This image doesn't seem to fit the solution criteria mentioned in the article:
"The solution of the Conway puzzle is straightforward when one realizes that the three 1 × 1 × 3 blocks need to be placed so that precisely one of them appears in each 5 × 5 × 1 slice of the cube."
-- — Preceding unsigned comment added by 65.94.141.71 (talk) 15:11, 13 June 2011 (UTC)
Am I correctly observing that the middle block does not touch any of the faces? It wasn't immediately obvious to me, perhaps there is a way of positioning it so that there would be no doubt about this.