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05/31/2022 12:00 AM Choices and Coins (June 2022 challenge question)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 06/20/2022 11:23 AM
9 647
04/30/2022 12:00 AM Beer Can Blueprints (May '22 Challenge Question)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 05/23/2022 4:33 PM
26 920
03/31/2022 12:00 AM A Spicy, Open-Ended Design Solution (April '22 Challenge Question)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 04/22/2022 2:12 PM
14 511
02/28/2022 12:00 AM Challenge Question: Global Adventurer (March 2022)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 03/28/2022 11:24 AM
31 801
01/30/2022 12:00 AM Challenge Question: Buckets and Quarts (Jan. 2022)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 02/22/2022 8:34 AM
9 794
12/31/2021 12:00 AM CR4 Challenge Question: Big clock in a New Year (Jan. 2022)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 01/26/2022 9:28 PM
38 702
11/30/2021 12:00 AM CR4 Challenge Question: Remember, no googleing (Dec. 2021)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 12/20/2021 11:19 AM
15 900
11/21/2021 12:00 AM Be excellent to each other
in CR4 Welcome Wagon
Pathfinder Tags: welcome wagon
Last post: 01/09/2022 7:30 AM
11 189
11/20/2021 12:00 AM Moderator Justice
in CR4 Welcome Wagon
Pathfinder Tags: welcome wagon
Last post: 11/20/2021 12:00 AM
0 75
11/19/2021 12:00 AM Commenting best practices
in CR4 Welcome Wagon
Last post: 12/08/2021 6:37 AM
4 60
11/18/2021 12:00 AM Posting best practices
in CR4 Welcome Wagon
Last post: 11/26/2021 4:46 AM
1 43
11/17/2021 12:00 AM Political discourse not welcome (and other prohibited topics)
in CR4 Welcome Wagon
Last post: 11/17/2021 12:00 AM
0 67
11/16/2021 12:00 AM Please tattle on each other
in CR4 Welcome Wagon
Pathfinder Tags: welcome wagon
Last post: 11/19/2021 9:20 AM
2 98
11/15/2021 11:06 AM Remember to vote for threads and comments
in CR4 Welcome Wagon
Pathfinder Tags: welcome wagon
Last post: 11/19/2021 9:23 AM
2 51
10/31/2021 12:00 AM Four Dogs Squared: November 2021 challenge question
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 11/22/2021 3:23 PM
29 1320
09/30/2021 12:00 AM NYC Love Triangle (Oct. 2021 Challenge Question)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 10/27/2021 2:32 PM
13 941
08/31/2021 12:00 AM Two Trains, a Bird and Crash (Sept. 2021 Challenge Question)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 09/28/2021 1:58 PM
86 1393
07/31/2021 12:00 AM Broken Billiard Balls (August 2021 Challenge Question)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 09/01/2021 1:30 PM
33 1413
06/30/2021 12:00 AM A suspicious suitcase and a boat (July 2021 Challenge Question)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 07/26/2021 11:41 AM
27 1321
05/31/2021 12:00 AM Which Light Switch?
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 03/01/2022 5:02 AM
17 1614
04/30/2021 12:00 AM Missing Operators: May 2021 Challenge Question
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 05/21/2021 3:05 PM
8 743
03/30/2021 12:00 AM Heavy Riddle: April 2021 Challenge Question
in Challenge Questions
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Last post: 05/03/2021 8:28 PM
30 1477
02/28/2021 12:00 AM Squares squared: March 2021 Challenge Question
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 05/13/2021 10:00 AM
64 1390
02/21/2021 12:00 AM Five Ways to Make Your Employees Feel Valued
by ahorner_22 in Five Ways to Make Your Employees Feel Valued
Last post: 03/03/2021 5:09 PM
by Anonymous Poster
 7 249
02/01/2021 12:00 AM What Am I? (Feb 2021 Challenge Question)
in Challenge Questions
Pathfinder Tags: challenge question
Last post: 02/15/2021 2:13 PM
63 2321
12/31/2020 5:01 PM Donut Dilemma: Newsletter Challenge (January 2021)
in Challenge Questions
Pathfinder Tags: challenge question donuts
Last post: 01/07/2021 2:35 AM
15 1344
11/30/2020 5:01 PM Party Puzzle: Newsletter Challenge (December 2020)
in Challenge Questions
Last post: 03/16/2021 10:44 AM
25 973
10/31/2020 5:01 PM Bamboozling Birth, Part 2: Newsletter Challenge (November 2020)
