[Retros] recent improvements

[Richard Stanley]

Hi Andrew,


> (3) Improved version of fN

> rnb1kbnr/ppp1pppp/8/5q2/3P4/4K1P1/PPPQP2P/RNB2nNR

> PG in 7.0


It seems to me that this has no solution. (Popeye agrees.) Did you
give the wrong position?

Best regards,
Richard