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MatPlus.Net Forum General Nonstandard boards
 
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(1) Posted by Hauke Reddmann [Thursday, Nov 26, 2020 20:10]

Nonstandard boards


In my long (2#) composing experience I surely encountered
at least 5 instances of the 8*8 board being too small.
(Make that 6 - bishop unstalemating could be upped to
7 variants by using two Gamage interferences if only
the board is large enough.) A few questions:

- Which solving programs can handle such boards?
- Has there ever been a theme tourney for that?
- Any real good (say Album) problem you know?
 
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(2) Posted by Juraj Lörinc [Thursday, Nov 26, 2020 21:11]

WinChloe can handle larger boards also for solving.

I have searched the large WinChloe database for any problems being noted as competing in TT and on larger board. Besides problems from TTs I already knew (i.e. quite recent) there were a few TTs with multiple presence, worth of investigating:
= 120th TT Die Schwalbe 1956-1957
= 12th TT The Problemist 1930

21 problems with non-standard-sized chessboard (not only larger, but also smaller) are noted as being published in FIDE Albums. Of them perhaps the least fairy is #21 by Jan Mortensen, Feenschach 1964 (725 p.154, Album FIDE 1962-64)
Board 12×12
White: Ke3 Ql3
Black: Kc2 Ra2 Pb4b3b2d2
1.Qh7+! Kc1 2.Qc7+ Kd1 3.Qi1+ Kc2 4.Qi8+ Kc1 5.Qc8+ Kd1 6.Qj1+ Kc2 7.Qj9+ Kc1 8.Qc9+ Kd1 9.Qk1+ Kc2 10.Qk10+ Kc1 11.Qc10+ Kd1 12.Ql1+ Kc2 13.Qg6+ Kc1 14.Qc6+ Kd1 15.Qh1+ Kc2 16.Qe4+ Kc1 17.Qc4+ Kd1 18.Qf1+ Kc2 19.Qd3+ Kc1 20.Q×d2+ Kb1 21.Qd1#

For me the first meeting with larger board was this #2 by Peter Gvozdják, Special Prize Pravda 1988
Board 16×16
White: Kd16 Ri8b6o6 Be11k11d10f9j9k9e5m3c1 Sc6 Pe8k8e7f7j7h4i4
Black: Kh6 Qk5c3d2 Ba15o15n6a1d1e1o1 Pc15f8j8b7g3c2
I leave the try and solution as an exercise for interested reader.
 
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MatPlus.Net Forum General Nonstandard boards