Experience the legacy of one of the world's oldest and most distinctive math competitions. This comprehensive volume presents the problems and solutions from the St. Petersburg Mathematical Olympiad (SPbMO) between 1992 and 2008 -- a competition renowned for its originality, oral examination format, and its roots in the celebrated Leningrad school of mathematics.Founded in 1934, the SPbMO is recognized as the first formally organized city-level mathematics contest in the world. Set in a city with deep scientific and educational traditions, the Olympiad attracts over 12,000 participants annually, from grades 6 through 11 (ages 11-18).What makes the SPbMO truly exceptional is its oral examination format, where every solution is presented verbally to a jury member -- mirroring the rigors of mathematical dialogue and reasoning in professional settings. Every problem is originally designed by local mathematicians and educators, reflecting the intellectual richness of the Leningrad mathematical culture.Perfect for students aged 11-18, math competition coaches, and educators looking for challenging and original extracurricular math content, this book is both a problem-solving resource and a cultural archive of mathematical excellence.