On the diagonal it can be done more economical, but the white switchback is missing. W: Ke8 Sf5 Pb2 Pg5…
Although it may be possible to achieve more than 5 Queen Schnoebelens in a Masand proof game, having spent several…
But if the very last promotion is a Rook, then we have a unique sequence: 10.Kxg1 Bg4 11.fxg8=Q [g4=w][a2=b]+ Kxg8…
This last version quickly demolished when I verified the last 5 moves: 10.Kxg1 dxc2 11.Sd2 Bg4 12.Sb1 cxb1=S 13.Rxb1 Bxd1…
Looks like multicolored fireworks. What about two more Q promotions? 12.Be2 dxe2 13.Sc3 exd1=Q [a1,c2=b][d6,h5=w]+ 14.Sxd1 cxd1=Q [a1=w][d6,h5=b]+ 15.Rxd1. The…
By the way, I liked a lot the problem of Kostas.
The idea is already realized with 1336. But it is not justified an added condition (Rockagogo) for a single last…
Nice and neat. Would the author manage another white switchback instead of c2-c4-c5, it could be even better.
PWC condition cleverly used to get continuous Berolina effects. Hand of a master!
2 neat under promotions of a neutral pawn moving on to help with helpmate under koeke condition... decent unity too...…