Blog "Chess Engines Diary" - needs a new laptop for chess engine tests

♔ We use for testing only 2 old laptops:
1. Acer - Intel Core i3-3217U ( 5 years old)
2. Lenovo - Intel Core i7-4710MQ is over 3 years old (He works 24 hours a day)

♕♞ A modern laptop that will be designed only for chess engine tests costs (with software) about $ 1000-1200 (4200-4500 PLN). We will no longer invest private money, and chess engine testing costs are big. That is why we are starting the collection for the purchase of a laptop for testing.

♕ Our blog "Chess Engines Diary" is visited by around 2,000-3.000 users daily. If only everyone paid 1 dollar - we will pay the required amount in one day!


Saturday, April 29, 2017

Stockfish 17042905_Costalba - new version!

Stockfish, chess engine UCI
Leader rating list JCER = 3405
🔬 Author: Marco Costalba


Timestamp: 1493436810 

Retire the misdesigned StepAttacks[] array. 

StepAttacks[] is misdesigned, the color dependance is specific to pawns, and trying to generalise to king and knights, proves neither useful nor convinient in practice. 

So this patch reformats the code with the following changes: 
- Use PieceType instead of Piece in attacks_() functions 
- Use PseudoAttacks for KING and KNIGHT 
- Rename StepAttacks[] into PawnAttacks[] 

Original patch and idea from Alain Savard. 
No functional change. 
Closes #1086 

⭐⭐⭐   Stockfish 17042905_costalba - download

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