This can be a legitimate twin if black pawn also promoted, even if initial moves same.
I have just discovered a twin for this position: (b) AN->c2, solving by 1.PPg3 h4...5.PPg7 h8Q 6.Kg6 Qh5. Both this…
Congratulations Kostas, for this very detailed and interesting award ! It is not allways the case...
Yes, of course: 15....g1=S!
Even if the problem has been broken, I am glad that we finally have such a versed solver in Canada.…
The example in the above solution is 3.Bc8xg4[+wSg5]+ – after contact check Black can place wS anywhere on the empty…
Cooked in 15.5 moves: 1. d4 e5 2. Bg5 Qxg5 3. dxe5 Qxe5 4. a4 Qc3 [c7,g7=w][b2,c2=b]+ 5. Sxc3 Ke7…
Cooked! 1.Kc2 R:b5(Bc8) 2.Sc3+ Q:c3(Sb8)+ 3.K:c3(Qd1) R:b8 4.Rb6 R:c8 5.Rb4 Ba5=
Yes, you are right, I didn't notice immediately, how much white pieces is able to move on b1...
I can understand. Even as sub-editor I am delaying things. Apologies to all. Julia definitely needs this well deserved break.