World Championship Match 2017, Game 12

Discussion and analysis about a full game.

World Championship Match 2017, Game 12

Postby Ingo_Zachos on Wed Sep 13, 2017 12:47 pm

Borghetti missing opportunity!
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As was expected after game 11, World Champion Michele Borghetti took the initiative in game 12. And challenger Sergio Scarpetta trusted an old recommendation from a standard opening book that is however, refuted.
Scarpetta, not knowing about the improvement on published play, had no choice but to go into a database loss that had already been shown by George Miller in a 2001 correspondence game against Al Lyman.

After he found the winning moves, Michele however faltered in converting his advantage when he played 18. ... 23-19 ?! instead of the winning 18. ...28-24.

Sergio Scarpetta thus maintains his lead by three games. Will this missed golden opportunity affect the play of the champion ? Is challenger Scarpetta not as versed in published play as it seemed?


[Event "WCM 2017 - round-6 - game-12"]
[Year "2017"]
[Red "SCARPETTA Sergio"]
[White "BORGHETTI Michele"]
[Result "1/2-1/2"]

1. 11-15 23-18 2. 12-16 18x11 3. 8x15 24-20 4. 9-14 20x11 5. 7x16 22-17 6. 4-8 26-23 7. 15-19 31-26 8. 6-9 17-13 9. 10-15 13x6 10. 2x9 25-22 11. 14-18 23x14 12. 9x25 29x22 13. 8-12 27-24 14. 16-20 21-17 15. 20x27 32x16 16. 12x19 26-23 17. 19x26 30x23 18. 3-8 23-19 (A) 19. 15x24 28x19 20. 1-6 22-18 21. 6-9 17-13 {Draw} 1/2-1/2

(A) 18. ... 28-24! wins for White.
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Re: World Championship Match 2017, Game 12

Postby Alex_Moiseyev on Wed Sep 13, 2017 3:04 pm

Ingo_Zachos wrote:old recommendation from a standard opening book
This error was first published in "Basic Checkers" volume 5, Pg. 47 - analyses from M. Tinsley and D. Lafferty. Later it was published in Solid Checkers, Part 5, Pg. 41, Variation 7. I also think Don Lafferty was in this loss later but his opponent missed this chance.

Here is position where red made a losing move:

Red to move and draw
Image
1-6* draw, 10-15? loses

And here is where Miki missed a win:

White to move and win
Image
28-24*

Continue from diagram:

18. .... 28-24 19. 1-6 17-14 20. 6-9 14-10 21. 9-14 10-7 22. 8-12 7-2 23. 5-9 2-7 24. 9-13 7-11 25. 14-17 11x18 26. 17x26 24-20 27. 26-31 23-19 White Wins

I am wondering if Miki was aware of this correction "Basic Checkers" or he corrected M. Tinsley and D. Lafferty across the board ? Unfortunately correction was incomplete :twisted:
I am playing checkers, not chess.
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