Re:
TheGreenMonkey said:
Will Kruijswijk or Hesdejal try and get in the break? That should get a reaction as they are now not far from the top ten and might lead to a very high pace at start. Then it just needs someone to show some weakness to give teams an incentive to push on and we have an epic stage even if Contador does not come prepared to attack.
There is also the battle for the mountains classification that might lead there to be a real battle between Movistar and others as to who makes the break.
It could also be a quite a boring day where a reasonable break goes away quickly and is allowed to fight the stage while Astana, resigned to not winning, and Contador, not needing to attack, are happy to look at each other and ride a slowish tempo up the Mortirolo that leaves 70 riders over the top and a little bit of a sprint at the finish line.

OK, the second part is a joke.
The key to the success of a breakaway is not whether Kruijswijk, Hesjedal or some particular Movistar rider is in the breakaway or not (although all of these are pretty likely), it depends on the balance of power in the breakaway between Tinkoff and Astana and whether Tinkoff hold together as a team in the initial stages (there's no way that Astana falls apart, apart from food poisoning). Astana will want to get guys ahead so they can join up with an attacker (realistically speaking, Landa) or protect Aru after the Mortirolo. Tinkoff's goal will be to stop that happening or at least ensure they have their own guy(s) up there.
Contador's only real rivals are the Astana two-headed hydra. Astana have been clearly stronger than Tinkoff and there is a hard week left, so no way have they given up yet. Landa is as strong on the climbs as (or possibly marginally stronger than) Contador. Aru is slightly weaker, but closer in the GC, Italian and a proven competitor in the Giro, so unless he cracks is the natural leader. The only way that Landa wins is by attacking from relatively far out (this stage is ideal for this) and the attack sticking (for this Bertie needs to be isolated and Landa needs help from the top of the Mortirolo, again this is the ideal stage for this). The only way that Aru can win is by being able to stick to Bertie after a Landa attack and be able to attack if Bertie weakens. I would say that neither of these scenarios are likely due to Contador's strength and experience, but let's say they're possible. Hence, Aru's and Landa's goals are to some degree aligned. They would both prefer that someone from their team would win, but obviously they can't both win.
The start will be crazy as it's the day after a rest day and uphill from the start. I'm going to assume that a breakaway forms in which the balance of power between Astana and Tinkoff is even or slightly in the favour of Astana and Tinkoff don't fall apart before the beginning of the Mortirolo (the end of the opening).
The key to the stage is Mortirolo, the middle game. It's steep and long and there's no real advantage from drafting. After the initial charge, the weak links will have been eliminated and if Contador does not attack, at some point Astana's strength will be clearly greater than Tinkoff's. By this point, it will pay Contador to attack and climb at his own tempo. On the basis of the strengths of the riders and the GC situation, this will be less tiring than reacting to alternating attacks. I will assume that this tempo will be comfortable (relatively speaking) for Landa, but uncomfortable or unattainable by Aru. At the top of the Mortirolo, either Landa will be ahead of Bertie after an attack or with him and Aru will either be behind or hanging on for dear life. If Bertie is with Landa, then apart from the steep section at the beginning of the Aprica, everything is in his favour. The only problem happens if Landa is ahead and has support (I'm assuming that Aru will have support if he is behind). In this case, race on. I would say here though that after the Mortirolo Bertie would probabily be able to turn a fairly even situation to his advantage.
My prediction: Either Landa or Contador, but I'll go for Contador.