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Chrono #30 — the timeline

The seven events from October 30, 2026 in order, with their years, the gaps between them, and where each card belonged as it was dealt.

The timeline

YearEventSubjectTo the next
1803The Louisiana PurchaseUS history64 years
1867The US buys Alaska from RussiaUS history33 years
1900Women compete in the Olympics for the first time (the starting event)Sports & games33 years
1933King Kong climbs the Empire State Building on screenArts & culture35 years
1968The Prague SpringWorld history23 years
1991Freddie Mercury diesArts & culture24 years
2015SpaceX lands an orbital rocket's booster upright for the first timeSpace—

The closest call: The Prague Spring (1968) and Freddie Mercury dies (1991), 23 years apart — the pair most easily put the wrong way round. The widest gap: 64 years, between The Louisiana Purchase and The US buys Alaska from Russia.

Card by card

The line started with Women compete in the Olympics for the first time (1900). 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. SpaceX lands an orbital rocket's booster upright for the first time — 2015. One of 2 gaps: it belonged after Women compete in the Olympics for the first time (1900).
  2. The Louisiana Purchase — 1803. One of 3 gaps: it belonged before Women compete in the Olympics for the first time (1900).
  3. The Prague Spring — 1968. One of 4 gaps: it belonged between Women compete in the Olympics for the first time (1900) and SpaceX lands an orbital rocket's booster upright for the first time (2015), 115 years apart.
  4. King Kong climbs the Empire State Building on screen — 1933. One of 5 gaps: it belonged between Women compete in the Olympics for the first time (1900) and The Prague Spring (1968), 68 years apart.
  5. The US buys Alaska from Russia — 1867. One of 6 gaps: it belonged between The Louisiana Purchase (1803) and Women compete in the Olympics for the first time (1900), 97 years apart.
  6. Freddie Mercury dies — 1991. One of 7 gaps: it belonged between The Prague Spring (1968) and SpaceX lands an orbital rocket's booster upright for the first time (2015), 47 years apart.

Previous: Chrono #29 (Thu, Oct 29) · Next: Chrono #31 (Sat, Oct 31) · 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.