STS 15 - Avoid Pointless Exchange

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swami
Posts: 6535
Joined: Thu Mar 09, 2006 3:21 am

STS 15 - Avoid Pointless Exchange

Post by swami » Wed Apr 02, 2014 9:51 am

Hi All,

STS 15 is now available for download.

Consists of carefully selected 100 test positions on "Avoid pointless exchange"
The test suite deals with the decision to exchange or not, with all of the positions involving queen. These are the cases when the exchange is best avoided because the side retaining the queen is more aggressive , and therefore prefers to have the major piece's presence in order to conduct the attack on the flank or even in the center.

It may even be the case when keeping the queen on the board may prove beneficial to the side, in terms of better co-ordination with other pieces.

Furthermore, the positional imbalance arising out of these positions suggests that it is best to avoid pointless exchange.
Tests engine's knowledge on Exchanging, Piece Activity, Positional imbalance and Mobility.

Download it here

Direct Link: https://sites.google.com/site/strategic ... change.epd

Swaminathan, and Dann Corbit

Ferdy
Posts: 3645
Joined: Sun Aug 10, 2008 1:15 pm
Location: Philippines

Re: STS 15 - Avoid Pointless Exchange

Post by Ferdy » Wed Apr 02, 2014 10:01 am

swami wrote:Hi All,

STS 15 is now available for download.

Consists of carefully selected 100 test positions on "Avoid pointless exchange"
The test suite deals with the decision to exchange or not, with all of the positions involving queen. These are the cases when the exchange is best avoided because the side retaining the queen is more aggressive , and therefore prefers to have the major piece's presence in order to conduct the attack on the flank or even in the center.

It may even be the case when keeping the queen on the board may prove beneficial to the side, in terms of better co-ordination with other pieces.

Furthermore, the positional imbalance arising out of these positions suggests that it is best to avoid pointless exchange.
Tests engine's knowledge on Exchanging, Piece Activity, Positional imbalance and Mobility.

Download it here

Direct Link: https://sites.google.com/site/strategic ... change.epd

Swaminathan, and Dann Corbit
Thank you to both of you for sharing these very interesting test sets.
I will consider these positions in my evaluation tuner training positions.

peter
Posts: 1656
Joined: Sat Feb 16, 2008 6:38 am
Full name: Peter Martan

Re: STS 15 - Avoid Pointless Exchange

Post by peter » Wed Apr 02, 2014 12:39 pm

Many thanks, Swami!
Peter.

swami
Posts: 6535
Joined: Thu Mar 09, 2006 3:21 am

Re: STS 15 - Avoid Pointless Exchange

Post by swami » Fri Apr 04, 2014 12:47 am

You're welcome.

My impression is that it is certainly more challenging compared to rest others in the series.

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Laskos
Posts: 8688
Joined: Wed Jul 26, 2006 8:21 pm

Re: STS 15 - Avoid Pointless Exchange

Post by Laskos » Fri Apr 04, 2014 4:54 pm

swami wrote:Hi All,

STS 15 is now available for download.

Consists of carefully selected 100 test positions on "Avoid pointless exchange"
The test suite deals with the decision to exchange or not, with all of the positions involving queen. These are the cases when the exchange is best avoided because the side retaining the queen is more aggressive , and therefore prefers to have the major piece's presence in order to conduct the attack on the flank or even in the center.

It may even be the case when keeping the queen on the board may prove beneficial to the side, in terms of better co-ordination with other pieces.

Furthermore, the positional imbalance arising out of these positions suggests that it is best to avoid pointless exchange.
Tests engine's knowledge on Exchanging, Piece Activity, Positional imbalance and Mobility.

Download it here

Direct Link: https://sites.google.com/site/strategic ... change.epd

Swaminathan, and Dann Corbit
Thanks to you both. A short test to test the scaling, Stockfish seems again to scale better than Houdini on this test too, as in previous STS 1-14:

Code: Select all

1 second/postiotion
H4       64/100
SF030414 61/100


1 minute/postiotion
H4       87/100
SF030414 92/100

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