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# Beat caveatcanis

• #1

In the following position (from my most recent OTB tournament) I have just blundered by moving my bishop from e6 to f7. (I should have put the bishop on d7.)

So: White to play and win!

• #2

And why can't black play 4. ... Rd8?

• #3
GSHAPIROY wrote:

And why can't black play 4. ... Rd8?

4. ... Rd8 is answered by 5. Qe5+ Kg8 6. Qg7#

• #4
caveatcanis wrote:
GSHAPIROY wrote:

And why can't black play 4. ... Rd8?

4. ... Rd8 is answered by 5. Qe5+ Kg8 6. Qg7#

That's true, but I'm not sure that 5. Rxa8 actually wins

• #5
GSHAPIROY wrote:
caveatcanis wrote:
GSHAPIROY wrote:

And why can't black play 4. ... Rd8?

4. ... Rd8 is answered by 5. Qe5+ Kg8 6. Qg7#

That's true, but I'm not sure that 5. Rxa8 actually wins

Lets play a forum game from that position. You play black.

• #6
Scottrf wrote:
GSHAPIROY wrote:
caveatcanis wrote:
GSHAPIROY wrote:

And why can't black play 4. ... Rd8?

4. ... Rd8 is answered by 5. Qe5+ Kg8 6. Qg7#

That's true, but I'm not sure that 5. Rxa8 actually wins

Lets play a forum game from that position. You play black.

Okay, you and caveatcanis play black.

My move is 5. ... Kf7

• #7
theemathas wrote:
GSHAPIROY wrote:
caveatcanis wrote:
GSHAPIROY wrote:

And why can't black play 4. ... Rd8?

4. ... Rd8 is answered by 5. Qe5+ Kg8 6. Qg7#

That's true, but I'm not sure that 5. Rxa8 actually wins

Count the pieces... White has a rook up

I realise that, and we're trying to prove whether white wins or not with that.

• #8
GSHAPIROY wrote:

Okay, you and caveatcanis play black.

My move is 5. ... Kf7

• #9

5. Rxa8+ actually forces mate in 10.

I checked the position with my computer before posting, but decided that expecting people to find the mate would make the problem too hard.

• #10
caveatcanis wrote:

5. Rxa8+ actually forces mate in 10.

I checked the position with my computer before posting, but decided that expecting people to find the mate would make the problem too hard.

How?

• #11
GSHAPIROY wrote:
caveatcanis wrote:

5. Rxa8+ actually forces mate in 10.

I checked the position with my computer before posting, but decided that expecting people to find the mate would make the problem too hard.

How?

One line is:

5.Rxa8+ Kf7 6.Qe8+ Kf6 7.Qh8+ Kf5 8.Qc8+ Ke4 9.Qxg4+ Ke5 10.Qe2+ Kf6 11.Re8 Be7 12.Qxe7+ Kf5 13.Qg5#

but there are many side-variations.

• #12
Scottrf wrote:
GSHAPIROY wrote:

Okay, you and caveatcanis play black.

My move is 5. ... Kf7

And I play 7. ... Qf6

• #13

Presumably you meant Qe6?

Ra6 looks pretty clean but even Qxc5 is safe because it covers g1, stopping back rank mates. Even Qxe6 is enough.

• #14

Really great problem !! And I liked that you took it from one of your own games !!

• #15

Seems legit. Did you use a computer to check every move? Because the position is really quite complex and tends to result in unexpected "better" winning moves.

• #16
meeeep wrote:

Seems legit. Did you use a computer to check every move? Because the position is really quite complex and tends to result in unexpected "better" winning moves.

Yes - I computer-check positions before I post them, because I don't want to waste anyone's time.

On the other hand, my comments on other people's positions are rarely checked, which is why they're often wrong.

• #17

Ah ok thanks for the effort. Quite an interesting position to analyse, and absolutely horrible to verify by hand :).

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