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Recent Problems

IDDescription / TitleSolved By
671Colouring a Loop
46
670Colouring a Strip
97
669The King's Banquet
134
668Square root smooth Numbers
305
667Moving Pentagon
77
666Polymorphic Bacteria
142
665Proportionate Nim
139
664An infinite game
115
663Sums of subarrays
181
662Fibonacci paths
334