[Retros] N2Ai: 7Qs+2Rs

[Alain BROBECKER]

Dear retro friends,



The computer at last found a 7Q+2R position

for N2Ai. There won't be much of them i think.

I don't know if it's more interesting than

previous 8Qs+1R position
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N2Ai) Alain Brobecker & Computer

Original, 2011/04/14

Q7/7Q/3Q1Q2/1Q6/6Q1/4Q3/R7/2R5

http://www.janko.at/Retros/d.php?ff=Q7/7Q/3Q1Q2/1Q6/6Q1/4Q3/R7/2R5
9+0: Add 2 units.



Best regards, Alain





Solution below:



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BK on b8 with last move b7x?a8=Q is not possible

since b8 would have been controlled by Qd6 without

possibility of shielding with WK.

Squares controlled twice are b3, e1 and f7, all other

squares are controlled three times or more.

Of those only b3 allows enough room for WK to parry the

second check, so +BKb3 +WKd3.

Q7/7Q/3Q1Q2/1Q6/6Q1/1k1KQ3/R7/2R5