Lipton, Michael
The Problemist Supplement, 2012
#2
10 + 3
5454 | Near Snap | 2019 |
Anticipated by 1977(1866), 141379(1874), 75330(1879), 178325(1903), 189978(1913), 195113(1918), 195293(1923), 62067(1936), 16381(1940), 139878(1949), 147818(1983)
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