White to move. How should white proceed?

r4rk1/6pN/6QR/2p2p2/8/p1n4P/1q1b1PP1/4RK2 w – – 0 1

Chess Daily News from Susan Polgar

Previous Article WOM 11th Internet Based FIDE Arbitersâ€™ Seminar

Next Article Create your own caption

Ng5 looks like a winner to me.

It’s threatening Qh7# if black doesn’t move the rook on f8, and if the rook is moved to somewhere like f6, white can then go 2. Re8+, Rxe8 3. Qxe8, Rf8 4. Rh8+, Qf8#.

Black can do some spite checking with Qb5+ to delay the mate, but that doesn’t lead anywhere away from a loss for black.

Qe6+

a) … Rf7

Nf6+ gxf (Kf8 obviously loses)

Rg6+ Kf8 (…Kh8 Qxf7)

Qd6+ Re7

Qxe7#

b) … Kh8

Ng5+ gxh

Qxh6+ Kg8

Qh7#

After getting lost in the wilds of 1.Nf6, I finally found the right line. I still think 1.Nf6 might be winning, but it is a nightmare to analyze, and after about 30 minutes and a 10 move deep analysis with at least 2 more to go, I gave up and decided there had to some short mate in here somewhere. Finally found it:

1. Qe6! Rf7 (Kh8 below)

2. Qe8!! Rf8 (Re8 3.Re8 Rf8 4.Rf8#)

3. Nf6! gf6

4. Qg6#

Or, at move 1:

1. Qe6 Kh8

2. Ng5!

A beautiful move, blocks the bishop’s attack on h6, and forces black to take with the pawn, which only delays regicide. Continuing:

2. ……gh6

3. Qh6 Kg8

4. Qh7#

GundayMatt,

I think black can just take the knight with the bishop on the first move, and be ok.

Gunday, black has always Bxg5…

First I looked at 1. Nf6 (almost mate except for the rook on f8) Rxf6 2. Re8+ Rxe8 (if Rf8 Qe6#) 3. Qxe8 Rf8 4. Qe6+ and we have a perpetual.

Afterwards I found the idea of playing Ng5 with a tempo because of a check: 1. Qe6+ Kh8 2.Ng5+ gxh6 3.Qxh6+ Kg8 4. Qh7#.

The only problem is that black can play 1.Rf7. In this case we can always go for the idea of checking in e8:

1. Qe6+ Rf7 2. Qe8+ Rxe8 3. Rxe8 Rf8 4. Rxf8#.

If black avoids this line with 2. Rf8 then the idea of checking with Nf6 works again:

1. Qe6+ Rf7 2. Qe8+ Rf8 3. Nf6+ gxf6 4. Qg6#

Nice problem, many variations with different ideas!

1. Ng5 Bxg5 ..

1.Nf6+ Rxf6 2.Qh7+ Kf7 3.Rxf6 Kxf6 4.Qh4+ Kf7 5.Rd7+ Kf8 6. .. same problem bishop on d2 (move 4).

remedy for the bishop theme:

1. Qe6+ Kh8 2.Ng5+ gxh6 3.Qxh6+ Kg8 4.Qh7#

fun!

1.Qe6+ Rf7 (1…Kh8 2.Ng5+ gxh6 3.Qxh6+ Kg8 4.Qh7#) 2.Qe8+ Rf8 (2…Rxe8 3.Rxe8+ Rf8 4.Rxf8#) 3.Nf6+ gxf6 4.Qg6#

1.Qe6 Rf7 (Kh8 Ng5#)

2.Nf6+ gxf6

3.Rg6+ Kh8 (Kh7 Qxf7+)

4.Qxf7 Qb5+

5.Kg1 Ne2+

6.Kh1

Now black can only sacrifice all 4 left pieces and get by Qg7 or Qh7

Qe6+.

1) If Kh8, Ng5+, gxh6, Qh7++.

2) If Rf7, Qe8+.

2.1) If Rxe8, Rxe8+, Rf8, Rxf8++.

2.2) If Rf8, Nf6+, gxf6, Qg6++.

Opss! Again:

Qe6+.

1) If Kh8, Ng5+, gxh6, Qh6+, Kg8, Qh7++.

2) If Rf7, Qe8+.

2.1) If Rxe8, Rxe8+, Rf8, Rxf8++.

2.2) If Rf8, Nf6+, gxf6, Qg6++.

This is fairly simple and straightforward. White checkmates black starting with 1. Qe6+! Black has two responses, but both lead to forced mates in 4 moves.

1… Kh8

2. Ng5+ gxh6

3. Qxh6+ Kg8

4. Qh7#

1… Rf7

2. Qe8+ Rxe8

3. Rxe8+ Rf8

4. Rxf8#

1. Qe6+ (a) Kh8

2. Ng5+ gxh6

3. Qxh6+ Kg8

4. Qh7#

1. … (b) Rf7

2. Qe8+ Rxe8

3. Rxe8+ Rf8

4. Rxf8#

Mark

1.Qe6 Rf7 2.Qe8 line doesn’t work because of Rf8 and queen must go back on Qe6.

1.Qe6 Rf7 2.Nf6