Uuganbaatar Ninjbat. Another Memorable Mongolian Olympiad Problem: A Two-Colored Rectangular Lattice. The American Mathematical Monthly, 123(9):894-899, 2016. [doi]
@article{Ninjbat16,
title = {Another Memorable Mongolian Olympiad Problem: A Two-Colored Rectangular Lattice},
author = {Uuganbaatar Ninjbat},
year = {2016},
url = {https://www.tandfonline.com/doi/abs/10.4169/amer.math.monthly.123.9.894},
researchr = {https://researchr.org/publication/Ninjbat16},
cites = {0},
citedby = {0},
journal = {The American Mathematical Monthly},
volume = {123},
number = {9},
pages = {894-899},
}