| Rank | Score | Rating | Δ | Date | Event | ||
|---|---|---|---|---|---|---|---|
|
|
13
|
1 | · | · | July 28, 2018 |
 |
Problem 632. Square prime factors |
|
|
91
|
1 | · | · | July 1, 2018 |
|
Problem 630. Crossed lines |
|
|
51
|
1 | · | · | June 17, 2018 |
|
Problem 629. Scatterstone Nim |
|
|
89
|
1 | · | · | June 3, 2018 |
|
Problem 628. Open chess positions |
|
|
94
|
1 | · | · | Feb. 25, 2018 |
|
Problem 621. Expressing an integer as the sum of triangular numbers |
|
|
30
|
1 | · | · | Jan. 28, 2018 |
|
Problem 619. Square subsets |
|
|
85
|
1 | · | · | Dec. 31, 2017 |
|
Problem 617. Mirror Power Sequence |
|
|
11
|
1 | · | · | Dec. 17, 2017 |
|
Problem 616. Creative numbers |
|
|
47
|
1 | · | · | Dec. 3, 2017 |
|
Problem 615. The millionth number with at least one million prime factors |
|
|
74
|
1 | · | · | Sept. 24, 2017 |
|
Problem 610. Roman Numerals II |
| more |
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