Daily Chess Improvement: Checkmate in 3 Chess tactic, Puzzle Solving White to move and mate in 3. Source: http://www.wtharvey.com
Qg7 Rf6 Qg3 Kd4 Qc3#
1.Qg7+ Rf6
(1…. Kf4 2.Qg3#)
2.Qg3+ Kd4
3.Qc3#
1, Qg7+ Rf6
2. Qg3+ Kd4
3. Qc3#
1. Qg7+……Rf6
2.Qg3+…….Rd4
3. Qc3++
Yep, must take f6 away from the black king- the rook betrays him in the end.