Re: Analyze game between Help Bot & Normal Level

Sanny wrote:
>>   I "face it now" by trading down to an elementary win,
>> only to have the game wrongly adjudicated as a draw
>> because somebody atGetClubdoesn't know much
>> aboutchess.  :>D
>>
>>   KBB vs. K is a forced win, just like KR vs. K is.
> 
> I know KBB vs K is forced win.
> 
> But when Computer has 2 Bishops extra and it will never be able to
> find a win. So the game will never end.

If it is the computer with the extra material then it has to offer a 
draw because it doesn't know how to win. But it cannot claim a draw 
against a human opponent with that same extra material just because it 
doesn't know how to win. You could always add tablebases to sort this 
out onces and for all.

Or a few extra heuristics in the evaluation when the number of pieces on 
the board are 5 or less and special cases for Kxx against lone K.
KBBk and KBNk are probably the most im****tant gaps here. KNNNk although 
a theoretical win requires a perverse set of cir***stances to arise in 
real play.
> 
> I has giving these cases as Draw.
> 
> KBB vs K
> 
> KNB vs K

But these are both mostly clear wins for a half decent human player 
against any defence. They would be a routine win against Getclub because 
it has no understanding of how the mating net is constructed.

 >
 > KNN vs K
> 
> KB vs K
> 
> KN vs K
> 
> KN vs KB
> 
> KN vs KR
> 
> KB vs KR
> 
> In all above cases game will end in a draw.

Generally true except in the KR case where there may sometimes be a pin, 
check or forced move that results in the capture of the N or B (which is 
worth looking for before declaring it drawn). Reducing to KRk.

Regards,
Martin Brown
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