Author: Terry McCracken
Date: 14:26:05 03/06/02
Go up one level in this thread
On March 06, 2002 at 17:07:51, Robert Hyatt wrote: >On March 06, 2002 at 16:55:53, Terry McCracken wrote: > >>On March 06, 2002 at 15:59:21, Robert Hyatt wrote: >> >>>On March 06, 2002 at 13:55:14, Terry McCracken wrote: >>> >>>>On March 06, 2002 at 13:09:05, Robert Hyatt wrote: >>>> >>>>>On March 06, 2002 at 11:20:17, Terry McCracken wrote: >>>>> >>>>>>[D]8/8/8/8/8/6P1/6k1/4KR1R w >>>>>> >>>>>> >>>>>>Mate in 3 >>>>>> >>>>>>Terry >>>>> >>>>> >>>>>This is a mate in 4, not a mate in 3, as confirmed by EGTBs... >>>> >>>>Dr. Hyatt with all due respect, EGTBs will _not_ help you with this type >>>>of problem. EGTBs look at it as an endgame where it's assumed the King and both >>>>Rooks have been moved. Maybe EGTBs can be adjusted for this situation? >>>> >>>>Castling is the correct solution, which forces mate in 3. >>>> >>>>BTW CM8000 in mate mode or in normal mode will find mate in 3 instantly! >>>> >>>>This problem created 145 years ago by Samuel Lloyd when he was not yet 16 years >>>>of age, is still considered one of the most famous problems in chess history. >>>> >>>>http://www.chessbase.com/puzzle/puzzle9/puzz9-6a.htm >>>> >>>>The solution can be found at this link. >>>> >>>>http://www.chessbase.com/puzzle/puzzle9/games/p9_6.htm >>>> >>>>Regards, >>>> Terry McCracken >>> >>> >>>Sorry, but if you check the +EPD+ posted for the position, there is _no_ >>>castling possible. Which means this is a simple mate in 4 and the EGTB >>>results are perfect. >> >>You've got to be joking!? If it's the fault of how I set the diagram, please >>forgive me! >> >>Forget FEN, Forget EPD and look at it as a _position only_ with the only clue >>Mate in 3! >> >>I'll check the rules on what is or is not needed at the end of the FEN. >> >>But really, you must have understood my intent and that this _position_ >>forgeting the *Rule Base* for FEN and or EPD is a mate in 3? > >Actually I didn't give it much thought, because the idea of grabbing a >position that is not legal never entered my mind. In the position you gave, >white has no castling rights by the FEN string, and white has no rook to >castle with either. Also it is not exactly "white to move" because white >has already started to make a move but has not completed it. > >Which was my point in the first place... what is the interest in grabbing >a position on the board at some random point in time, rather than grabbing it >only when one side is to move in a legal position? > >How convoluted! Please! I agree you gave it little thought, except for your defence! I was unaware of these rules with FEN when I posted....I thought maybe you would see my error, (In this case not knowing the FEN Rules) and understand I was setting up a Mate in 3 Problem and to attempt to solve it! Of course this means you would look at it as if I set it up on a *Real* board and said look Bob; Here's a mate in 3 White to Move, do you see it? > > >> >>Now try your EGTBs with the castling rule, thanks! > >EGTBs don't include castling because it would be a waste of time and >space. > >Yes I guess it would be 99.999% of the time. >> >>Terry
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