[Retros] No occupied white square

[Francois Labelle]

My computer found a unique proof game in 10.0 moves with 21 men all on 
white squares, and another unique proof game in 10.0 moves with 21 men 
all on black squares. A lovely pair of problems! Both are confirmed by 
Euclide.

Looks like this is computer territory. Sorry Unto!

Now I'd like to know if Unto is still going to publish his 11.0-move 
problem in a magazine, and whether I should publish my 2 problems in a 
magazine...

     François


On 12/04/2013 09:56 AM, Olli Heimo wrote:

> Hi friends- For your information. I gave the challenge to GM Unto Heinonen and today he informed me that he has a sound computer-checked proofgame in 11.0 moves leaving 19 men all on white squares. Beautiful construction but he wants to publish it Finnish "Tehtäväniekka"-magazine probably appearing in February 2014. I am not allowed to show the position yet, so this my message is only information to those who might try for better record. Olli.

> Nicolas Dupont kirjoitti 29.11.2013 kello 20:59:

>>> I think that Eric's problem  should be written like: "How many moves

>>> are required to get all men  on samecoloured squares.

>> Yes. And also the same problem but via an exact sequence...

>>

>> Best,

>>

>> Nicolas.

>>

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