Historical clue formulations

• X, Y and sometimes Z — 2025-05-29
• Origin crossers — 2025-05-21
• x and y, on a graph — 2024-12-09
• Cuts — 2024-09-01
• Lumberjacks swing them — 2023-10-16
• Chops — 2022-09-23
• x, y and z — 2021-09-12
• x and y, on a graph — 2021-06-14
• Chops — 2020-12-26
• x and y, on a graph — 2020-09-22
• Lets go — 2020-07-03
• Forest swingers — 2020-06-06
• Fires — 2020-05-27
• Cans — 2020-03-15
• Choppers — 2018-03-30
• Lines of a plane — 2017-04-26
• x, y and z — 2016-07-15
• Plane dividers — 2015-08-05
• x and y, on a graph — 2015-06-08
• x and y, in math — 2015-03-24
• Fires — 2014-03-28
• Lumberjacks' tools — 2013-11-12
• Alternatives to saws — 2013-08-08
• Cans — 2012-12-18
• x, y and z — 2012-01-15
• Gives the heave-ho — 2011-02-01
• Graph lines — 2010-11-03
• Graph lines — 2010-04-22
• Eighty-sixes — 2010-03-21
• Lumberjacking tools — 2009-11-02
• x, y and z, in math — 2009-10-27
• Cans — 2009-07-23
• Lumberjacks' tools — 2009-05-25
• x and y, on a graph — 2009-04-06
• Dungeons & Dragons weapons — 2008-07-09
• Lines on planes — 2008-03-29
• Dumps — 2007-12-15
• Choppers — 2007-11-16
• x, y and z — 2007-10-18
• Cans — 2006-11-18
• Fires — 2006-10-17
• Pink-slips — 2006-09-21
• Graph features — 2006-07-19
• Turning points — 2005-08-06
• Good fellers — 2005-06-26
• X and Y, on a graph — 2004-06-02
• Gets rid of — 2004-04-18
• Cancels — 2004-04-09
• Bounces — 2004-01-18
• Graph lines — 2003-04-13