BrainTwisters
Your weekly dose of logical and mathematical puzzling.
BrainTwister
BrainTwister #108: Expressionist
7 January 2026
BrainTwister
BrainTwister #107: Prime products
31 December 2025
BrainTwister
BrainTwister #106: Indices behaving oddly
24 December 2025
BrainTwister
BrainTwister #103: O difference tree
10 December 2025
BrainTwister
BrainTwister #104: Juggling jugs
10 December 2025
BrainTwister
BrainTwister #105: Interesting numbers
10 December 2025
BrainTwister
BrainTwister #102: Ladderet
3 December 2025
BrainTwister
BrainTwister #101: Knight’s progress
26 November 2025
BrainTwister
BrainTwister #100: Tricky angles
19 November 2025
BrainTwister
BrainTwister #99: Hat Trick
12 November 2025
BrainTwister
BrainTwister #98: S⋅P numbers
5 November 2025
BrainTwister
BrainTwister #97: Picking and choosing
29 October 2025
BrainTwister
BrainTwister #96: Multiplying dice
22 October 2025
BrainTwister
BrainTwister #95: Coin roll
15 October 2025
BrainTwister
BrainTwister #94: Shape up
8 October 2025
BrainTwister
BrainTwister #93: Counting gaps
1 October 2025