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10/31/2026 12:00 AM Odometer Delight (Oct. 2026 Challenge Question)
Pathfinder Tags: challenge question
Last post: 11/12/2026 8:12 PM
11 337
10/01/2026 12:00 AM Breaking up a horseshoe (Oct. 2026 Challenge Question)
Pathfinder Tags: challenge question
Last post: 10/01/2026 11:22 PM
3 827
08/31/2026 12:00 AM The Line Illusion (September 2026 Challenge Question)
Pathfinder Tags: challenge question
Last post: 09/05/2026 6:50 AM
5 584
07/31/2026 12:00 AM Chess Test (August 2026 Challenge Question)
Pathfinder Tags: challenge question
Last post: 08/28/2026 8:30 AM
22 450
06/30/2026 12:00 AM Friendly Wager (July 2026 Challenge Question)
Pathfinder Tags: challenge question
Last post: 08/10/2026 11:28 AM
12 680
05/31/2026 12:00 AM Sensors and Senseless (June 2026 Challenge Question)
Pathfinder Tags: challenge question
Last post: 06/01/2026 1:41 PM
3 354
04/30/2026 12:00 AM Who Watches the Watchmen? (May 2026 Challenge Question)
Pathfinder Tags: challenge question
Last post: 05/29/2026 11:09 AM
17 651
03/31/2026 12:00 AM Climbing a Ladder in a Pipe (April 2026 Challenge Question)
Pathfinder Tags: challenge question
Last post: 04/29/2026 11:47 AM
19 679
02/28/2026 12:00 AM Map of the Mystery Maze (March 2026 Challenge Question)
Pathfinder Tags: challenge question
Last post: 04/17/2026 3:56 PM
9 1036
01/31/2026 12:00 AM Like Ships Passing (February 2026)
Pathfinder Tags: challenge question
Last post: 02/19/2026 3:07 AM
19 663
12/31/2025 12:00 AM Winter Wonders (January 2026 Challenge Question)
Pathfinder Tags: challenge question
Last post: 02/25/2026 5:53 PM
6 718
11/30/2025 12:00 AM Minesweepers Mapping (December 2025 Challenge Question)
Pathfinder Tags: challenge question
Last post: 12/13/2025 11:21 AM
23 516
10/31/2025 12:00 AM Inside the Wire (November 2025 Challenge Question)
Pathfinder Tags: challenge question
Last post: 11/23/2025 3:44 PM
25 691
09/30/2025 12:00 AM Steam Train Showtime (Oct. 2025 Challenge Question)
Pathfinder Tags: challenge question
Last post: 12/28/2025 6:00 AM
5 711
08/31/2025 12:00 AM Algebraic Enigma (September 2025 Challenge Question)
Pathfinder Tags: challenge question
Last post: 09/23/2025 11:58 AM
5 1051
07/31/2025 12:00 AM 10 Questions to Find a Number (August 2025 Challenge Question)
Pathfinder Tags: challenge question
Last post: 08/13/2025 4:48 PM
13 569
06/30/2025 12:00 AM Pizza Dividends (July 2025 Challenge Question)
Pathfinder Tags: challenge question
Last post: 07/22/2025 9:30 AM
4 492
05/31/2025 12:00 AM Air Show Show-Off (June 2025 Challenge Question)
Pathfinder Tags: challenge question
Last post: 06/25/2025 3:51 PM
5 479
04/20/2025 12:00 AM The Will of A Will (May 2025 Challenge Question)
Pathfinder Tags: challenge question
Last post: 05/27/2025 3:20 PM
14 502
03/31/2025 12:00 AM Fire Spiral (April 2025 Challenge Question)
Pathfinder Tags: challenge question
Last post: 05/01/2025 7:04 AM
9 620
02/28/2025 12:00 AM A Cat Dreams of Mice (March 2025 Challenge Question)
Pathfinder Tags: challenge question
Last post: 05/13/2025 10:29 AM
17 482
01/31/2025 12:00 AM Snowball Fight Strategy (February '25 Challenge Question)
Pathfinder Tags: challenge question
Last post: 02/21/2025 10:35 AM
3 561
12/31/2024 12:00 AM Transatlantic Encounters (January 2025 Challenge Question)
Pathfinder Tags: challenge question
Last post: 01/23/2025 10:07 AM
11 750
11/30/2024 12:00 AM Inconsistent Cash (December 2024 Challenge Question)
Pathfinder Tags: challenge question
Last post: 12/19/2024 7:23 AM
14 651
10/31/2024 12:00 AM Getting Dressed in the Dark (Nov. 2024 Challenge Question)
Pathfinder Tags: challenge question
Last post: 12/30/2024 2:37 PM
13 597
