0:00
Combinatorics 6.0/10

Two Tokens on a Chessboard

Two identical tokens are placed on two different squares of an 8 × 8 board. Two placements are considered the same if one can be carried to the other by a symmetry of the square board (any of its 4 rotations or 4 reflections). How many different placements are there? Give an integer.

Related problems & prerequisites

Worth solving first

Source: Standard application of Burnside's lemma; no traceable original source. Statement written for AxiomIQ.