ... Sf5xe3 2. Bf2xe3#

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.

118-Solution problem mate in two

Solution: 1. Rf3-f6! threat 2. Rf6-c6#
 1. ... Re8-c8, Bg8-e6 2. Sg6xe5#
 1. ... Re8-e6, Bg8-d5 2. Bh1(x)d5#

 Grimshaw is the name of this theme in which two pieces of the same colour (usually a rook and a bishop) interfere with each others line of action, by playing in turn to a square where the two lines intersect.

117-Problem Solution

Solution: 1. Kd1-c2! waiting
 1. ... Kd5-c4 2. Bg6-f7#
 1. ... Kd5-c6 2. Bg6-e4#
 1. ... Kd5-e6 2. Se2-f4#
 In this problem Black king has three flying squares.

116-Problem Solution

Solution: 1. Kb2-c2! waiting
 1. ... e4-e3 2. d2xe3+
    2. ... Rd3-c3+ 3. Be1xc3#
    2. ... Rd3 ad lib 3. Be1xd2#
 1. ... Rd3xb3 2. d2-d3+
    2. ... Rb3-c3+ 3. Be1xc3#
Crosschecks are the theme here.