YankeeJim: There was one similar where a guy was found hanging from a ceiling beam in an empty room with a puddle under him. The question was how did he do it.
There is a large wooden barn. The barn is completely empty except for a dead man hanging from the middle of the central rafter. The rope around his neck is ten feet long and his feet are three feet off the ground. The nearest wall is 20 feet away from the man. It is not possible to climb up the walls or along the rafters. The man hanged himself, how?
As you've said it, he was standing on a block of ice and when it melted...........