[Retros] Add pieces
hwatheod at cs.stanford.edu
Sat Mar 12 01:10:06 EST 2011
On Fri, 11 Mar 2011, Theodore Hwa wrote:
> On Tue, 8 Mar 2011, Otto Janko wrote:
>> Alain BROBECKER wrote:
>>> The number of pieces is not given ("complete the position"
>>> or "add the pieces", maybe no piece to add (joke?))
>> Maybe better: "Add the _minimum_ number of pieces". I think it would be
>> difficult to compose a problem in which it is not possible to add an
>> additional piece (although not impossible).
> Here's one possibility with 30 units, nobody in check: Starting from the
> initial position, remove the queens, and move the kings over to the queens'
> original squares. It is not possible to add any pieces.
26 units: From the initial positions, remove queens and bishops. Move
kings onto c1/c8, and knights or rooks onto f1/f8.
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