White to move... If You find it mate will be in 5 
nice day,
Sekos

8/p3R3/3p1pkp/2pP2p1/2P3Q1/7P/Prq2PPK/8 w - - 0 1
nice day,
Sekos
Mate is 6 is trivial. If there's a mate in 5 I don't see it and neither do any of the engines I checked:
1. Qe6 h5 2. Qf7+ Kf5 3. Re6 Kf4 4. g3+ Kf3 5. Qxf6+ Qf5 6. Qxf5#
1. Qe6 h5 2. Qf7+ Kf5 3. Re6 Kf4 4. g3+ Kf3 5. Qxf6+ Qf5 6. Qxf5#
O yes After move Qe6 mate in 5 ( no matter what black can do) , that's correct!
nice day,
Sekos
nice day,
Sekos
No, that's a mate in 6.
No, after the first move it's reduced to a mate in 5.
Fulcrum2000 
Well YES .. Indeed..
After You finding the Queen move,,, mate will be in 5
nice day,
sekos

Well YES .. Indeed..
After You finding the Queen move,,, mate will be in 5
nice day,
sekos
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