Blog: Challenge Questions

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04/30/2022 12:00 AM Beer Can Blueprints (May '22 Challenge Question)
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Last post: 05/23/2022 4:33 PM
26 1025
03/31/2022 12:00 AM A Spicy, Open-Ended Design Solution (April '22 Challenge Question)
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Last post: 04/22/2022 2:12 PM
14 573
02/28/2022 12:00 AM Challenge Question: Global Adventurer (March 2022)
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Last post: 03/28/2022 11:24 AM
31 863
01/30/2022 12:00 AM Challenge Question: Buckets and Quarts (Jan. 2022)
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Last post: 02/22/2022 8:34 AM
9 838
12/31/2021 12:00 AM CR4 Challenge Question: Big clock in a New Year (Jan. 2022)
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Last post: 01/26/2022 9:28 PM
38 750
11/30/2021 12:00 AM CR4 Challenge Question: Remember, no googleing (Dec. 2021)
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Last post: 12/20/2021 11:19 AM
15 969
10/31/2021 12:00 AM Four Dogs Squared: November 2021 challenge question
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Last post: 11/22/2021 3:23 PM
29 1361
09/30/2021 12:00 AM NYC Love Triangle (Oct. 2021 Challenge Question)
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Last post: 10/27/2021 2:32 PM
13 987
08/31/2021 12:00 AM Two Trains, a Bird and Crash (Sept. 2021 Challenge Question)
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Last post: 09/28/2021 1:58 PM
86 1471
07/31/2021 12:00 AM Broken Billiard Balls (August 2021 Challenge Question)
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Last post: 09/01/2021 1:30 PM
33 1458
06/30/2021 12:00 AM A suspicious suitcase and a boat (July 2021 Challenge Question)
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Last post: 07/26/2021 11:41 AM
27 1356
05/31/2021 12:00 AM Which Light Switch?
Pathfinder Tags: challenge question
Last post: 03/01/2022 5:02 AM
17 1662
04/30/2021 12:00 AM Missing Operators: May 2021 Challenge Question
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Last post: 05/21/2021 3:05 PM
8 774
03/30/2021 12:00 AM Heavy Riddle: April 2021 Challenge Question
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Last post: 05/03/2021 8:28 PM
30 1517
02/28/2021 12:00 AM Squares squared: March 2021 Challenge Question
Pathfinder Tags: challenge question
Last post: 05/13/2021 10:00 AM
64 1426
02/01/2021 12:00 AM What Am I? (Feb 2021 Challenge Question)
Pathfinder Tags: challenge question
Last post: 02/15/2021 2:13 PM
63 2408
12/31/2020 5:01 PM Donut Dilemma: Newsletter Challenge (January 2021)
Pathfinder Tags: challenge question donuts
Last post: 01/07/2021 2:35 AM
15 1374
11/30/2020 5:01 PM Party Puzzle: Newsletter Challenge (December 2020)
Last post: 03/16/2021 10:44 AM
25 999
10/31/2020 5:01 PM Bamboozling Birth, Part 2: Newsletter Challenge (November 2020)
Pathfinder Tags: births challenge question
Last post: 11/24/2020 6:08 AM
47 999
09/30/2020 5:01 PM Bamboozling Births: Newsletter Challenge (October 2020)
Pathfinder Tags: births challenge question
Last post: 11/28/2020 10:41 AM
28 1012
08/31/2020 5:01 PM Marble Mania: Newsletter Challenge (September 2020)
Pathfinder Tags: challenge question marbles
Last post: 11/28/2020 12:33 PM
26 2173
07/31/2020 5:01 PM Purchasing Puzzle: Newsletter Challenge (August 2020)
Last post: 08/30/2020 4:20 PM
19 1273
06/30/2020 5:01 PM Puzzling Profits: Newsletter Challenge (July 2020)
Pathfinder Tags: challenge question profit
Last post: 07/24/2020 11:17 AM
13 1532
05/31/2020 5:01 PM Classic Cat Caper: Newsletter Challenge (June 2020)
Pathfinder Tags: cats challenge question Rats
Last post: 11/29/2020 7:28 AM
22 2569
04/30/2020 5:01 PM Prince Puzzle: Newsletter Challenge (May 2020)
Pathfinder Tags: challenge question princes
