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Problem of the Week #108: May 24

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06-01-2011 , 05:52 AM

#26

angie1153

stranger

Join Date: Jun 2011 Posts: 1

but it was difficult to cover. good game dude :P

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06-21-2011 , 05:02 PM

#27

OmahaDonk

Pooh-Bah

Join Date: Apr 2011 Posts: 5,025

My first try:

Making the 7 seems pointless as he'll just make the 5 and hold there til the end. The 3 options are to make the 20, 10, or hit the 5.

I did read in some of the early ones that making either 5-point can't be that wrong, but our back men aren't in any danger right now. I like making the 10 to try to keep his back men trapped and give the back men somewhere to run (is this what you mean by prime?) later.

My first official solution:
bar/22 15/10

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06-21-2011 , 06:04 PM

#28

uberkuber

veteran

Join Date: Jul 2009 Posts: 3,043

A prime is a blockade of consecutive points made by the same player. Usually, we start talking about a prime when you have 4 or more points, therefore a 4-prime, a 5-prime or a 6-prime, also known as a full prime.

There are also broken primes. As an example, you could have 6 consecutive points of which you hold 5 of them, with the other one still up for grab in the middle.

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