White to move. How should white proceed?
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White to move. How should white proceed?
I remember this one, but Nd6 would definitely be top of my list of moves to look at anyway, at least now:
1. Nd6
Cuts the king off from c8 and threatens a queen check from the b-file followed by mate. Black is basically forced to capture at d6 with the pawn or the queen:
1. …..cd6 (Qd6 below)
2. Rb1
Leads to mate. I think Qc6 will win as well, but black can muck things up a bit with Qf5 covering b1 for a move, and I am not seeing a quick mate any more. Continuing:
2. …..Kc8
Of course Ka8 is mate after Qxc6, and Kc7 is still going to be mate starting with Qa7. Continuing:
3. Qa7 and I don’t see a way to prevent Rb8 and Ba5#.
Back at move 1, black can put up more resistance by taking with the queen, but even without a mate, he is down a queen for a rook, and I am not really seeing an adequate defense against a mate either.
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1.Qa6 c5
2. Nd6
1. Nd6!!
Obvious mate threat, knight must be taken.
1. … cxd6
2. Qxc6! a5
3. Rb1+ Ka7
4. Qb7#
1. … Qxd6
2. bxd6
should delay the mate only slightly.
How I found this:
I started out with:
1. Qa6 Qc8
2. Qxc6! a5 etc.
Also strong, I found the importance of Qxd6 here.
Then I pondered upon:
1. Qa6 Ka8
and found
2. Nd6!
still seeming to work nicely here.
But having found Nd6, it’s simpler and more efficient to play this move right avay:-)
1) Nd6 c*d (else queen checks and mates on b7)
2) Rb1+ Kc8
3) Q*a7 and mates
I think the most precise solution, assuming Black defends well, is
1. Nd6!
If 1. Qa6?? Qxf5 and White has neither Nd6 nor Rb1+. And 1. Rb1+ allows the Black king to escape through c8 and d7.
1. … Qd7
If 1. … cxd6; 2. Qxc6! (Cutting off both the a8 and c8 escape squares for the Black king. If 2. Qa6?? Qd7 guarding the b7 square and letting the Black king go to a8) a6; 3. Rb1+ Ka7; 4. Qb7 mate.
2. Rb1+
2. Qa6?? cxd6 guarding the b7 square and letting the Black king go to a8.
2. … Ka8
3. Rb7!
3. Qa6??? cxd6 and . . . well, you get the idea.
3. … any
4. Qxa7 mate
Well, shoot. Not as precise as I’d thought. So here’s a correction.
1. Nd6 cxd6
and now
2. Qxc6 allows … Qf5 guarding the b1 square again. White may still win with 3. Ba5, but it’s messy. So instead, let’s try
2. Rb1+ Kc8
2. … Kc7; 3. Qxa7 Kd8; 4. Rb8+ Qc8; 5. Ba5 mate
2. … Ka8; 3. Qxc6 mate
3. Qc6+ Kd8
4. Rb7
with 5. Ba5+ on the way.
Does that, along with the line against 1. … Qc7 in my last comment, seal it tightly? Or did I miss something else?
Nd6 c7xd6 if black does not take Knight d6 its mate in 2
Qxc6 now forced mate in 2
1 Qa6! Qxf5 2 Ra2 Ka8 3 Rb2 and there is no defence to threat os Qb7# and Qxc6#.
may best move is Qa6, if he takes the knight we can go on Rb1c and finally Qb7 or if he choose to exchange the queen via Qc8 we can still go to Rb1c,if he moved to Ka1 we can moved Qxc6 mate