Chris et al
Okay, Chris has made progress here.
The game continuation was indeed.
25. Rd5 Bxf4
26. Rc5? Qe7!
This is a critical point so I'll reinforce where the pieces are:
White: King h1, Queen a6, Rooks b1 and c5, Pawns on a4, b2, c3, g2 and h2.
Black: King g8, Queen e7, Rook e8, Bishop f4, Knight c6, Pawns a5, f7, g7 and
h7.
Chris is quite right in saying that OTB White would find this very difficult.
Indeed Deep Rybka says that after 26...Qe7 Black is better to the tune of +1.92
compared to the near equality of two moves ago.
Chris is also correct in pointing out that the best move for White is 27 Rh5 -
to prevent 27...Qh4 - and originally I thought Black could gain a useful tempo
and relieve his back rank with 27...g6. However, after 28 Rh3 it transpires
that the Rook is better here than on h5. Black, after 27 Rh5, should play
27...Qe4 - guarding the Knight and hitting the b1 Rook with tempo - 28 Rf1 Ne5
29 Qb5 Rd8 30 Qb6 - all as per Chris's analysis - 30... Qd3! - this is the
difference. The White Rook is still on h5 rather than on h3 where it would have
prevented this move - 31 Qf2 and now Deep Rybka's suggestion of 31...g5! leaves
Black dominating. Still lots of interesting play but Black is entrenched in the
centre while White has been pushed to the edges. Deep Rybka still evaluates
this as +2 to Black.
Now the above line in itself would be enough to vindicate my choice of 26...Qe7
and my judgement that Black was better. In other words White's idea of
answering 25...Bxf4 with 25 Rc5 pinning has been countered by my idea of
26...Qe7 unpinning with apparent tempo. However, there are two things left to
discuss. One is White's actual reply to 26...Qe7, and the other is the main
line of my analysis.
After 26...Qe7 Simms floundered completely. There is a shock value to the text
which was apparent even in CC. He actually played 27 Rf1? which left the c5
Rook en prise. His point was 27...Qxc5 28 Rxf4 Re1+ 29 Rf1 and after the swap
of Rooks White may have reason for playing on a piece down. Black is not
obliged to play 28...Re1+ and Deep Rybka suggests 28...Qe3 judging Black to be
+2.9. However, the computer agrees with my actual move which was 27...Qh4! At
this point, punchdrunk, Simms resigned.Ironically White can play 28 Rh5 Qxh5 29
Rxf4 and only be -3.38 worse. Bad enough.
So, is that it? Actually, no. The big shocks are actually yet to come. Back to
the position after 26...Qe7. which is:
White: King h1, Queen a6, Rooks b1 andc5, Pawns on a4, b2, c3, g2 and h2.
Black: King g8, Queene7, Rook e8, Bishopf4, Knight c6, Pawns a5, f7, g7 and h7.
Just to reiterate 27 Qxc6 loses immediately to 27...Qe1+ 28 Rxe1 Rxe1 mate.
We now move to part three of this discussion. Exactly what is the refutation of
27 Rxc6? Remember 27...Qe1+ is met by the interposition 28 Qf1.
The main line is a veritable cascade of ideas. Over to you.
Happy analysing!
Tyson
On 06 June 2018 at 10:40 Chris Ross <c.ross@xxxxxxxxxxxxxxxxxxx> wrote:
Tyson et al,
The more I look at this, the more unconvinced I’m becoming for black. I
see the tricks that he’s got, but I feel that white has more than enough to
thwart them. Once white has sorted out his untangled pieces, I think his
queen-side pawns will give him an edge.
In a correspondence game, this should mean that white has the time to
sort things out. Over-the-board, this would be incredibly difficult for white
to hold, especially so with all the forces of black swarming around his king.
So, the main line is obviously:
25. Rd5 Bxf4
26. Rc5 Qe7
With threats of back-rank on e1 and Qh4, which means the knight is immune.
White has to stop Qh4, which will allow the black queen to penetrate.
27. Rh5 seems to be the only move then.
27... Qe4 defending the knight and hitting the rook on b1 seems logical,
as the queen wants to step in front of the knight when it lands on e5 to
avoid any pins.
28. Rf1 Ne5
And black can try and get in Ng4 or Nd3, with threats on f2 and h2.
Somehow though, I just think that white should have enough to harass the
black back-rank and the rook on e8 and wherever it runs and then bring the
queen back, say to f2 or f3 and things should hold, with the h5-rook maybe
coming back to h3.
I know it is challenging, and the black minor pieces are annoying, but if
white can coordinate, he should be better.
29. Qb5 Rd8
30. Qb6 Rf8
31. Qf2 and white’s fine.
Cheers,
Chris
From: usbca_chess-bounce@xxxxxxxxxxxxx
[mailto:usbca_chess-bounce@xxxxxxxxxxxxx] On Behalf Of mordue andrew ;
(Redacted sender "tyson.mordue" for DMARC)
Sent: 06 June 2018 09:11
To: usbca_chess@xxxxxxxxxxxxx; Stephen Thacker <stephenthacker3@xxxxxxxxx>
Subject: [usbca_chess] Re: One idea further - Part two
Hello Steve et al,
After 26 Rc5 Qe7 27 Qxc6 loses to 27...Qe1+ 28 Rxe1 Rxe1 mate. However,
26 Rc5 Qe7 and now 27 Rxc6 leaves the White Queen on a6 so after 27...Qe1+
she can retreat with 28 Qf1 to meet the check. Note how the White Queen and
b1 Rook mutually protect each other,
On the right path but took the wrong fork.
Tyson
> >
On 06 June 2018 at 05:32 Stephen Thacker <stephenthacker3@xxxxxxxxx
mailto:stephenthacker3@xxxxxxxxx ;> wrote:
Hi, the way I see things is thus: after Rd5 why not take the f pawn
in view of Rc5 Qe7 or even Qe7 after Rd5?
Not sure white does as he has to avoid mate. Am I getting anywhere?
Cheers, Steve
From: mordue andrew (Redacted sender "tyson.mordue" for DMARC)
Sent: Monday, June 4, 2018 8:11 PM
To: usbca_chess
Subject: [usbca_chess] One idea further - Part two
Hello all.
You've all had the chance over the weekend to analyse the position
in Simms-Mordue after 24 ... Bd6.
Just a reminder that the position at that point was:
White: King h1, Queen a6, Rooks b1 and d1, Pawns on a4, b2, c3, f4,
g2 and h2.
Black: King g8, Queen c7, Rook e8, Bishop d6, Knight c6, Pawns a5,
f7, g7 and h7.
Instead of defending the f4 Pawn immediately with 25 g3, or
postponing the decision with 25 Re1 challenging the e-file, Simms chose to
play 25 Rd5. The idea was to deter 25...Bxf4 because of the pin 26 Rc5.
However, these moves did happen!
The point was that I had seen one idea further than my opponent.
Not simply one move because some calculation is needed. Indeed when I
started to analyse in detail I realised that several ideas were coming to
fruition, for both Black and White!
Your task, should you choose to entertain yourself, is to find what
I consider to be the main line of play afrer 26 Rc5. There are lots of
variations, some of which are of more value than others, one of which - my
main line - has several startling features.
I'd like to remind you that this was a correspondence game so I had
plenty of time to analyse variations. My opponent failed to utilise his
time and lost both quickly and abysmally. I will post again next week so
take your time.
Regards,
Tyson
>
