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MatPlus.Net Forum General Problems with promoted pieces
 
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(1) Posted by Hauke Reddmann [Tuesday, Jan 6, 2015 11:51]; edited by Hauke Reddmann [15-01-06]

Problems with promoted pieces


First I wanted to ask here whether you know problems with
many same-colored bishops OTHER than the Troitsky study,
but a single YACPDB search turned up more problems
than I could handle. (In hindsight, the name Gvozdják
should not surprise :-)

The following statistic might be interesting (but is
somewhat misleading, as it counts rotated bishops,
8*8>1*8 one-liners and other false positives).

SSS - 638, SSSS - 230, SSSSS - 73, SSSSSS - 31, SSSSSSS - 18
BBB - 378, BBBB - 148, BBBBB - 39, BBBBBB - 19, BBBBBBB - 12
RRR - 338, RRRR - 140, RRRRR - 62, RRRRRR - 28, RRRRRRR - 10
QQQ - 681, QQQQ - 359, QQQQQ - 181, QQQQQQ - 103, QQQQQQQ - 50

My initial guess was S:Q:R:B = 100:10:2:1, but then, to paraphrase
Captain Hero, I'm an S man :-)

Hauke
 
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(2) Posted by Sven Hendrik Lossin [Wednesday, Jan 7, 2015 09:44]

Your assumption on the ratio was somewhat astonishing. But this is the view from a selfmate composer.
The query piecelist='LLL' and not g='Retro' and not g='Fairies' gave a somewhat reasonable result in the PDB.
 
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MatPlus.Net Forum General Problems with promoted pieces