Right-i-o,
The answer and winners have now been published in The Independent on Saturday 5th April so the answer can now be posted here.
Yours,
Mike
The Baliszewski Quiz The quiz generated the largest response in the fourteen year history of this column so thank you to all who took the time to enter. Edward Baliszewksi would have been greatly impressed.
There were three moves to consider: (a) bar/23, 13/11, 6/4(2); (b) bar/23, 13/11, 18/16(2)* and (c) bar/23, 18/16*, 6/4(2).
What is black’s game plan? Given that maroon’s two rear men are stranded where they started the obvious plan is to prime those two men (remember, prime an anchor, attack a lone back man). How do the three moves play to that plan?
(c) can quickly be discarded. Leaving four blots strewn around when your opponent has the stronger home board is not a good idea. (b) was chosen by just under half the entrants. It has the advantage of gaining ground in the race but doesn’t really set maroon any significant problems as black’s home board remains undeveloped.
(a) is the right move for the following reasons: it plays directly to the correct game plan by creating a broken four-point prime with the threat of quickly making it a five-point prime; it unstacks the 6-pt; it makes many of maroon’s subsequent rolls difficult to play and crucially, after all but the best of maroon’s rolls, it will give black a powerful double next turn and maroon, at best, will have a borderline take.
The ability to look ahead and see that move (a) would give maroon a very difficult cube decision next turn was the crucial factor that separated the winners from the very large number of correct entries.
Congratulations to the three winners: Malcolm Robertson, Richard Munitz and Demetris Kordoulos.
Many thanks to Chris Bray who writes the backgammon column in The Independent on Saturday magazine from which this article is reproduced with permission.
Quiz also available at:
http://www.backgammoninlondon.com/quizzes/00.html