The problem covered by TS4088 was caused by graphics chips with a Latent defect being installed in MacBook pro models for a certain period. If you never upgraded the software, you never saw any problems.
If you upgraded to a new version of Mac OS X it tended to use the chips differently, and sometimes problems showed up.
Eventually Apple figured out what was causing this and came up with a separate test for the problem -- the Video Switching Test or VST Test. It takes only a few minutes to run, and ends in a spectacular PASSED or FAILED banner on the screen. It is not unreasonable to ask them to run it on the spot in front of you.
The standard overnight diagnostic loop test does NOT find this problem.
Once you know whether you have this problem or whether your Mac died from other causes, you can try to negotiate. Very few have had the repair covered after the time period has fully expired without some unusual circumstances. You can always ask (but they can always say no.)
The List price on a motherboard replacement is about US$700. Some Users have been able to get the Store Manager to allow them access to Depot Repair. For under US$350, they send your MacBook to a Repair Depot, and it is returned in about a week with all listed problems addressed for that flat rate.
I would expect in a country with no Apple stores and no Depots that repair rules would get interpreted "by the book". You can always ask (but they can always say no.)