Tricky triangles · 26 October 2021

Your evil DCDA twin (08/10/21 Riddler Classic) · 11 October 2021 · Problems Maths

Productive polygons (17/09/21 Riddler Classic) · 20 September 2021 · Problems Maths

Robot Tug-of-War · 1 September 2021 · Problems Maths

Radiodrome prodrome (27/08/21 Riddler Classic) · 30 August 2021 · Problems Maths

Adhesive dice-ulitis (13/08/21 Classic) · 17 August 2021 · Maths Problems

Laplace's Rule of Succession · 14 August 2021 · Maths

Haemophilia Liberation? · 13 August 2021 · Medicine

Complex chain (30/07/21 Classic) · 31 July 2021 · Problems Maths

Riddler Solitaire (25/06/21 Classic) · 29 June 2021 · Problems Maths