"I'll learn as we go," replied Sim.
This pleased the man and he looked at Sim warily, but not unkindly.
"This much I will tell you," offered the man generously. "If you die, I
will give your mate shelter and she will live, as she pleases, because
she is the wife of a good man."
Sim nodded swiftly. "I am ready," he said.
"The rules are simple. We do not touch each other, save with stones.
The stones and the sun will do either of us in. Now is the time--"