"When opening a Troll Gate," recited Ikidunot reading from The Practical Odometer, "it is important to know the serial number, which will be on a bar code on the back panel. Depending on the model, it may be necessary to remove the fascia assembly first, which will be retained by 17 self-losing screws, all but three of which are not interchangeable."
"There's no actual fence, just a gate," observed Tasha astutely. "We could just walk round it."
"I don't think we're expected to do that," replied Alber't'ickle. "We're supposed to do something adventurous, like fighting a troll."
Tippy had been staring at the gate, wondering why it had to be so high and what the hieroglyphs meant that looked like pterodactyl-cup-sunflower-camel and if that was a clue.
Ha! solved the problem by flinging a stone at the gate. It rebounded with a satisfying cloionggg noise and then, after a moment, the gate began to swing slowly open, with the creaking of hinges because you have to have creaking of hinges otherwise it's not a proper gate.
A troll stood inside the now-open gate. "Wot you want?" asked the troll.
"We'd like to come through, please?"
"You can't. Only trolls can come through. It's a troll gate, see?" said the troll, pointing at where the hieroglyphs spelled out pterodactyl-cup-sunflower-camel. "Can't you read Coptic?"
As the gate slowly swung shut, Alber't'ickle slipped stealthily through and started unscrewing the inspection cover on the back of the gatepost, exposing the arcane mechanism inside. Don't cut the yellow wire, don't cut the yellow wire .... He was presented with an array of large, square glyphs with numbers on them. This was obviously a puzzle where you have to press in the stones one at a time in the right sequence, except that was too obvious. Using his eight tentacles, he pressed stones 3,1,4,5,9,2,6 and 8 simultaneously and was rewarded with an unrumbling noise. Nothing else happened, just the noise, but at least it was something.
A troll boot kicked him lightly in the back. "Wot you doing?"
Alber't'ickle had to think fast ...