Examples for Bedrich Formánek 70 JT - 3


The tourney is announced for twomovers with very few fairy units. Announcement of the tourney see here.

Thomas R. Dawson
Fairy Chess Review 1944

1.Sc1! th. 2.Sd3#
1...Gd4 2.Qe2#
1...d4 2.Qxb5#
1...Sbd4 2.Qb8#
1...Sfd4 2.Qxh2#

Rich and interesting strategy. All black moves defend by unpin of bR (pinned by wQ), but the error is just opposite - after departue of wQ rook appears pinned by wG. The idea is even deeper. Any black move to d4 defends and also allows other mate Qe2#. But black can precise the play by moving specific pieces to d4 - 2x knight and 1x pawn. They defend also the secondary mate Qe2# - it is arrival correction. All this moves have the same (or strictly said similar) second error as well - they all open white line, allowinf other wQ mates.









#2 (7+8)
1+1 grasshopper

Zdenek Mach
Springaren 1951

1.Be4! th. 2.Ee6#
1...Sxe4 2.Ed5#
1...Kxd6 2.Qd5#

Three model mates make use of Sc7 pin.









#2 (5+5)
empress d6

Daniel Joffart
Probleme-supplement 1969

1...Kc2 2.Qb3#
1...Kxe4 2.Qd5#
1...Kxe2 2.Qf1#

1.Qf1! zz
1...Kc2 2.GNd5#
1...Kxe4 2.GNb3#
1...Kc4 2.GNf5#

Three queen mates are after give-and-take key changed to three gnu mates from gnu-queen battery.









#2 (10+8)
gnu e2

Petko A. Petkov
Schach-Echo 1981

1.Nd5? zz
1...S~ 2.Nb1#
1...Sxf2! 2.Nc7#
1...Sxg3! 2.Nb6#
1...Sc3! 2.Nxc3#
1...Sg5!

1.Nc6! zz
1...S~ 2.Ne5#
1...Sxf2! 2.Na5#
1...Sxg3! 2.Nd8#

In both try and solution any bS move allows double-check mate. Black thus tries to provide flights to own king by captures of guarding pawns, but this corrections selfpin bS and allow mates reguarding new flights.









#2 (11+4)
nightrider e7

Petko A. Petkov
Special Prize Bulgary-1300 JT 1983

1.Sc~? th. 2.Qc3#
1...Ne5!

1.Se4? th. 2.Qc3#
1...Ne5 2.Sd6#
1...Re5!

1.Scd5? th. 2.Qc3#
1...Ne5 2.Ne8#
1...Be5!

1.Sca2! th. 2.Qc3#
1...Ne5 2.Ne8#
1...Re5 2.Bxd3#
1...Be5 2.Qe6#

This problem shows correction on the other side - white correction. Any move of wSc3 threats Qd4#, but Black can defend by moves to e5, making threat move impossible by gate closing. That's why White must provide mate for 1...Ne5 and then he must take care not to remove mates provided for 1...Re5 and 1...Be5. Nice example of cyclic Grimshaw.









#2 (7+16)
1+1 nightrider

Torsten Linß
Manfred Rittirsch

Probleemblad 1990

1.Ne8? th. 2.Nb2#
1...Sf3 2.Sxg6#
1...c4 2.Qe3#
1...Bxe8 2.Se6#
1...Bc3 2.hxg3#
1...Se5!

1.Nd2! th. 2.Nb6#
1...Sf3 2.Qxf3#
1...c4 2.Be3#
1...Be6 2.Sxe6#
1...Bxd2 2.hxg3#

Changed mates. Defences 1...c4 and 1...Sf3 have the same defence motive in both phases despite different threats: 1...c4 closes gate for mating nightrider, 1...Sf3 closes line e2-g4, unguarding actually or in anticipation g4.









#2 (8+15)
nightrider f6

Comments to Juraj Lörinc.
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