Last post: 05/20/2020 9:33 AM
18 1660
03/31/2020 5:01 PM Disconcerting Division: Newsletter Challenge (April 2020)
Pathfinder Tags: challenge question division
Last post: 04/23/2020 3:44 AM
12 1459
02/29/2020 5:01 PM Word War: Newsletter Challenge (March 2020)
Pathfinder Tags: challenge question guess puzzle word
Last post: 03/17/2020 2:18 PM
36 2822
01/31/2020 5:01 PM Explorer Explanation: Newsletter Challenge (February 2020)
Pathfinder Tags: challenge question explorer
Last post: 11/29/2020 4:00 PM
38 2094
12/31/2019 5:01 PM The Logician at the Crossroads: Newsletter Challenge (January 2020)
Last post: 01/11/2021 4:16 PM
143 1734
11/30/2019 5:01 PM Bewildering Boxes: Newsletter Challenge (December 2019)
Pathfinder Tags: box challenge question name prisoner
Last post: 12/06/2019 10:45 PM
49 1311
10/31/2019 5:01 PM Dottown Deaths: Newsletter Challenge (November 2019)
Pathfinder Tags: challenge question dottown
User-tagged by 1 user
Last post: 11/13/2019 3:19 AM
55 1662
09/30/2019 5:01 PM Tennis Teaser: Newsletter Challenge (October 2019)
Pathfinder Tags: challenge question tennis
Last post: 10/11/2019 2:17 PM
22 1140
08/31/2019 5:01 PM Night Flights: Newsletter Challenge (September 2019)
Pathfinder Tags: airport challenge question
Last post: 09/11/2019 12:36 PM
17 2642
07/31/2019 5:01 PM Pilferland Puzzle: Newsletter Challenge (August 2019)
Pathfinder Tags: challenge question mail pilferton
Last post: 12/03/2019 8:23 AM
26 2137
06/30/2019 5:01 PM Series Stumper: Newsletter Challenge (July 2019)
Pathfinder Tags: challenge question number series
Last post: 07/04/2019 3:05 PM
8 1549
05/31/2019 5:01 PM Particle Puzzle: Newsletter Challenge (June 2019)
Pathfinder Tags: challenge question particle
Last post: 06/18/2019 9:28 AM
11 1930
04/30/2019 5:01 PM Hornswoggling Swordsman: Newsletter Challenge (May 2019)
Pathfinder Tags: challenge question execution
Last post: 12/02/2020 9:21 AM
71 2401
03/31/2019 5:01 PM Challenging Charges: Newsletter Challenge (April 2019)
Pathfinder Tags: challenge question physics
Last post: 04/07/2019 4:13 PM
8 830
02/28/2019 5:01 PM Spring Stumper: Newsletter Challenge (March 2019)
Pathfinder Tags: challenge question word puzzle
Last post: 04/03/2019 7:04 PM
37 2610
01/31/2019 5:01 PM Onerous Odds: Newsletter Challenge (February 2019)
Pathfinder Tags: challenge question odds
Last post: 02/07/2019 9:40 AM
25 983
12/30/2018 5:01 PM The Ol' Bulb Drop: Newsletter Challenge (January 2019)
Pathfinder Tags: bulb drop challenge question
Last post: 02/01/2019 6:03 PM
42 2619
11/30/2018 5:01 PM Superluminal Surprise: Newsletter Challenge (December 2018)
Last post: 12/27/2018 9:35 AM
7 834
10/31/2018 5:01 PM Infrasound Inquiry: Newsletter Challenge (November 2018)
Last post: 11/13/2018 4:50 PM
31 951
09/30/2018 5:01 PM Obfuscated Orbit: Newsletter Challenge (October 2018)
Pathfinder Tags: challenge question satellite
Last post: 10/18/2018 9:24 AM
13 1477
08/31/2018 5:01 PM Rubik's Riddle: Newsletter Challenge (September 2018)
Pathfinder Tags: challenge question Rubik's Cube
Last post: 09/17/2018 7:24 AM
36 1245
07/31/2018 5:01 PM Lightning Safety Stumper: Newsletter Challenge (August 2018)
Pathfinder Tags: challenge question lightning
Last post: 08/28/2018 11:34 AM
34 1759
06/30/2018 5:01 PM Suspicious Signals: Newsletter Challenge (July 2018)
Pathfinder Tags: astronomy challenge question
Last post: 07/19/2018 2:33 PM
24 1126
05/31/2018 5:01 PM Tortuous Tuning: Newsletter Challenge (June 2018)
Pathfinder Tags: challenge question piano tuning
Last post: 06/19/2018 11:17 PM
31 1431
04/30/2018 5:01 PM Ancient Arithmetic: Newsletter Challenge (May 2018)
Last post: 05/10/2018 11:37 AM
24 1891
03/31/2018 5:01 PM Pollination Puzzle: Newsletter Challenge (April 2018)
Pathfinder Tags: challenge question pollination
Last post: 04/04/2018 4:00 PM
16 1459
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