09/30/2024 12:00 AM Imbibition Equations (October 2024 Challenge Question)
Pathfinder Tags: challenge question
Last post: 10/27/2024 11:25 AM
17 971
08/31/2024 12:00 AM Envelopes of Money (Sept. 2024 challenge question)
Pathfinder Tags: challenge question
Last post: 09/23/2024 9:37 AM
26 955
07/31/2024 12:00 AM The Time Now is 2:10 p.m. (August 2024 Challenge Question)
Pathfinder Tags: challenge question
Last post: 08/08/2024 10:03 AM
8 857
06/30/2024 12:00 AM Color Cubed (July '24 Challenge Question)
Pathfinder Tags: challenge question
Last post: 08/19/2024 6:05 AM
17 794
05/31/2024 12:00 AM Can You Spell 'Inglenook'? (June 2024 Challenge Question)
Pathfinder Tags: challenge question
Last post: 06/12/2024 6:11 AM
5 667
04/30/2024 12:00 AM "We Got A Great Big Convoy" (May 2024 Challenge Question)
Pathfinder Tags: challenge question
Last post: 05/28/2024 11:37 AM
22 849
03/21/2024 12:00 AM Wrapping Wisconsin in Toilet Paper (April 2024 challenge question)
Last post: 06/09/2024 8:13 AM
10 802
02/29/2024 12:00 AM Make It Equate Eight (March 2024 Challenge Question)
Pathfinder Tags: challenge question
Last post: 03/30/2024 11:40 AM
31 1166
01/31/2024 12:00 AM Ski Lift Mathematics (February 2024 Challenge Question)
Pathfinder Tags: challenge question
Last post: 02/26/2024 2:08 PM
34 1235
12/31/2023 12:00 AM Bent Coin Probabilities (January 2024 Challenge Question)
Pathfinder Tags: challenge question
Last post: 06/01/2024 7:04 PM
22 998
11/30/2023 12:00 AM Snail Race, Part 2 (December 2023 Challenge Question)
Pathfinder Tags: challenge question
Last post: 10/27/2024 11:38 AM
23 727
10/31/2023 12:00 AM Snail Race (November 2023 Challenge Question)
Pathfinder Tags: challenge question
Last post: 12/20/2023 7:46 AM
26 770
09/30/2023 12:00 AM Balloon Bafflement (October 2023 Challenge Question)
Pathfinder Tags: challenge question
Last post: 10/24/2023 8:30 AM
16 972
08/31/2023 12:00 AM A Deck of Cards in the Dark (September '23 Challenge Question)
Pathfinder Tags: challenge question
Last post: 10/04/2023 9:51 PM
13 878
07/31/2023 12:00 AM Counting to 1,000 by 3's (August 2023 Challenge Question)
Pathfinder Tags: challenge question
Last post: 08/02/2023 4:48 PM
6 798
06/30/2023 12:00 AM Bears and Ferries, Oh My! (July '23 Challenge Question)
Pathfinder Tags: challenge question
Last post: 07/24/2023 4:06 PM
9 1251
05/31/2023 12:00 AM Water on the Carousel (June 2023 challenge question)
Pathfinder Tags: challenge question
Last post: 06/27/2023 11:31 AM
15 854
04/30/2023 12:00 AM A Small Town Affair (May 2023 Challenge Question)
Pathfinder Tags: challenge question
Last post: 07/11/2023 9:34 AM
24 1200
03/31/2023 12:00 AM Best Bets vs. Russian Roulette (April '23 Challenge Question)
Pathfinder Tags: challenge question
Last post: 04/26/2023 10:10 AM
20 1035
03/01/2023 8:46 AM An Offset Sunrise (March '23 Challenge Question)
Pathfinder Tags: challenge question
Last post: 03/28/2023 2:39 PM
35 1059
01/31/2023 12:00 AM Back to 48 U.S. States? (February 2023 Challenge Question)
Pathfinder Tags: challenge question
Last post: 05/09/2023 4:41 PM
39 1184
12/31/2022 12:00 AM Unlocking Logic (Jan. 2023 Challenge Question)
Pathfinder Tags: challenge question
Last post: 01/30/2023 9:45 AM
16 880
11/30/2022 12:00 AM Dominoes on a Checkerboard (Dec. 2022 Challenge Question)
Pathfinder Tags: challenge question
Last post: 12/02/2022 2:24 PM
11 677
10/31/2022 12:00 AM Mirror, Mirror on the Wall (November '22 Challenge Question)
Pathfinder Tags: challenge question
Last post: 11/21/2022 11:05 AM
28 1248
09/30/2022 12:00 AM A Spooky Challenge Question with the Grim Reaper (Oct. 2022)
Pathfinder Tags: challenge question
Last post: 11/01/2022 4:05 PM
34 1135
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