Ultra fair openings set: ufo.epd
Posted: Fri Apr 18, 2014 9:40 pm
The opening set is generated by this SQL query from my database:
SELECT TOP 500
Epd + ' ' +
dbo.opcode_format('acd', acd) +
dbo.opcode_format('acs', acs) +
dbo.opcode_format('cce', round(coef * 444.0,0))+
dbo.opcode_format('ce', ce) +
dbo.opcode_format('pm', pm) +
dbo.opcode_format('pv', pv) +
dbo.opcode_format('white_wins', white_wins) +
dbo.opcode_format('black_wins', black_wins) +
dbo.opcode_format('draws', draws) +
dbo.opcode_format('Opening', Opening)
,
*
FROM Epd
WHERE games > 200 -- if nobody plays the position, how interesting is it? Not very.
AND (white_wins + black_wins) > draws * 1.5 -- Does anyone want to watch a match that goes draw, draw, draw, draw... I know I don't
AND len(Epd) >= 44 -- The position should be (within reason) an opening position
AND abs(coef) < 0.1 -- the actual outcomes should not be lopsided (see white_wins, black_wins and draws for better understanding of coef)
AND abs(ce) < 35 -- The analysis score should not be lopsided if we are trying to determine engine strength
AND abs(ce) > 1 -- no "hardwired" draws please. Some engines score draws as +/- 1. Don't ask me why.
AND len(pm) >= 30 -- There should be lots of alternative moves. Only one or two sensible choices means too many highly similar games
AND acd >= 30 -- The position must have been analyzed to at least 30 plies for the ce analysis to be fully trusted
AND acs >= 180 -- We must have analyzed the position for at least 3 minutes (40 moves in 2 hrs is 3 minutes per move on average)
AND NOT Opening is null -- This position should come from some known opening, rather than some off-the-wall starting point so that people can look up the theory on it
ORDER BY abs(coef) -- The most important factor in selection is the actual outcome in games played. Wins for white and black should be fairly close to the same number.
SELECT TOP 500
Epd + ' ' +
dbo.opcode_format('acd', acd) +
dbo.opcode_format('acs', acs) +
dbo.opcode_format('cce', round(coef * 444.0,0))+
dbo.opcode_format('ce', ce) +
dbo.opcode_format('pm', pm) +
dbo.opcode_format('pv', pv) +
dbo.opcode_format('white_wins', white_wins) +
dbo.opcode_format('black_wins', black_wins) +
dbo.opcode_format('draws', draws) +
dbo.opcode_format('Opening', Opening)
,
*
FROM Epd
WHERE games > 200 -- if nobody plays the position, how interesting is it? Not very.
AND (white_wins + black_wins) > draws * 1.5 -- Does anyone want to watch a match that goes draw, draw, draw, draw... I know I don't
AND len(Epd) >= 44 -- The position should be (within reason) an opening position
AND abs(coef) < 0.1 -- the actual outcomes should not be lopsided (see white_wins, black_wins and draws for better understanding of coef)
AND abs(ce) < 35 -- The analysis score should not be lopsided if we are trying to determine engine strength
AND abs(ce) > 1 -- no "hardwired" draws please. Some engines score draws as +/- 1. Don't ask me why.
AND len(pm) >= 30 -- There should be lots of alternative moves. Only one or two sensible choices means too many highly similar games
AND acd >= 30 -- The position must have been analyzed to at least 30 plies for the ce analysis to be fully trusted
AND acs >= 180 -- We must have analyzed the position for at least 3 minutes (40 moves in 2 hrs is 3 minutes per move on average)
AND NOT Opening is null -- This position should come from some known opening, rather than some off-the-wall starting point so that people can look up the theory on it
ORDER BY abs(coef) -- The most important factor in selection is the actual outcome in games played. Wins for white and black should be fairly close to the same number.
