Guest Posted October 13, 2010 Report Share Posted October 13, 2010 You have 9 counters. Black on one side and white on the other. HOWEVER: Every time you turn a counter over you must also turn over the counter adjacent to it - both vertically and horizontally. What is the minimum counter turns you need to make, to change the image on the left to the image on the right? Quote Link to comment Share on other sites More sharing options...
0 Guest Posted October 13, 2010 Report Share Posted October 13, 2010 its 9 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted October 13, 2010 Report Share Posted October 13, 2010 top right, bottom right, bottom left, top left, top middle, right middle, bottom middle, left middle, centre Quote Link to comment Share on other sites More sharing options...
0 Guest Posted October 13, 2010 Report Share Posted October 13, 2010 (edited) i'm pretty sure... its 9, you need to flip each counter, (and the adjacent ones on each flip.) order doesnt matter. Edited October 13, 2010 by phillip1882 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted October 14, 2010 Report Share Posted October 14, 2010 That didnt take too long, congrats to kristmark1 its 9 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted October 14, 2010 Report Share Posted October 14, 2010 Congrats! Quote Link to comment Share on other sites More sharing options...
0 Guest Posted October 14, 2010 Report Share Posted October 14, 2010 thanks Quote Link to comment Share on other sites More sharing options...
Question
Guest
You have 9 counters. Black on one side and white on the other.
HOWEVER: Every time you turn a counter over you must also turn over the counter adjacent to it - both vertically and horizontally.
What is the minimum counter turns you need to make, to change the image on the left to the image on the right?
Link to comment
Share on other sites
6 answers to this question
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.