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Subject: Infinite PV's / hash extraction repetition problem

Author: Sune Fischer

Date: 17:17:05 02/24/03


Hey there.

I've dumped the triangle PV and are extracting from hash now.
I'm wondering if what's happening here is normal....

Sometimes when it finds a repetition it seems to go in a loop creating
infinitely long PV's. What is the right way to handle this, should I cut the PV
after 1st or 2nd rep, or just let it go nuts?
Or is this a sign of a bug somehow?

[D]r1q1kb1r/1pp1pppp/4bn2/p3N3/3P1P2/1Q6/PP2P1PP/R1B1KB1R w KQkq - 0 1


1	0	1	60		1.Qd1
2	-10	2	123		1.Qd1 Qd8
2	0	3	333		1.Qa4+ Bd7 2.Qd1
3	-5	4	823		1.Qa4+ Bd7 2.Nxd7 Qxd7
3	0	8	2273		1.Qa3 Ng4 2.Qa4+ Bd7
4	-5	13	4375		1.Qa3 Qd8 2.Qa4+ Bd7 3.Nxd7
4	-4	22	7187		1.Qd1 Qd8 2.e3 h5
4	0	31	11308		1.Qa4+ Bd7 2.Qb3 Be6 3.Qa4+ Bd7 4.Qb3 Be6 5.Qa4+ Bd7 6.Qb3 Be6
7.Qa4+ Bd7 8.Qb3 Be6 9.Qa4+ Bd7 10.Qb3 Be6 11.Qa4+ Bd7 12.Qb3 Be6 13.Qa4+ Bd7
14.Qb3 Be6 15.Qa4+ Bd7 16.Qb3 Be6 17.Qa4+ Bd7 18.Qb3 Be6 19.Qa4+ Bd7 20.Qb3 Be6
21.Qa4+ Bd7 22.Qb3 Be6 23.Qa4+ Bd7 24.Qb3 Be6 25.Qa4+ Bd7 26.Qb3 Be6 27.Qa4+ Bd7
28.Qb3 Be6 29.Qa4+ Bd7 30.Qb3 Be6
5	11	43	15789		1.Qa4+ Bd7 2.Nxd7 Qxd7 3.Qxd7+ Kxd7 4.Bd2
6	3	93	38696		1.Qa4+ Bd7 2.Qd1 e6 3.Bd2 Bb4 4.e3

Looks silly to me....
:)

-S.



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