Saturday, June 03, 2006

Suicide checkers rematch

On May 29th, Suicidal Cake (now in version 1.13c, with a larger endgame database and less materialistic evaluation than last time round, also with a new 30'000 move book) played a rematch against Suicide Kallisto. We again played 4 games, and again, Kallisto proved to be stronger. At least this time the result was not too lopsided, with +1=1-2 from Cake's point of view. The first two games were horrible to watch: they were a direct repetition of two themes which cost Cake two games in the last match. In the first game, Kallisto sacrificed 2 men just to get a red piece of Cake on the dreaded 21 square, then sacrificed a 3rd man and won convincingly. In the second game, Kallisto sacrificed a man to get an endgame where Cake's pieces were trapped on the edge.
I knew about both themes, the man on 21 and the mobility issue, and had improved Cake accordingly, but apparently I'm still not evaluating these things highly enough. In the 3rd game, Cake showed it wasn't a pushover, by sacrificing a man itself (to place a white man on square 5, which is probably not as bad as square 12/21, but also bad). Cake then went on to win. The last game ended in a fast draw.

[Event "Kurnik"]
[Date "2006-05-29"]
[Black "Suicidal Cake 1.13c"]
[White "Kallisto Suicide Checkers 1.13"]
[Result "0-1"]
1. 10-15 23-18 2. 9-13 21-17 3. 7-10 18-14 4. 3-7 14-9 5. 5x21 24-19 6. 15x24 28x19 7. 6-9 19-16 8. 11x20 27-23 9. 9-14 22-17 10. 13x22 26x17 11. 10-15 17x3 12. 15-18 23x14 13. 2-7 3x10 14. 1-6 10x1 15. 8-11 1-6 16. 20-24 0-1

[Event "kurnik"]
[Date "2006-05-29"]
[Black "Kallisto Suicide Checkers 1.13"]
[White "Suicidal Cake 1.13c"]
[Result "1-0"]
1. 9-13 24-20 2. 12-16 21-17 3. 5-9 28-24 4. 8-12 25-21 5. 1-5 32-28 6. 4-8 29-25 7. 11-15 20x4 8. 9-14 22-18 9. 15x29 26-22 10. 14-18 23x14 11. 7-11 14x7 12. 3x10 30-26 13. 12-16 26-23 14. 5-9 24-20 15. 9-14 28-24 16. 29-25 24-19 17. 25x18 19x12 18. 13x22 21-17 19. 14x21 23x7 20. 21-25 27-24 21. 25-30 31-27 22. 30-26 7-3 23. 11-15 3-8 24. 6-9 20-16 25. 2-6 8-3 26. 6-10 16-11 27. 22-25 11-7 28. 25-30 24-20 29. 26-22 27-24 30. 30-26 7-2 31. 26-23 20-16 32. 23-26 16-11 33. 26-31 3-8 34. 31-26 24-20 35. 26-23 8-3 36. 9-14 3-8 37. 15-19 8-3 38. 14-17 3-8 39. 22-18 20-16 40. 18-22 11-7 41. 22-25 8-3 42. 25-21 4-8 43. 17-22 8-4 44. 21-17 3-8 1-0

[Event "kurnik"]
[Date "2006-05-29"]
[Black "Suicidal Cake 1.13c"]
[White "Kallisto Suicide Checkers 1.13"]
[Result "1-0"]
1. 9-13 22-18 2. 12-16 26-22 3. 16-20 31-26 4. 10-15 18-14 5. 5-9 14x5 6. 8-12 23-19 7. 6-10 22-18 8. 15x31 19-16 9. 12x19 24x8 10. 3x12 28-24 11. 13-17 21x14 12. 10x17 25-21 13. 2-6 21x14 14. 6-9 29-25 15. 9x18 25-21 16. 7-11 21-17 17. 4-8 32-28 18. 18-22 17-14 19. 12-16 14-10 20. 22-26 30x23 21. 31-26 10-7 22. 26x19 24x15 23. 11x18 28-24 24. 8-11 7-3 25. 11-15 3-7 26. 18-22 7-10 27. 16-19 10-7 28. 19x28 27-23 29. 22-26 7-11 30. 15-19 1-0

[Event "Kurnik"]
[Date "2006-05-29"]
[Black "Kallisto Suicide Checkers 1.13"]
[White "Suicidal Cake 1.13c"]
[Result "1/2-1/2"]
1. 9-13 24-20 2. 12-16 22-17 3. 13x22 26x17 4. 8-12 28-24 5. 4-8 25-22 6. 16-19 23x16 7. 12x28 17-13 8. 5-9 21-17 9. 1-5 31-26 10. 8-12 29-25 11. 11-16 20x11 12. 7x16 27-24 13. 2-7 26-23 14. 16-19 23x16 15. 12x19 24x15 16. 10x19 22-18 17. 3-8 25-22 18. 8-11 30-25 19. 19-23 18-14 20. 9x18 22x8 21. 5-9 8-4 22. 23-27 32x23 23. 28-32 25-22 24. 7-11 22-18 25. 32-28 23-19 26. 11-16 19x12 27. 28-24 4-8 1/2-1/2

3 comments:

Martin Fierz said...

Daniel, this is my computer checkers blog. The topic is very definitely not checkers or openings or nice shots. Go to the Checker Maven for that.

If you don't care about suicide checkers, just stop reading :-)

As far as the 8pc database is concerned, you are quite right, it is "unfindable". I even say so on my "contribute" page (I bet you didn't read that)! If I had a place to put it, I would. But I'm very definitely not going to pay $$$ for a webhost just so that people can download the database. I already spent enough time and $$$ to produce it...

enhorning said...

I, for one, am quite interested in reading about your suicide checkers program. So please, keep up writing about that, normal checkers and anything related to any type of checkers :)

Yahawah said...

Hi Martin,

I'm trying to improve my suicide checkers game, however I come across this obsatcle , after clearing my opponent pieces, and left with one checker. I tend to lose -how do i overcome this problem?-please see a game I played below:
. 9-13 24-20 2. 11-16 20-11
3. 8-15 21-17 4. 10-14 17-10
5. 7-14 22-18 6. 15-22 25-18-9
7. 5-14 23-18 8. 14-23 27-18
9. 4-8 28-24 10. 1-5 32-27
11. 3-7 30-25 12. 13-17 26-22
13. 17-26 31-22 14. 5-9 22-17
15. 7-10 18-15 16. 10-19-28 17-14
17. 9-18 27-23 18. 18-27 25-22
19. 28-32 22-17 20. 12-16 17-14
21. 6-10 14-7 22. 2-11 29-25
23. 11-15 25-21 24. 8-12 21-17
25. 27-31 17-14 26. 15-18 14-10
27. 16-19 10-7 28. 18-23 7-2
29. 23-26 2-7 30. 31-27 7-10
31. 19-23 10-14 32. 12-16 14-9
33. 16-19 9-14 34. 26-31 14-17
35. 23-26 17-22 36. 19-23 22-17
37. 27-24 17-14 38. 26-30 14-17
39. 32-27 17-14 40. 31-26 14-10
41. 30-25 10-14 42. 27-31 14-10
43. 25-22 10-6 44. 22-18 6-1
45. 31-27 1-6 46. 26-22 6-1
47. 22-17 1-6 48. 23-26 6-1
49. 18-15 1-5 50. 24-19 5-1
51. 27-23 1-5 52. 26-30 5-1
53. 17-13 1-6 54. 15-10 6-15-24
55. 23-27 24-31 56. 30-26 31-22
57. 13-17 22-13

Where did I go wrong and how can i prevent it in the future-thanks.

Anthony