It’s checkmate if the black queen relinquishes her guard over g8. Chase her relentlessly beginning with Qh5. Black will be forced to choose between giving up a bunch of material or being checkmated.
1.Qh5 Rxg2(forced since 1….QxQ 2.Rg8#; 1…Qf8 2.Qg6 and black can’t stop mate in both g8 and h7) 2.QxQ RxR+ 3.KxR Rc7 (not 3…Bg7 4.Qe8 Bf8 5.QxR and white wins easily) 4.Qe8+ Bf8 5.QxN(b5) and white wins the black’s a4 pawn and soon the a4 pawn with a winning position.
Notice that black has nothing after5… Rc1+ 6.kg2 and black has no more checks .Black can’t also take white a3 pawn since Qb8+ wins black rook.Also black can’t really protect his a4 pawn with 5….Rc4 6.Qxd5 wins another pawn with no compensation.
BTW Anon 2:07:00 1….Ng5 2.Rxg5 and the mate on g8 is still in effect.
It’s checkmate if the black queen relinquishes her guard over g8. Chase her relentlessly beginning with Qh5. Black will be forced to choose between giving up a bunch of material or being checkmated.
I guess Qh5 tightens the screw on black.
but black have Ng5.
I think this line is forced;
1.Qh5 Rxg2(forced since 1….QxQ 2.Rg8#; 1…Qf8 2.Qg6 and black can’t stop mate in both g8 and h7)
2.QxQ RxR+
3.KxR Rc7 (not 3…Bg7 4.Qe8 Bf8 5.QxR and white wins easily)
4.Qe8+ Bf8
5.QxN(b5) and white wins the black’s a4 pawn and soon the a4 pawn with a winning position.
Notice that black has nothing after5… Rc1+ 6.kg2 and black has no more checks .Black can’t also take white a3 pawn since Qb8+ wins black rook.Also black can’t really protect his a4 pawn with 5….Rc4 6.Qxd5 wins another pawn with no compensation.
BTW Anon 2:07:00 1….Ng5 2.Rxg5 and the mate on g8 is still in effect.
–Henryk.
Qd1xRc2, and from there I’m letting my Rooks do the talking.