GameKnot: Comments - Chess Tactics #103253

CHESS TACTICS #103253

Problem's rating:	1265
Avg. time to solve:	00:48
Total attempts:	125
Solved percentage:	84.0%

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bone32
24-Mar-12, 12:12

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Can anyone help me on this???

What's wrong with:

1. Rd8+ Ne8
2. Qf5 Qa1+
3. Ne1 Qxe1#

or even

1. Rd8+ Ne8
2. Rd1 Rxf7

Why would white rook move:

Rh8+

???

jokeslayer
24-Mar-12, 16:47

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The White rook has to move so the White queen can be saved. 2. Rh8+ is the only move that doesn't get the White queen taken and buys enough time to defend against the back rank mate.

After 1. Rd8+ Ne8, White plays 2. Rxe8+ and Black can't play Rxe8 without losing his queen, and if he plays Kh7 now, he's just losing the knight for no reason.

bone32
25-Mar-12, 02:58

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after kh7

Qf5+ Ng6
Ng5+ hxg5
Qh3+ Nh4

can't open up the pawns for king to escape and if rook takes rook

Qa1#

jokeslayer
25-Mar-12, 04:31

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I don't understand, what move numbers are those? I'm guessing (from the original position)
1. Rd8+ Ne8 2. Rxe8+ Kh7 3. Qf5+, when I think g6 is better than Ng6

bone32
25-Mar-12, 06:56

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sorry was being a bit assumtive...

From the starting point...

option 1:
Rd8+ Ne8
Rxe8+ Kh7
Rxe7 Qa1+
Ne1 Qxe1#

option 2:
Rd8+ Ne8
Rxe8+ Kh7
Qf5+ ...
(white has to come this far to avoid being taken)
Ng6
Ng5+ hxg5
Qh3+ Nh4
after this there is no clear shot at check...
and all the three defending pawns are stuck...

Rxe7 Qa1#

best alternative here I think is

g3
allowing the queen to defend but then black has
Rxe8

g6 as opposed to Ng6. Agreed..
... g6
Qf8 Qa1+
Ne1 Qxe1#

Either way, I don't agree with the the Tactical answer. And it lost me 18 points... Hey ho

jokeslayer
25-Mar-12, 07:31

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Under option 1, I would say White shouldn't play Rxe7, but should use Rh8+ to force Kxh8 and then play Qf8+ to get the queen out of the rook's line of fire, then play h3 to break the back rank mate.

Under option 2, after Qf5+ Black is better off playing g6 rather than Ng6, because now Ng5+ hxg5 and the White queen can't escape because White needs to play h3 to escape the back rank mate.

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CHESS TACTICS #103253