This has all the elements of a good problem. Interesting play (switchbacks, bristol & selfpin) with a quiet end and…
http://pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P1320719%27
hier die in typis notierten Aufgaben im Diagramm: http://pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P1320718%27 http://pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P130719%27 http://pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P1320721%27 http://pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P1320722%27 http://pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P1320729%27 http://pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P1320734%27 http://pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P1320740%27
Wow! A complete set.... Please publish!
Surely this is a different scheme and not an economic setting of Aleksey's idea. But, definitely a nice problem !
Dear chess friends! Yes, apparently your 9-pieces-versions are the most ecomonic in this case! Excellent! But they has another scheme…
I don't know whether Georgy meant one of the following versions with 9 pieces or a different one: Version 1:…
Nice ! Difficult to be shorter !
Very nice! Surprising that it was not discovered earlier!
I am sorry. You are right of course. Black king has too many flight squares but for Annan condition.