Number | Name | Date | Kind |
---|---|---|---|
1472657 | Lillard | Oct 1923 | A |
2196861 | Gruber | Apr 1940 | A |
2665913 | Hlavac | Jan 1954 | A |
3751039 | Dykoski | Aug 1973 | A |
4326720 | Erlich | Apr 1982 | A |
4984808 | Young | Jan 1991 | A |
5314189 | Kerivan | May 1994 | A |
6142474 | Tachkov et al. | Nov 2000 | A |
Entry |
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Fred Reinfeld, Book Excerp, How To Win At Checkers, pp. 178-184 (1957). |