[Retros] More than three, less than five

[Joost de Heer]

> [very fast analysis]

> 1.OO! Retraction requires the black king to go to c1, then the bishop

> goes to c8 and b7-b6 can be retracted. The whole retraction requires

> more than 100 halfmoves.


A small correction. Since castling is added as a '50-move resetter' in 
compositions, the correct solution should probably be 'White indicates 
that his next move will be castling, and claims a draw on grounds of the 
50-move rule'. The actual castling will reset the counter, so after 
1.OO, white can't claim a draw.

Joost