Locust-specific batteries 3

This is the third special example file for the 22nd TT CCM C 11.11.2007. After inspecting batteries consisting of locust pairs, here we have batteries with knights.
Harry Fougiaxis
4th HM 1st TT Phénix 1991

1.Bb7 Se3+ 2.Qg4 Sgf1#

1.Rb3 Sf5+ 2.Qg3 Sgh6#

The first black move blocks square avoiding capture of white locust. Otherwise there is quite standard strategy in the diagonal-orthogonal echo.

h#2 (6+10)
2+4 locust

Torsten Linß
2nd HM 1st TT Phénix 1991

a) 1.cxd5 Sf4+ 2.Sf5 Sxg6#

b) 1.Rxe5 Sf5+ 2.Sf4 Se7#

There is prepared "normal" battery with knight as a firing piece. When it opens, black knight selfpins behind, but then the newly created "locust-typical" battery mates from behind. Again diagonal-orthogonal echo.

h#2 (8+8)
4+0 locust
b) d3 «-» d4

Harry Fougiaxis
1st Prize feenschach 1991

1.Sfe5 Sd3+ 2.Qb4 Sbc1#

1.Sge5 Sc5+ 2.Qb3 Sba6#

Do you see similarities between the first problem and this one? Still, there is some added strategy here.

h#2 (7+11)
2+5 locust

Petko A. Petkov
dedicated to Torsten Linß
feenschach 2001

1.Gh5! zz
1...Gd4 2.Sg3+ Kd6 3.Sf5+ nLxf5-g4#
1...Gf6 2.Sg5+ Kd6 3.Sf7+ nLxf7-g6#
1...Gb6 2.Sc5+ Kd6 3.Sb7+ nLxb7-a6#
1...b4 2.Sd2+ Kd6 3.Sc4+ nLxc4-c3#
1...a3 2.Sec3+ Kd6 3.Sxb5+ nLxb5-a4#

Double use of locust-typical battery. It is fired in the second white move as a Siers battery, giving flight at d6 and then in the mating black move. Good construction.

s#3 (6+5+3)
1+2 grasshopper, 3 neutral locusts

Chris J. Feather
Broodings 18 - 2004

1.Kxe2(Sb1) Kh7 2.Kf1 Sa3+ 3.Lxa3-a2(Sg1) Sf3+ 4.Lxf3-g2(Sb1) Sd2+ 5.Lxd2-e2(Sg1) Sh3#

1.Kg2 Sg1 2.Kf1 Sf3+ 3.Lxf3-g2(Sb1) Sa3+ 4.Lxa3-a2(Sg1) Se2+ 5.Lxe2-f2(Sb1) Sc3#

Only one mate here is thematical (Sh3#), but the interconnection between phases is quite strong. The rebirths of knight are skillfully used for the precising order of moves, switching the action from one flank to the other and back.

h#5 (3+3)
1+2 locust

Comments to Juraj Lörinc.
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