Themes in checkers

The first link should show the theme clearly, the other links show the same idea.

16. McCulloch-Miller Draw	17. The Back Shot White to win. Example 2 Example 3	18. Circling the Square White to win. Example 2 Example 3
19. Lyons' Position White to draw. Example 2	20. Wilder's Position White to win. Example 2 Example 3	21. Perpetual Check Red to draw. Example 2 Example 3
22. Elbowing White to draw. Example 2 Example 3 Relative Position Sister Problem	23. The Pitch White to win. Example 2 Example 3 Strolling Through The Park	24. A Loaned Sacrifice Red to draw. Example 2 Example 3
25. Indian Gift Red to win. Example 2 Example 3	26. Familiar Theme 26	27. Familiar Theme 27

page 2 of 3 more themes: page 1 | page 3