in Challenge Questions
Pathfinder Tags: births challenge question
Last post: 11/24/2020 6:08 AM
47 967
10/04/2020 6:10 AM Pesky Ellipse Circumference
by Jorrie in Relativity and Cosmology
Pathfinder Tags: circumference ellipse perimeter
Last post: 11/30/2020 12:03 PM
by Haymaker
 8 400
09/30/2020 5:01 PM Bamboozling Births: Newsletter Challenge (October 2020)
in Challenge Questions
Pathfinder Tags: births challenge question
Last post: 11/28/2020 10:41 AM
28 980
08/31/2020 5:01 PM Marble Mania: Newsletter Challenge (September 2020)
in Challenge Questions
Pathfinder Tags: challenge question marbles
Last post: 11/28/2020 12:33 PM
26 2137
08/24/2020 7:15 AM SpaceProperTime Diagrams and the Central Singularity
by Jorrie in Relativity and Cosmology
Pathfinder Tags: einstein general relativity
Last post: 08/25/2020 10:56 AM
by Jorrie
 4 287
08/17/2020 3:00 AM SPT-Acceleration and the Equivalence Principle
by Jorrie in Relativity and Cosmology
Last post: 08/18/2020 12:13 PM
by Jorrie
 8 170
08/11/2020 12:00 AM Space-Propertime Structure and Acceleration II
by Jorrie in Relativity and Cosmology
Pathfinder Tags: acceleration Propertime spacetime
Last post: 08/18/2020 10:38 AM
by canadianslidewinder
 8 182
08/07/2020 5:00 AM Space-Propertime Structure and Acceleration
by Jorrie in Relativity and Cosmology
Pathfinder Tags: Propertime spacetime
Last post: 08/08/2020 2:13 PM
by Jorrie
 6 225
08/04/2020 6:00 PM Spacetime Structure
by Jorrie in Relativity and Cosmology
Last post: 08/12/2020 5:36 AM
by Just an Engineer
 8 152
07/31/2020 5:01 PM Purchasing Puzzle: Newsletter Challenge (August 2020)
in Challenge Questions
Last post: 08/30/2020 4:20 PM
19 1241
07/23/2020 6:00 PM Roger Penrose and Conformal Cyclic Cosmology
by Jorrie in Relativity and Cosmology
Last post: 07/29/2020 3:06 AM
by Jorrie
 9 209
06/30/2020 5:01 PM Puzzling Profits: Newsletter Challenge (July 2020)
in Challenge Questions
Pathfinder Tags: challenge question profit
Last post: 07/24/2020 11:17 AM
13 1502
05/31/2020 5:01 PM Classic Cat Caper: Newsletter Challenge (June 2020)
in Challenge Questions
Pathfinder Tags: cats challenge question Rats
Last post: 11/29/2020 7:28 AM
22 2499
04/30/2020 5:01 PM Prince Puzzle: Newsletter Challenge (May 2020)
in Challenge Questions
Pathfinder Tags: challenge question princes
Last post: 05/20/2020 9:33 AM
18 1628
04/03/2020 10:00 AM Engineer "helpers"
by M-ReeD in The Engineer's Notebook
Pathfinder Tags: Coronavirus engineers
Last post: 04/03/2020 10:00 AM
by M-ReeD
 0 336
03/31/2020 5:01 PM Disconcerting Division: Newsletter Challenge (April 2020)
in Challenge Questions
Pathfinder Tags: challenge question division
Last post: 04/23/2020 3:44 AM
12 1421
03/20/2020 9:07 AM Some thoughts on telecommuting during a pandemic
by M-ReeD in The Engineer's Notebook
Pathfinder Tags: remote Telecommuting
Last post: 05/03/2020 8:08 PM
by TechnoTanveer
 18 451
03/13/2020 1:30 PM Wine pours from Italian plumbing
by M-ReeD in The Engineer's Notebook
Pathfinder Tags: plumbing wine
Last post: 03/14/2020 11:12 PM
by StandardsGuy
 3 276
03/06/2020 12:00 AM Join Me as I Lend to the Coronavirus Hysteria, Won't You?
by M-ReeD in The Engineer's Notebook
Pathfinder Tags: Coronavirus Shield
Last post: 03/18/2020 10:07 PM
by canadianslidewinder
 56 467
02/29/2020 5:01 PM Word War: Newsletter Challenge (March 2020)
in Challenge Questions
Pathfinder Tags: challenge question guess puzzle word
Last post: 03/17/2020 2:18 PM
36 2780
02/28/2020 12:00 PM App May Prevent You from Getting the Coronavirus
by M-ReeD in The Engineer's Notebook
Pathfinder Tags: app Coronavirus
Last post: 03/04/2020 12:19 PM
by wmerryall
 12 241
02/14/2020 12:00 PM Airbnb uses AI to scan social media for psychos
by M-ReeD in The Engineer's Notebook
Pathfinder Tags: AI Internet
Last post: 02/24/2020 1:52 AM
by JWthetech
 9 183
02/10/2020 8:00 AM Engineering Snake Oil: Does Magnetic Therapy Work?
by Hannes in The Engineer's Notebook
Pathfinder Tags: magnetic therapy snake oil
Last post: 02/22/2020 7:32 PM
by phoenix911
 26 462
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