The Checker Maven

Man in the Middle

20160531-mitm.jpg

"Man in the middle" can have several meanings. In the computer security world, it refers to a cyberattack based on intercepting--- getting in the middle of--- a network path. In the baseball example shown above, the baserunner is caught between bases. In general, being "the man in the middle" isn't a very good thing.

Not so in today's checker problem, which is credited to old-time checkerist D. Robinson of Glasgow. Let's have a look.

WHITE
20160531-mitm.png
BLACK
Black to Play and Draw

B:WK29,24,12:BK23,K7.

Black has two men in the middle (actually, two kings). But the title of our problem is "man" in the middle, not "men." That's a bit of a hint toward finding a somewhat surprising draw for Black.

Can you solve it, or will you get caught in the middle? Click your mouse (the left button, not the middle one) on Read More when you're ready to check your solution.20050904-symbol.gif



Solution

7-11---A 29-25 23-18* 25-21 18-14 24-20---B 14-9* 21-17 9-5---C 17-13 5-1 13-9 1-5 to a draw---D.

A---A necessary step, jamming up the White men.

B---This move is the computer's choice. Moving the White king around would accomplish little. But now the Black king has a firm grip on the two White men.

C---9-6 similar.

D---White cannot make any progress. The Black king on 11, our powerful "man in the middle," can't be displaced.

Did you solve it, or just do middling well? In either case, we hope you enjoyed today's problem.

20160531-mitm2.jpg
07/09/16 - Category: Problems
You can email the Webmaster with comments on this article.



The Checker Maven is produced at editorial offices in Honolulu, Hawai`i, as a completely non-commercial public service from which no income is obtained or sought. Original material is Copyright © 2004-2026 Avi Gobbler Publishing. Other material is public domain, AI generated, as attributed, or licensed under CC1, CC2, CC3 or CC4 and the various CC options. Information presented on this site is offered as-is, at no cost, and bears no express or implied warranty as to accuracy or usability. You agree that you use such information entirely at your own risk. No liabilities of any kind under any legal theory whatsoever are accepted. The Checker Maven is dedicated to the memory of Mr. Bob Newell, Sr.