Springaren Summer Tourney C 15.9.2004

Better late than never. I was quite busy recently and thus I faild to announce one of my favourite tourneys in time. Nevertheless, there are at least 2 weeks left...

Theme: Any kind of problems using pawn battery.

Judge: not known yet.

Entries should be sent before September 15th 2004 to the following adress:

Christer Jonsson
Stävholmsgränd 129
SE-127 49 Skärholmen
Sweden.

Examples below - some problems published on CCM for a longer time and some fresh threemovers for the inspiration.

Orthodox problems
- #2 by Stefan Blunar - pawn battery in threats is used for demonstration of rare defence motive
- #2 by Cornelis Groeneveld - pawn battery mates are changed in the other phase
- #2 by Jozef Lozek - altogether 4 pawn battery mates in 2 phases
- #3 by Robin C. O. Matthews & Robert Burger - 2+2 pawn battery mates in echo diagonal-orthogonal
- h#2 by Michal Dragoun & Juraj Lörinc - pawn batteries helped this problem into the award
- h#2 by Mircea Manolescu - pawn batteries are formed during the play
- h#3 by Ladislav Salai sr. - third battery consisting of 3 blocked pawns needs meat to be activated
- h#4 by Chris J. Feather - excellent example of pawn battery formation by critical move of rear piece
- s#2 by Karol Mlynka - halfbattery formed from 2 promoting pawns
- r#2 by Brian Chamberlain - black pawn battery checks wK in the 1st as well as in the 2nd move
- ser-h#7 by Juraj Lörinc - 3 out of 4 pawns on line should be eaten before batteries can be fired
Fairy problems
- fairy #2 by Juraj Lörinc - pawn third battery is fired in 2 moves thanks to the use of locusts
- fairy #2 by Juraj Lörinc - 2 pawn batteries on the same line are possible with lions
- fairy s#2 by Juraj Lörinc - battery pawn promotes to grasshopper twice
- fairy r#2 by James Quah - again promoting pawn battery, it is aimed at the mating bQ that is activated
- fairy r#2 by Juraj Lörinc - pawn moves unpin white bishop and after his move there are mating battery doublechecks
- fairy ser-h#8 by Juraj Lörinc & Jozef Barani - two pawn batteries on the same line, in the opposite directions

Joza Tucakov 3rd Place Liga Problemista 1997	1.Rh4! zz 1...B~ 2.f3+ e3 3.g5# 1...Bh5! 2.f3+ e3 3.gxh5# 1...Bf5! 2.f3+ e3 3.gxf5# 1...e3 2.g5+ Be4 3.fxe3# 1...c3 2.e3+ Kc4, Kd3 3.Se5, Bxb5# 1...Ra5 2.g5 th. 3.f3#, 2...c3 3.bxa5# 1...Rc5 2.g5 th. 3.f3#, 2...c3 3.bxc5# 1...R~b 2.g5 th. 3.f3#, 2...c3 3.b5# 1...Rxb4 2.g5 th. 3.f3#, 2...c3 3.Rxb4# The key sets up the second masked pawn battery. Both are emplyed three times, after random moves of black pieces and then after their corrections.

#3 (12+9)

Michail Marandjuk 4th Prize Mat 1975	1.Bb1! th. 2.Rxh4! th. 3.c4# 2...Se5, Sf4+ 3.R(x)f4# 1...Bxf6 2.Bxf6! th. 3.c3# 2...Se5,Sf4+ 3.R(x)f4# 1...Bxd6 2.c3+ Ke5 3.c4# 1...hxg3 2.c4+ Kg4, Kf4 3.c5# After obvious key there is a threat using critical rook move and pawn battery mate. The same strategy is contained in the first variation. The other pair of variations employ distant selfblocks and subsequent double play of white pawn batteries. Very thematical, isn't it?

#3 (12+7)

György Bakcsi 5th Place Hungary - GDR 1985	1.Sa3! th. 2.Rxd2+ Kxa1 3.Sb3# 1...Rg3 2.Sd3 th. 3.c5# 1...Rg4 2.Se4 th. 3.c5# 1...Rg8 2.Sb7 th. 3.c5# 1...Rg7 2.Sd7 th. 3.c5# 1...Rg6 2.Se6 th. 3.c5# 1...dxc3 2.Bxc3 th. 3.Ra1#, Rxd2# Any move of bRg5 is a defence against threat as it opens bishop line. However, it also gives up masked guard on wB and thus potentially allows 2.Sc5~ unblocking pawn batery. Then it turns out that specific arrivals of bR carry dual avoidance affects and knight jumping away must jump in fact very precisely.

#3 (10+9)

Valentin Rudenko Michail Marandjuk 1st Prize Die Schwalbe 1989	1.Rxf7? th. 2.Rxf6# 1...Bxe5! 1.bxc7? th. 2.c8Q# 1...Bxd5! 1.Qc5! th. 2.Qxc6 th. 3.Qxf6,Qd7#, 2...fxe5 3.Rxf7# 1...Bxd5 2.Rxf7 th. 3.Rxf6#, 2...Bxf7 3.e6# 1...Bxe5 2.bxc7 th. 3.c8Q#, 2...Bxc7 3.d6# Pawn halfbattery is created by the key. It turns into pawn battery by means of annihilation of one of pawns. Black bishops are lured away by silent sacrifices and then their line of action to the battery line is cut by mating pawns.

#3 (13+12)

Hubert Gockel 1st Prize Schach 1993	1.Qc6! th. 2.Sxg5+ fxg5 3.Qf6# 1...Rf7 2.e5 A th. 3.d6# B, 2...Bd6 a 3.Rg3# C 2...S~, fxe5 3.Sd4#, Sxg5# 1...Rxh6 2.d6 B th. 3.Rg3# C, 2...Bxd6 a 3.e5# A 2...Kxg4 3.Bxe2# 1...Bd6 2.e5 th. 3.Rg3#, 2...Bxe5, Sd4 3.d6#, Sxd4# Here we see the pawn halfbattery again, diagonal one, and also the outcome is very different. Djurasevic cycle in the form of threemover variations is known as Djura-Gockel too.

#3 (11+13)

Comments to Juraj Lörinc.
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