The idea is to deliver a queen check from e5 when the black king in on g7. Then both … Kg8 and … Kh8 allow Qxb8+ and Qf8++, while on … Kh6 follows Rh5+ gxh5 Qf6++. But the white rook is in the way.
So the main line goes
1. Qe7+ Kh6 2. Qh4+ Kg7 3. Qd4+ Kh6 4. Qf4+ Kg7 5. Qe5+ and we have the desired position.
1.Qe7 Kh6
2.Qh4 Kg7
3.Qd4 Kh6
4.Qf4 Kg7
5.Qe5 Kh6
6.Th5 gxh5
7.Qf6
if
5. Kg8
6.Qxb8 Kg7
7.Qf8
The idea is to deliver a queen check from e5 when the black king in on g7. Then both … Kg8 and … Kh8 allow Qxb8+ and Qf8++, while on … Kh6 follows Rh5+ gxh5 Qf6++. But the white rook is in the way.
So the main line goes
1. Qe7+ Kh6 2. Qh4+ Kg7 3. Qd4+ Kh6 4. Qf4+ Kg7 5. Qe5+ and we have the desired position.
1. Qe7+ Kg8
2. Qe6+ Kg7
3. Qe5+ Kh6
4. Rh5+ gxh5
5. Qf6#
3. … Kg8
4. Qxb8+ Kg7
5. Qf8#
1. … Kh6
2. Qh4+ Kg7
3. Qd4+ Kg8
4. Qd5+ Kg7
5. Qe5+ Kg8
6. Qxb8+ Kg7
7. Qf8#
With the queen checking on e5 it would be mate:
Kg8/h8 than Qxb8+ followed by Qf8#
Kh6 than Rh5+!!, gxh5 and Qf6# (this was the mate I saw first)
So the queen must get there in 5 moves:
1. Qf6+, Kh6 (Kg8? 2. Qe6+! 3. Qe5+) 2. Qh4+, Kg7 3. Qd4+, Kh6 (or Kg8 4. Qd5+ 5. Qe5+) 4. Qf4+!, Kg7 5. Qe5+
Nice mating sequence. Quite easy if you see the mate after Rh5+ and build the rest of the solution around it as I did. 🙂
Best wishes from Germany
Jochen
With Qe7+ you have the half point, and I think than an interesant move in Rf2, because I can’t see any useful move for White.
Thanks
nice, the queen must dance round the rook to e5 for mate
qe7 kh6
qh4 kg7
qd4 kh6
qf4 kg7
qe5 kh6
rh5 gxh
qf6#
or if the king moves to g8
qe7 kg8
qe6 kg7
qe5 kg8
qb8 kg7
qf8#
1 Qe7 and then:
A: 1…Kg8 2 Qe6 Kg7 (2…Kh8 3 Qe5 Kg8 4 Qb8 Kg7 5 Qf8#) 3 Qe5 Kg8 (3…kh6 4 Rh5 gh5 5 Qf6#) 4 Qb8 Kg7 5 Qf8#
B: 1…Kk8 2 Rf8 Rf8 3 Qf8#
C: 1…Kh6 2 Qh4 Kg7 3 Qd4 Kg8 (Kh6 4 Qf4 Kg7 5 Qe5 Kg8 6 Qb8 Kg7 7 Qf8#) 4 Qd5 Kg7 5 Qe5 Kg8 6 Qb8 Kg7 7 Qf8#
Nice problem
-Justin Daniel
Looks like it’s mate after
1. Qe7+ Kh6
2. Qh4+ Kg7
3. Qd4+ Kh6
(3 … Kg8 4. Qd5+ Kh8 5. Qe5+ Kg8 6. Qb8+ Kg7 7. Qf8#)
4. Qf4+ Kg7
5. Qe5+ Kh6 (Kg8 Qb8+ / Qf8#)
6. Rh5+ gh
7. Qf6#
all from memory so sorry for mistakes
1. Qe7+ Kh6
2. Qh4+ Kg7
3. Qd4+! Kh6
4. Qf4+ Kg7
5. Qe5+! Kh6
If 5…… Kg8
6. Qxb8+ Kg7
7. Qf8#
6. Rh5+! gxh5
7. Qf6#
There are other variations, but the main idea with most is to bring the queen to e5. Nice one Susan. Thanks.