Set it up on the chessboard and fed the position to a few very strong computer chess programs. They all came up with the conclusion the guy is alive and well somewhere. You'll get a phone call in the middle of the night one day, dear uncle in Australia. In the meantime, many commentators are having fun developing theories. We need one for this: what is a matzeva doing for a man who is alive?
2. Suicide ? Yeah. Dark evil government.
3. #2 Aye, but which government?
The only piece of information that can be confirmed with any degree of certainty is that Zygier, an Australian citizen, was being hounded by the Australian intelligence, accused of being a "Mossad agent", which he hotly denied.
The rest is commentary.