Ok. Let me guess what are the official sine qua nons of GC side:
1- Withdrawal of Turkish troops.(Does that mean that Greek troops can stay?)
2- No guarantorship of foreign countries.
3- Repatriation of all settlers.
4- Return of all refugees.
5- Turkey to pay compensation the damage she caused by invading and loss of use of past 30 years.
6- Proportional to population percentage land ownership: %18-%82.
7- Freedom of movement, rgiht to buy property and right to settlement.
8- A centralised, majoritarian federal system where majority rules.
I don't think anything less that 8 sine qua nons would be satisfactory for Hellen's ruling elite. If someday they have been obliged to accept a solution plan that does not provide any of the above sine qua nons; I'm sure they would make a new Akritas plan to get them all...
So... If probability of the solution is %50, viability of the solution seems %0