Search found 134 matches

by Stephen Ham
Thu Jun 06, 2019 12:12 am
Forum: Computer Chess Club: General Topics
Topic: Cfish, shiny and new...
Replies: 13
Views: 806

Re: Cfish, shiny and new...

Thanks, Dann! Since I'm the resident dummy here, please tell me what the clang and gcc suffixes mean. Also, what is the "vanilla" label? Back when I tested Cfish in tactical battles, I saw something strange. Although Cfish was always faster than other engines, its search depth was sometimes less dee...
by Stephen Ham
Tue Jun 04, 2019 4:19 am
Forum: Computer Chess Club: General Topics
Topic: A little more B30 Sicilian
Replies: 4
Views: 196

Re: A little more B30 Sicilian

Hi Eelco,

Perhaps Stockfish's heuristics are similar to Bent Larsen's chess philosophy. He too disliked 3 d4, since it trades the central pawn for a flank pawn. While that seems excessively simplistic, the great GM stated exactly that in his autobiography/book of best games.

All the best,
Steve
by Stephen Ham
Sat May 11, 2019 1:02 am
Forum: Computer Chess Club: General Topics
Topic: Opposite Color Bishop Endgames
Replies: 43
Views: 2348

Re: Opposite Color Bishop Endgames

That is why I posted as I did. In your link, I recall Majid Ansari's post of over five years ago when he wrote: I actually watched SF win a very nice opposite bishop endgame against Houdini. The struggle in the endgame was to avoid a drawn opposite bishop endgame and I thought SF handled it extremel...
by Stephen Ham
Fri May 10, 2019 7:22 pm
Forum: Computer Chess Club: General Topics
Topic: Opposite Color Bishop Endgames
Replies: 43
Views: 2348

Re: Opposite Color Bishop Endgames

One should remember that the design goal of engines is in general not to be good at chess, but just to have a high Elo. If worse programs score better in games, it is preferred to make them worse. Hi HG, Those are indeed words of wisdom. That's why I post here, to learn such wisdom. I knew that was...
by Stephen Ham
Fri May 10, 2019 4:48 am
Forum: Computer Chess Club: General Topics
Topic: Opposite Color Bishop Endgames
Replies: 43
Views: 2348

Opposite Color Bishop Endgames

Hello All, The following 8-piece endgame just arose in a Raubfisch X40a3-Cfish match: [d]4b3/8/6k1/6p1/p6p/K3B1P1/8/8 w 01 Virtually all humans immediately see that this is a draw. White will exchange pawns and then sac his Bishop for Black's dark-squared pawn, leading to a King versus King, Bishop,...
by Stephen Ham
Mon May 06, 2019 1:10 am
Forum: Computer Chess Club: General Topics
Topic: asmFish
Replies: 35
Views: 3034

Re: asmFish

Thanks for your valued input, Syzygy. Rather than overall playing strength, I was instead testing tactical acuity. In that 100 game match with long TC, asmFish/PedantFish failed. That was a surprise as the test was skewed in its favor, as previously explained, given the latter's roughly 25% speed ad...
by Stephen Ham
Sun May 05, 2019 2:55 am
Forum: Computer Chess Club: General Topics
Topic: asmFish
Replies: 35
Views: 3034

Re: asmFish

Hi Mike, Thanks for your interest. Like you, I wish the asmFish effort was sustainable since conceptually, its superior speed would make it the strongest Stockfish (SF). I'm auditing the games now and something interesting is apparent. It was my perception while watching the games that while asmFish...
by Stephen Ham
Sun May 05, 2019 12:56 am
Forum: Computer Chess Club: General Topics
Topic: asmFish
Replies: 35
Views: 3034

Re: asmFish

For those who are interested... I'm stopping the Stockfish (SF) vs. asmFish match after one week at 100 games. The score is now 15:6 in favor of SF after 99 games (game 100 is 40 moves deep and equal). That's nearly a 3x greater victory factor! Here quality was a greater factor than calculating spee...
by Stephen Ham
Mon Apr 29, 2019 10:08 pm
Forum: Computer Chess Club: General Topics
Topic: asmFish
Replies: 35
Views: 3034

Re: asmFish

Hi Dann and Kai, and fellow members, Thank you gents for your thoughtful posts. As a result, I wonder if I should have worded my initial post better, since it's apparent that you've misunderstood me, Kai. I know that results from just 20 games in an on-going match is far too little to draw conclusio...
by Stephen Ham
Mon Apr 29, 2019 9:40 am
Forum: Computer Chess Club: General Topics
Topic: Raubfisch
Replies: 43
Views: 4984

Re: Raubfisch

Hello Mike,

I sent all 200 games to Graham Banks and then deleted them, so I could group the subsequent match games there. But if you'd like them, I'm certain Graham will oblige.

As for sharp lines, Mike, I'll personally email you the Opening Book I created.

All the best,
Steve