Test Position 2

[Karol Majewski]

OK, this is very intresting, but what about the line 1.Qxe5 fxe5 2.Rf1 Qe7 and now if 3.Bd1 then b5 4.Bb3 Rc4 and black has space to repeat Qd8-e8-d8-e8.

[JVMerlino]

Yep, that MIGHT hold. Not sure, but here's the continuation I see:

1.Qxe5 fxe5 2.Rf1 Qe7 3.Bd1 b5 4.Bb3 Rc4 5.Kg2 {avoiding check on c5} a6 6.Bxc4 bxc4 7.b3 cxb3 8.axb3 Qe8 9.c4 Qe7

[D]6kr/4q2p/p3P1pB/4p3/2P1P3/1P6/6KP/5R2 w - - 0 10

and now The King sees nothing better than a draw.

jm

[Ignacio]

Hi John,

10.b4 wins.

Best,
Ignacio.

[JVMerlino]

I looked at that, but I guess I just needed a bit more CPU time.

It turns out that after 10.b4 Qxb4 11.Rf7 a5, you need to find the following:

12.Rd7!! {this move alone may be hard for engines to find} Qb2+

...and now any move by the White King onto the third rank wins.

Great position!

jm

[Karol Majewski]

Yep, that MIGHT hold. Not sure, but here's the continuation I see:

1.Qxe5 fxe5 2.Rf1 Qe7 3.Bd1 b5 4.Bb3 Rc4 5.Kg2 {avoiding check on c5} a6 6.Bxc4 bxc4 7.b3 cxb3 8.axb3 Qe8 9.c4 Qe7

I will play 8...a5! and after 9.c4 Qa3!

draw!

[Marc MP]

Yep, that MIGHT hold. Not sure, but here's the continuation I see:

1.Qxe5 fxe5 2.Rf1 Qe7 3.Bd1 b5 4.Bb3 Rc4 5.Kg2 {avoiding check on c5} a6 6.Bxc4 bxc4 7.b3 cxb3 8.axb3 Qe8 9.c4 Qe7

I will play 8...a5! and after 9.c4 Qa3!

draw!

Hi Karol,

I think you're right, and 8...a5! will draw! This more or less refutes the solution I had:

1. Qxe5 fxe5 2. Rf1 Rc8 3. Bd1 Rc4 4. Bb3 b5 5. Bxc4 bxc4 6. b4 * which is similar.

So I searched for an improvement and I think I found one!

1. Qxe5 fxe5 2. Rf1 Rc8 3. Bd1 Rc4 4. Bb3 b5 5. a4! a6 {seems forced} 6. Ba2!! Qe7 {lets try this} 7. b4! *

[D]6kr/4q2p/p3P1pB/1p2p3/PPr1P3/2P5/B6P/5RK1 b - b3 0 1

Now white will capture the c4-rook with a winning Q-side pawn structure! Pushing the b-pawn will give an easy win!

Here is Toga 1.3 X4 analysis from the diagram (score relative to Toga - black here):

Code: Select all

00:22:12.5	0,00	18	627003769	Qd8 Rf7 Qe8 Bxc4 bxc4 Rg7+ Kf8 Rc7+ Kg8 Rg7+ 
00:24:38.4	-5,58	19	706926332	Qd8 Bxc4 bxc4 b5 axb5 axb5 Qb8 e7 Qa7+ b6 Qxe7 b7 Qd8 Rf8+ Qxf8...
00:29:39.8	-2,95	19	868872523	Qa7+ Kg2 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Rf7+ Kh6 Rd7 Re8 e7 Kg7 b5 ...
00:35:20.8	-3,05	20	1046837979	Qa7+ Kg2 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Rf7+ Kh6 Rc7 Kg5 e7 Kf6 b5 ...
00:42:52.4	-2,85	21	1296150453	Qa7+ Kg2 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Rf7+ Kh6 Rc7 Kg5 e7 Kf6 b5 axb5 axb5 Ke6 b6 Kd6 Ra7 Rb8 Kf3 h6 Ke3 g5 Kf3 h5 Ke3 

And CM9_R1 (score relative to white):

Code: Select all

1:15	3/14	6.79	21533083	1...De8 2.Fxc4 bxc4 3.b5 axb5 4.axb5 Dd8 5.Rg2 Da8 6.Rg3 Da3...
3:19	3/14	2.37	54352033	1...Dd8 2.Fxc4 bxc4 3.Rg2 g5 4.b5 axb5 5.axb5 Da8 6.Rg3 Dc8 7.Tf5 ...
8:29	4/15	3.53	137867222	1...Dd8 2.Fxc4 bxc4 3.Rg2 g5 4.b5 axb5 5.axb5 Da8 6.Rg3 Dc8 7.Tf5...
22:22	4/15	3.10	351917628	1...Da7+ 2.Rg2 Dg7 3.Fxg7 Rxg7 4.Fxc4 bxc4 5.Tf7+ Rh6 6.e7 Te8...
29:23	4/15	2.83	455845961	1...Dg7 2.Fxg7 Rxg7 3.Fxc4 bxc4 4.Tf7+ Rh6 5.Rg2 Te8 6.e7 g5 7.Tf6+ Rg7 8.Txa6 Txe7 9.a5 Rf7 10.b5 Re8 11.Ta8+ Rd7

I don't think black can prevent this winning set-up for white. Any comments?

