Historical clue formulations

• Loggers' competition — 2026-07-04
• Lumberjacks' competition — 2025-05-18
• Loggers' competition — 2021-05-02
• Loggers' contest — 2017-09-07
• Loggers' jamboree — 2015-09-13
• Competition where the last one standing wins — 2014-10-18
• Loggers' contest — 2014-09-17
• Loggers' contest — 2010-02-05
• Lumberjack competition — 2009-08-12
• Loggers' contest — 2004-03-31
• Loggers' contest — 2000-11-15
• Lumberjacks' contest — 1996-01-14
• Lumberjacks' competition — 1994-08-23