←
NOGGIN
Play this puzzle Play today’s Chrono

Chrono #15 — the timeline

The seven events from October 15, 2026 in order, with their years, the gaps between them, and where each card belonged as it was dealt.

The timeline

YearEventSubjectTo the next
1816Rossini's The Barber of Seville premieresArts & culture45 years
1861The Civil War begins at Fort SumterUS history14 years
1875The first Kentucky DerbySports & games18 years
1893The Chicago World's Fair unveils the first Ferris wheelUS history9 years
1902Willis Carrier designs the first modern air conditionerInventions & technology12 years
1914World War I beginsWorld history10 years
1924The first Winter Olympics, in Chamonix (the starting event)Sports & games—

The closest call: The Chicago World's Fair unveils the first Ferris wheel (1893) and Willis Carrier designs the first modern air conditioner (1902), 9 years apart — the pair most easily put the wrong way round. The widest gap: 45 years, between Rossini's The Barber of Seville premieres and The Civil War begins at Fort Sumter.

Card by card

The line started with The first Winter Olympics, in Chamonix (1924). The six cards came out in this order — each the one with the most room around it among those left, so the early ones are footholds and the last are the squeeze.

  1. Rossini's The Barber of Seville premieres — 1816. One of 2 gaps: it belonged before The first Winter Olympics, in Chamonix (1924).
  2. The first Kentucky Derby — 1875. One of 3 gaps: it belonged between Rossini's The Barber of Seville premieres (1816) and The first Winter Olympics, in Chamonix (1924), 108 years apart.
  3. Willis Carrier designs the first modern air conditioner — 1902. One of 4 gaps: it belonged between The first Kentucky Derby (1875) and The first Winter Olympics, in Chamonix (1924), 49 years apart.
  4. The Civil War begins at Fort Sumter — 1861. One of 5 gaps: it belonged between Rossini's The Barber of Seville premieres (1816) and The first Kentucky Derby (1875), 59 years apart.
  5. World War I begins — 1914. One of 6 gaps: it belonged between Willis Carrier designs the first modern air conditioner (1902) and The first Winter Olympics, in Chamonix (1924), 22 years apart.
  6. The Chicago World's Fair unveils the first Ferris wheel — 1893. One of 7 gaps: it belonged between The first Kentucky Derby (1875) and Willis Carrier designs the first modern air conditioner (1902), 27 years apart.

Previous: Chrono #14 (Wed, Oct 14) · Next: Chrono #16 (Fri, Oct 16) · All Chrono solutions

About Chrono

Chrono is Noggin’s timeline puzzle, on the second shelf: events dealt one at a time into a growing line, six cards a day, outside the daily line-up. How to play Chrono, or play today’s.