[Terry McCracken]

Yep, that MIGHT hold. Not sure, but here's the continuation I see:

1.Qxe5 fxe5 2.Rf1 Qe7 3.Bd1 b5 4.Bb3 Rc4 5.Kg2 {avoiding check on c5} a6 6.Bxc4 bxc4 7.b3 cxb3 8.axb3 Qe8 9.c4 Qe7

I will play 8...a5! and after 9.c4 Qa3!

draw!

Hi Karol,

I think you're right, and 8...a5! will draw! This more or less refutes the solution I had:

1. Qxe5 fxe5 2. Rf1 Rc8 3. Bd1 Rc4 4. Bb3 b5 5. Bxc4 bxc4 6. b4 * which is similar.

So I searched for an improvement and I think I found one!

1. Qxe5 fxe5 2. Rf1 Rc8 3. Bd1 Rc4 4. Bb3 b5 5. a4! a6 {seems forced} 6. Ba2!! Qe7 {lets try this} 7. b4! *

[D]6kr/4q2p/p3P1pB/1p2p3/PPr1P3/2P5/B6P/5RK1 b - b3 0 1

Now white will capture the c4-rook with a winning Q-side pawn structure! Pushing the b-pawn will give an easy win!

Here is Toga 1.3 X4 analysis from the diagram (score relative to Toga - black here):

Code: Select all

00:22:12.5	0,00	18	627003769	Qd8 Rf7 Qe8 Bxc4 bxc4 Rg7+ Kf8 Rc7+ Kg8 Rg7+ 
00:24:38.4	-5,58	19	706926332	Qd8 Bxc4 bxc4 b5 axb5 axb5 Qb8 e7 Qa7+ b6 Qxe7 b7 Qd8 Rf8+ Qxf8...
00:29:39.8	-2,95	19	868872523	Qa7+ Kg2 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Rf7+ Kh6 Rd7 Re8 e7 Kg7 b5 ...
00:35:20.8	-3,05	20	1046837979	Qa7+ Kg2 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Rf7+ Kh6 Rc7 Kg5 e7 Kf6 b5 ...
00:42:52.4	-2,85	21	1296150453	Qa7+ Kg2 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Rf7+ Kh6 Rc7 Kg5 e7 Kf6 b5 axb5 axb5 Ke6 b6 Kd6 Ra7 Rb8 Kf3 h6 Ke3 g5 Kf3 h5 Ke3 

And CM9_R1 (score relative to white):

Code: Select all

1:15	3/14	6.79	21533083	1...De8 2.Fxc4 bxc4 3.b5 axb5 4.axb5 Dd8 5.Rg2 Da8 6.Rg3 Da3...
3:19	3/14	2.37	54352033	1...Dd8 2.Fxc4 bxc4 3.Rg2 g5 4.b5 axb5 5.axb5 Da8 6.Rg3 Dc8 7.Tf5 ...
8:29	4/15	3.53	137867222	1...Dd8 2.Fxc4 bxc4 3.Rg2 g5 4.b5 axb5 5.axb5 Da8 6.Rg3 Dc8 7.Tf5...
22:22	4/15	3.10	351917628	1...Da7+ 2.Rg2 Dg7 3.Fxg7 Rxg7 4.Fxc4 bxc4 5.Tf7+ Rh6 6.e7 Te8...
29:23	4/15	2.83	455845961	1...Dg7 2.Fxg7 Rxg7 3.Fxc4 bxc4 4.Tf7+ Rh6 5.Rg2 Te8 6.e7 g5 7.Tf6+ Rg7 8.Txa6 Txe7 9.a5 Rf7 10.b5 Re8 11.Ta8+ Rd7

I don't think black can prevent this winning set-up for white. Any comments?

Could you post the entire game?

I'd like it for my records thanks!

Terry

[Marc MP]

Could you post the entire game?

I'd like it for my records thanks!

Terry[/quote]

Unfortunately I don't have it. It is not on chessgames.com either.

[Terry McCracken]

Could you post the entire game?

I'd like it for my records thanks!

Terry

Unfortunately I don't have it. It is not on chessgames.com either.

Thanks anyway.

I'll try some other databases on the net.

I like chessgames,com as well, but quite often they don't have the game you're looking for.

Thanks Again, and thanks very much for this position, I truly enjoyed it!

Best,
Terry

P.S. If I find the game I'll post it.

[Rubinus]

None engine not find! Depth cca 31 needded. Depth 23 - 1.Qxe5 fe5 2.Vaf1 Qxe6! - extend search.