Search found 145 matches

by marste
Thu Mar 29, 2018 3:32 pm
Forum: Development
Topic: 1K Real Chess for ZX80
Replies: 92
Views: 20408

Re: 1K Real Chess for ZX80

Good! :) Even with the "not mirrored" version try to play black (meaning the color at the bottom of the screen) with ZX80 against a Spectrum playing white. As said even without initial logic might play a bit better (moving pawns instead of wasting moves with the tower until something interesting hap...
by marste
Thu Mar 29, 2018 9:52 am
Forum: Development
Topic: 1K Real Chess for ZX80
Replies: 92
Views: 20408

Re: 1K Real Chess for ZX80

Yes I mirrored not rotate, sorry!! :(

Good you can rotate the Spectrum at least (the changes for rotation are not difficult but spread in various part of the code and so not a quick upgrade)!
by marste
Wed Mar 28, 2018 7:37 pm
Forum: Development
Topic: 1K Real Chess for ZX80
Replies: 92
Views: 20408

Re: 1K Real Chess for ZX80

I also saw the final mate move refusal behaviour and I've to investigate in it. 72 moves was not an easy win, but with such time disparity I was hoping better. Seems I should probably do something to improve pawn promotion evaluation... Did you spot other "strange" moves? Can you post the log in the...
by marste
Wed Mar 28, 2018 1:15 pm
Forum: Development
Topic: 1K Real Chess for ZX80
Replies: 92
Views: 20408

Re: 1K Real Chess for ZX80

Try to make the thinking time between the two engines similar if possible! :)
(30sec move as a mean should be good on ZX80/81)

Really curious to see the next game! :)

Thank you!!
_Stefano
by marste
Wed Mar 28, 2018 1:08 am
Forum: Development
Topic: 1K Real Chess for ZX80
Replies: 92
Views: 20408

Re: 1K Real Chess for ZX80

PS: if the opponent engine make use of a movebook, in order to level the playing field you can manually setup the starting position to the end of some known opening, and let play both engines once as black and onche as white! here some examples: http://www.mark-weeks.com/aboutcom/aa05l17.htm https:/...
by marste
Wed Mar 28, 2018 12:37 am
Forum: Development
Topic: 1K Real Chess for ZX80
Replies: 92
Views: 20408

Re: 1K Real Chess for ZX80

Yes, I think that the problem was about the strange ROM, since I never saw such behaviour. Regarding the board orientation is not an easy thing since various logic about pawn and castling etc, but I'll put in the todo list. What anyway I can do now is providing a version in which the black is starti...
by marste
Tue Mar 27, 2018 12:23 pm
Forum: Development
Topic: 1K Real Chess for ZX80
Replies: 92
Views: 20408

Re: 1K Real Chess for ZX80

The en-passant should be properly managed: as said just double-step on first move of every pawn allows it. Easy to test various combination with this "flexible" version moving appropiately both sides. Also manual moves are checked for legality, with the only exception for castling in which there is ...
by marste
Mon Mar 26, 2018 8:41 pm
Forum: Development
Topic: 1K Real Chess for ZX80
Replies: 92
Views: 20408

Re: 1K Real Chess for ZX80

I tested the en-passant and it is working. The way is the usual one: you take the piece you want to move and put it in the destination square! If it happen to discover a strange situation (this or another) please report it and I'll investigate! Good to know that alfa-beta version is stronger! Anyway...
by marste
Sat Mar 24, 2018 2:43 pm
Forum: Development
Topic: 1K Real Chess for ZX80
Replies: 92
Views: 20408

Re: 1K Real Chess for ZX80

So, here it is: the flicker free release of 1k real chess for ZX80. Hope is working! 8-) Attached there are 2 versions; one using alfa/beta pruning on 4 ply, the other quiescence search on 3-5 ply (I've still to merge of the two capabilities). Both are still without initial move logic and full optim...
by marste
Fri Mar 23, 2018 6:05 pm
Forum: Development
Topic: 1K Real Chess for ZX80
Replies: 92
Views: 20408

Re: 1K Real Chess for ZX80

Then will be easily done! ;)

This weekend I'll post new version!