[Event "?"]
[Site "?"]
[Date "?"]
[Round "?"]
[White "Flankaanval"]
[Black "How to move"]
[Result "*"]
[GameType "20"]
[Setup "1"]
[FEN "W:W24,27,28,29,32,33,37,38,39,40:B8,11,13,14,15,16,18,20,25,26."]
[PlyCount "21"]

1. 28-23 { 28-23 defend white 24 from black attack of 14-19 and
19x30. } 8-12 2. 40-34 { Black can not attck white 24 with 14-19 /
19x30. So white 40 can move to 34. } 11-17 3. 33-28 { White can move
23-19x8 and 27-21x23. So black must exchange with 14-19. } 14-19
4. 23x14 20x9 5. 28-22 { To get 23 is the point. But it is necessary
to get rid of black 17 in order to prevent from black 17-22. So the
move must be 28-22x23. } 17x28 6. 32x23 9-14 7. 23-19 { It is ok to
move 38 or 39. Black has no good move. } 14x23 8. 27-22 18x27 9. 29x9
27-31 10. 39-33 31x42 11. 38x47 *