BrainTwisters
Your weekly dose of logical and mathematical puzzling.
BrainTwister
BrainTwister #124: Odd sums
29 April 2026
BrainTwister
BrainTwister #123: No repeats
22 April 2026
BrainTwister
BrainTwister #122: Squares and cubes
15 April 2026
BrainTwister
BrainTwister #121: Strike one
8 April 2026
BrainTwister
BrainTwister #120: Wrong method, right answer
1 April 2026
BrainTwister
BrainTwister #119: No two 2s
25 March 2026
BrainTwister
BrainTwister #118: Candles
18 March 2026
BrainTwister
BrainTwister #117: Sick sevens
11 March 2026
BrainTwister
BrainTwister #116: Curiouser and curiouser
4 March 2026
BrainTwister
BrainTwister #115: Triple flip
25 February 2026
BrainTwister
BrainTwister #114: Freestyle chess
18 February 2026
BrainTwister
BrainTwister #113: Sum chequer
11 February 2026
BrainTwister
BrainTwister #112: Pronic numbers
4 February 2026
BrainTwister
BrainTwister #111: Pascal shaved
28 January 2026
BrainTwister
BrainTwister #110: Six, seven
21 January 2026
BrainTwister
BrainTwister #109: Around the block
14 January 2026