Author: Enrique Irazoqui
Date: 05:58:48 03/08/01
Go up one level in this thread
On March 07, 2001 at 17:17:50, Frederic Friedel wrote: >On March 07, 2001 at 03:19:19, Sune Larsson wrote: > >> Yes, I can confirm the above, i.e. "search of the board position doesn't work >> properly." >> Or doesn't work at all. As for now this function consitutes a piece of trash. >> I would even go so far as to recommend possible purchasers *not* to buy this >> product until being fixed. Just now I searched for the famous endgame position >> in Pillsbury-Gunsberg, Hastings 1895, where Pillsbury broke through with 27.f5! >> Result: *Nothing* But the game is of course in Big2001 and this DB is set >> to Reference DB... Simply doesn't work. I know that Enrique I. has a lot of >> similar experiences. As he told me "It happens all the time." > > >I tried it out, did a position search in Mega 2001 for > >1n6/4k2p/p3ppp1/1pPp1P2/3P2P1/3NP3/P3K2P/8 >wKe2,Nd3,Pa2,c5,d4,e3,f5,g4,h2/bKe7,Nb8,Pa6,b5,d5,e6,f6,g6,h7 > >and in zero seconds got > >Pillsbury,H - Gunsberg,I [D94] >Hastings Hastings, 1895 >1.d4 d5 2.c4 c6 3.e3 g6 4.Nc3 Bg7 5.Nf3 Nf6 6.Bd3 0-0 7.Ne5 dxc4 8.Bxc4 Nd5 9.f4 >Be6 10.Qb3 b5 11.Bxd5 Bxd5 12.Nxd5 Qxd5 13.Qxd5 cxd5 14.Nd3 Nd7 15.Bd2 Rfc8 >16.Ke2 e6 17.Rhc1 Bf8 18.Rxc8 Rxc8 19.Rc1 Rxc1 20.Bxc1 Bd6 21.Bd2 Kf8 22.Bb4 Ke7 >23.Bc5 a6 24.b4 f6 25.g4 Bxc5 26.bxc5 Nb8 27.f5* g5 28.Nb4 a5 29.c6 Kd6 30.fxe6 >Nxc6 31.Nxc6 Kxc6 32.e4 dxe4 33.d5+ Kd6 34.Ke3 b4 35.Kxe4 a4 36.Kd4 h5 37.gxh5 >a3 38.Kc4 f5 39.h6 f4 40.h7 1-0 > >with the position after 27.f5 on the board. I can't figure out what may be going >wrong. The only ways I could make the search fail was: > >1. by leaving some other criteria on from a previous search (e.g. "Kasparov" in >the Player's field) -- it is advisable to reset the search mask with "Reset" to >make sure something like this does not occur; > >2. by setting the move window to less than 27 moves (i.e. First=1, Length=1, >Last=26 will not retieve the position, whereas First=1, Length=1, Last=27 will). > >Please check whether it could be one of the above. Maybe you can give me some >other positions that are not retrieved, so we can try and duplicate the error. Try with any position in any game of your reference database, Mega2001 for instance, so you know the position is there. Open the board and then right click on it and click on "Search in Mega2001". Nothing happens: first bug. Then press Shift+F7 and the search starts, but the position is not found: second bug. Same thing if you have a database of positions and you want to check if they exist in another database. Positions are not found. CB7, instead, has no problems in finding them. Enrique
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