On the OBS page I asked

"1999.06.10 HELP !! In soma addict 1.2 Eben Atwater. Concord. Mass, ask: "What is the tallest stable structure you can build with the 7 piece SOMA set ? ..."

Well that figure itself is still unsolved

But the question: What is the tallest stable structure Is here answered by Jay Chan

To see other tall figures, check fig 153, 168?, 169

Jay writes:
I found a higher diagonally stacking soma pattern than the one posted on your site (#153).
your's is 8.5*root(2) units high and mine is 9*root(2).

/00......../11......../00........ /005......./155......./000....... /.000....../.566....../.006...... /..00....../..62....../..00...... /...0000.../...2223.../...0000... /.....00.../.....33.../.....00... /......000./......344./......000. /......0000/......4477/......0070 /........0./........7./........0.

it stands on peice 7

- Submitted by Jay Chan