Patrol chess problems 3

Announcement of 4th TT CCM reminded me of one old file, sent me by Theodor Tauber, containing 3 twomovers by Shlomo Seider in Patrol chess. Although thematical mates don't constitute high ratio among all mates in them, their content can give some idea of possibilities offered by Patrol chess in general and perhaps they can inspire also composition of something that is suitable for our 4th TT CCM.
Theodor Tauber
Shlomo Seider
Probleemblad 1980

1.cxb7! th. 2.Rxc6#,
1...fxe6, fxg6, f6, f5
2.Rxa3#, Qxd6#, b8R(Q)#, Bxd2#

Pickaninny, where first two variations make dual avoidance pair by patrolling appropriate black pieces and black error lies in opening f3-f8, while other two variations close lines g5-d8 and d5-g5 respectively.









#2 (12+12)
Patrol chess
Shlomo Seider
feenschach 1981

Set play:
1...Bxd3 2.Qd4#
1...bxa2 2.Qc4#

1.Bc3! th. 2.Qxa5#
1...Bxd3 2.Qc4#
1...bxa2 2.Qd4#

Reciprocal change based on white bivalve in the key - opens h6-a6 and closes a3-d3









#2 (12+10)
Patrol chess
Shlomo Seider
5th Prize Probleemblad 1986

1.Kd7? th. 2.Gxe1#, 1...Gd6! 2.Gxe1+? Gxd1!!
1.Kxb7? th. 2.Gxa3#, 1...Gb6! 2.Gxa3+? Gxb2!!

1.Kxc7! zz,
1...Gd6 2.Gxe1#
1...Gb6 2.Gxa3#
(1...h2/g1~ 2.Gf1#, 1...b6/b5 2.Gxa3#, 1...a2 2.Ga3#)

Patrol-typical mechanism for Dombrovskis theme.









#2 (10+8)
Patrol chess
4+1 grasshopper

Comments to Juraj Lörinc.
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