## pt 21 logic game 4

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burtonrideclub

Posts: 165
Joined: Mon Mar 03, 2008 6:10 pm

### pt 21 logic game 4

Having real difficulty with this game, maybe my heads just not in it today but I can't seem to make any good deductions. Why does J have to go 2nd? (according to the answer to number 20) Thanks for the help

Knock

Posts: 5151
Joined: Wed Jun 10, 2009 3:09 pm

### Re: pt 21 logic game 4

burtonrideclub wrote:Having real difficulty with this game, maybe my heads just not in it today but I can't seem to make any good deductions. Why does J have to go 2nd? (according to the answer to number 20) Thanks for the help

Okay so we got an advanced linear game. Set up a base of 1-4 with two dashes for each.

Rules:
1) HJ block
2) if G --> then GO block or GJ block
3) K is either week 1 or week 2
4) O is week 3
5) the product that is advertised twice appear in weeks 1/2 and 4

Additionally, J can't be in 1 and H can't be in 4, due to the HJ block

Solving #20:
The HJ block only has 3 places you can put it, 1-2, 2-3, and 3-4. If you put it at 1-2, it is okay, if you try and put it in 2-3 means that J is with O, and because G needs to be with one of either J or O in order to be placed, it can't be placed. Therefore HJ can't be put in 2-3. If you try and put it in 3-4, you end up with H with O in 4, and J with blank in 5. However, G needs to be with either J or O, and since O is taken by H, G has to be in 4 with J. However, J can't be repeated, because only 1 product is repeated, and if J is repeated, H must be repeated as well, therefore G must be repeated. However, G can only be with J, which can't be repeated for already discussed reasons, and O, which can't be repeated because it is advertised in 3, and a rule states that the product that is advertised twice appears in weeks 1/2 and 4 (so can't be 3). So therefore, the HJ block can only be placed in 1-2, and therefore J must be in 2.

Hope this helps, please let me know if you can't understand that and I can try and explain it better.