1. Bg4!(2.Bf3#) Kd5 2.Bf3+ Kc4 3. Bd1(4. Bb3#) Kd5 4.Bb3+ Ke4 5.Be6 zz d5 6.Bf5#
Rundlauf white elephant. There was a reduction by 2 white pieces. But the bad thing is that in the first version White has only 2 minor pieces, but here there are all 4 minor white pieces. And if previously the white king defended square b4, then here he is out of work. So these positions, in the author’s opinion, are approximately equivalent. I had to rack my brains for a long time - which version of the problem should I send to the competition?!

But it was not possible to make a choice. Therefore, the 3rd option was made with a 5-fold rotation of the white bishop


;;;Grigory Popov