Search found 46 matches

by MLWi
Tue May 09, 2017 08:04
Forum: General discussion
Topic: Killer draughts
Replies: 79
Views: 58992

Re: Killer draughts

We have the same problem in the chess community. The conservatism is overwhelming. Everything must remain as before. The other way to counter the draw problem is simply to increase the board size, I suppose. It seems that 20 pieces each on 50 squares (as only half the board is used) creates insuffic...
by MLWi
Fri May 05, 2017 06:53
Forum: General discussion
Topic: On the origin of Killer variants
Replies: 3
Views: 6735

Re: On the origin of Killer variants

Also in Argentinian checkers, the King must land immediately behind the last captured piece. Otherwise it's the same as Spanish checkers (Damas).
https://en.wikipedia.org/wiki/Draughts

Mats
by MLWi
Fri May 05, 2017 06:16
Forum: General discussion
Topic: Spanish Checkers Variants
Replies: 0
Views: 3921

Spanish Checkers Variants

13 Spanish checkers variants, from different parts of the world, have been (correctly) implemented in Zillions, whose checkers engine plays a decent game. In Spanish checkers the Man cannot capture backwards, and the King is long jumping. However, there are variants on the theme. For example, in som...
by MLWi
Fri May 05, 2017 06:02
Forum: Draughts (checkers) all over the world
Topic: Singaporean Dum
Replies: 0
Views: 4730

Singaporean Dum

In Singapore they play Dum, a 12x12 Spanish checkers variant where capture with King has preference over capture with Man:
Spanish Checkers Variants
(http://two-paths.com/bg/spanishcheckersvariants.htm)

Mats
by MLWi
Fri May 05, 2017 05:55
Forum: Draughts (checkers) all over the world
Topic: South African Dumm
Replies: 0
Views: 3818

South African Dumm

by MLWi
Thu Mar 31, 2016 06:33
Forum: General discussion
Topic: Killer draughts
Replies: 79
Views: 58992

Re: Killer draughts

I ran my Killer draughts program against itself. In the first game, white wins a 2 against 1 Dame endgame (chess notation) /Mats. http://s30.postimg.org/jnhvllgmp/chess_diag.gif 1. Man a3 - b4 1. Man d8 - c7 2. Man d6 - b8 = Captured-Man on c7 2. Man a7 - c9 = Captured-Man on b8 3. Man f2 - e3 3. Ma...
by MLWi
Wed Feb 17, 2016 08:44
Forum: General discussion
Topic: Killer draughts
Replies: 79
Views: 58992

Re: Killer draughts

Rein Halbersma wrote: I would be willing to try Killer-light but only if it can be shown that e.g. post-Scouppe endgames like this win:
Image
Draw in regular draughts, win in Killer. Result in Killer-light?
My Killer-light program can't find a win.

Mats
by MLWi
Wed Feb 17, 2016 05:03
Forum: General discussion
Topic: Modern Draughts (Killer Light)
Replies: 3
Views: 5690

Re: Modern Draughts (Killer Light)

DUH!! In my latest update I managed to destroy the Killer light function. So if you downloaded, you must download again. (Sometimes I am too much in a hurry.)
http://mlwi.magix.net/bg/moderndraughts.htm

Mats
by MLWi
Tue Feb 16, 2016 18:22
Forum: General discussion
Topic: Modern Draughts (Killer Light)
Replies: 3
Views: 5690

Re: Modern Draughts (Killer Light)

Be sure to get the latest version of the program, which I uploaded just now. In this one, king movement is calculated more rapidly.

Mats
by MLWi
Tue Feb 16, 2016 14:15
Forum: General discussion
Topic: Modern Draughts (Killer Light)
Replies: 3
Views: 5690

Modern Draughts (Killer Light)

I have now published Modern Draughts, including software, here:
http://mlwi.magix.net/bg/moderndraughts.htm

If Juri doesn't object to the name "Modern Draughts", it will also be published on Zillions's site in the weekend.

Mats Winther
by MLWi
Tue Feb 16, 2016 08:24
Forum: General discussion
Topic: Killer draughts
Replies: 79
Views: 58992

Re: Killer draughts

I have now checked the position with Killer Draughts , by letting my Killer Draughts program play against itself. Then the win becomes kind of trivial: 2-7, 28-5, 7-29, 27-18, 29x12, 26x8, 36-41, 5x46 1-0 Perhaps this is an argument in favour of Killer Light, because we don't want trivial wins, do w...
by MLWi
Tue Feb 16, 2016 07:45
Forum: General discussion
Topic: Killer draughts
Replies: 79
Views: 58992

Re: Killer draughts

Oh, I invented the notation myself. I will keep to PDN in the future.

Evidently, this key position is a win in killer-light. So it is looking good.

Mats
by MLWi
Tue Feb 16, 2016 07:12
Forum: General discussion
Topic: Killer draughts
Replies: 79
Views: 58992

Re: Killer draughts

Ok, I've now run this again. I set the program to play against itself. Notice that this win is perhaps overly long-winded. After all, computers don't like the motif of sacrificing two kings for one piece. Perhaps there is a neater win. http://s9.postimg.org/4mpvky90f/klight2.gif 2-7, 28-32, 7-11, 27...
by MLWi
Tue Feb 16, 2016 05:51
Forum: General discussion
Topic: Killer draughts
Replies: 79
Views: 58992

Re: Killer draughts

Could you please use normal notation? I don't understand: after 2-7 28-32 7-11 27-22 11x37 26x42 it's a draw, right? Black plays 36-41 (not 36-31) Oh, I see my mistake. I thought that black on 36 moved upwards. (Anyway, the variants are correct, if that were the case.) I will check this again. Mats
by MLWi
Mon Feb 15, 2016 19:49
Forum: General discussion
Topic: Killer draughts
Replies: 79
Views: 58992

Re: Killer draughts

I checked this last position with my program, and it's an easy win. Except the variant already mentioned, I give these two: http://s21.postimg.org/9e3xxzj13/klight1.gif (1) 2-7, 28-32, 7-11, 27-22, 11-28x-37x, 26-48x, 36-31, 48-26x (2) 2-35, 28-19, 35-13x-31x, 26-42x, 36-31, 42-26x However, for the ...