The explosion wasn't fire. It was a blooming outward, silent and perfect.
"Maths Playground cleared," she said. "Another day, another variable." maths playground x trench run
"Stay on the line, Gold Leader," crackled a voice like a protractor scraping glass. "The exhaust port is now a with a nested radical at its core. You’ll need to solve for x before your torpedo can invert the topology." The explosion wasn't fire