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So I noticed that after I created a pretty big field in Syracuse University I was unable to link certain portals. More specifically, Bird Library portal. I do have Bird Library keys, so I'm not sure why I can't link these :| Are my fields/links in the way?

Problem portal

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Some screenshots would likely be helpful in answering that question. –  kotekzot Jun 12 '13 at 0:18
    
@kotekzot I've added a screenshot, sorry t.t –  Stupid.Fat.Cat Jun 12 '13 at 0:22
    
More than likely, fields/links are in the way. I see a nice one just to the left of the highlighted portal, and that would block pretty much every portal except the one to the bottom right, and the top left on that same field. –  Phill.Zitt Jun 12 '13 at 2:40
    
I've added a more detailed answer uncovering some unclear linking mechanics, be sure to check it out! :) –  Qwerty Jan 6 at 22:39
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3 Answers

up vote 5 down vote accepted

Usually, when a portal cannot be linked, there are two possibilities:

1) the portal is out of reach. This should not be the case, since, with the configuration you've showed, you would have had range problems only with L1 portals;

2) as you correctly said, there are fields and links in the way. It's impossible to cross two links, even if they are from your own faction. With the field configuration you've created, the only portals that can be linked to the Bird Library are these (one is under the word "resonators"):

enter image description here

Creating a link from these portals, if their level is high enough, should give you no problem. The rest is blocked by the field mantained by those two same portals. That's why, as a general rule, you should try to make your links the shortest possible: you always risk to block the creation of links/fields for you or your fellow agents.

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Remember another thing: You can throw links from one that is in the outside of the field, to another that is inside. BUT, not from inside to the outside: Portal A (inside), Potal B(outside) A--->B NOO B--->A YES! Just remember it whe u want to create lot of fields in a zone. Recomendation: create the fields in the "center" and go to the biggest one. (From inside to outside) –  Shudy Jun 12 '13 at 16:55
    
@Shudy Wait, how does that work? If I have a portal outside of a field and I try to link it to a portal that's inside a field, wouldn't my link have to go through the link that forms the field? –  Stupid.Fat.Cat Jun 13 '13 at 2:07
    
@Shelby.S Yes, it would have to, but it can't. Link may not cross each other. –  Sentry Jun 13 '13 at 23:22
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@Shelby. S Example :

You have the fields created by some reason in this form

Black links has been created and you have 3 fields.

If you try to create a link from some portal that is inside from one to is outside --> is not possible.

If you try to create a link from some portal that is outside from one to is inside --> is possible.

You CANT cross a link with another one.

In this image I made, now you have 3 fields. If you throw a link from bottom left portal, to the portal in the center, you create 2 fields more, because you "cut" in a half another field.

enter image description here

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Ah I understand. Thank you –  Stupid.Fat.Cat Jun 13 '13 at 16:17
    
This is great answer which covers those weird scenarios when you think you should be able to link but you are not, but then in the end you are .. Should be accepted instead. –  Qwerty Jan 6 at 21:22
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The linkability is actually very straightforward, once you understand few simple rules.

Prerequisites:

  • Source portal must be fully deployed
  • Destination portal must be fully deployed
  • Source portal must have fewer than 7 out-going links.
    7 is a max for outgoing links. Incomming links are not capped.

If the answer to following items is NO, continue on the next step:

  1. Is source portal under a field?
  2. Is destination portal within a range?
  3. Are there any links in way?

  4. You are ready to link!

Here is an example of what a portal under a field looks like and what doesn't. Red circled portals are under a field and you won't be able to create links from them, however, you may be able to link to them.

You can link from orange circled portals.

Note that there are double and tripple fields too. (Smart-linking can boost your AP gain:) ) linking

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