From: Larry Kaufman <lkaufman <at> COMCAST <dot> NET>
Date: 8 oct 2002
Subject: Re: 2 piece joseki problem..

----- Original Message -----
From: "Sylvain Ferrieres" <ferriere <at> CLIPPER <dot> ENS <dot> FR>
To: <SHOGI-L <at> TECHUNIX <dot> TECHNION <dot> AC <dot> IL>
Sent: Tuesday, October 08, 2002 9:49 AM
Subject: 2 piece joseki problem..


>
> Hello everybody,
>
> I'm a kyu player and I try to learn the 2 piece handicap joseki, clearly
> explained by L. Kaufmann (thank you !), on Eric Cheymol's page:
> http://echeymol.free.fr
>
> I have questions on the third variation :
>
> 1.  ...  S6b      11. Rx3d P'3c
> 2.  P7f  P5d      12. R3f  K6c
> 3.  P4f  S5c      13. N3g  G7c
> 4.  P4e  G3b      14. G7h  P6e
> 5.  S4h  K5b      15. K6i  G6d
> 6.  S4g  G6b      16. G5h  N7c
> 7.  P3f  P7d      17. S6h  P8d
> 8.  P3e  S2b      18. P9f  P9d
> 9.  R3h  P6d      19. S4f  P8e
> 10. P3d  Px3d     20. P5f  L1b
>         21. S3e
>
> And this variation goes..
>
> 21. ...  S4b
> 22. R4f  S23a
> 23. P4d  Px4d
> 24. Bx4d K7b
> 25. N4e  P'4c
> 26. B5c+ Sx5c
> 27. Nx5c+
>
> And now, L.Kaufmann gives 27. .. B'7a as this pins the promoted knight and
> attack it, so after 28. S'6b Bx6b
>                     29. +Nx6b  Kx6b
>                     30. B'8b      the king looks safer and the mate seems
> very long to reach. I agree and this seems to be an effective defense. But
> why do white have to render the bishop ?
>
> What about 27. ... B'2h ? attacking the rook with sente (black cannot keep
> attacking only with the promoted knight and the silver in hand) and aiming
> to retreat as a horse on 6d, even at the cost of a gold against the
> promoted knight: the silver on 3b and the horse on 6d are guarding all the
> promoted area of the rook, keeping in mind a horse is worth 3 generals..!
>
> So I'll try to propose some "convincing" variations (I mean convincing for
> me):
>
> First I think the rook should retreat in 4i, because on 4h the bishop
> would go on 3g attacking the rook again..
>
> 28. R4i   G6c
> 29. +Nx4c B6d+
> 30. +Nx3b Sx3b

     A nice idea, but 29 S*6a instead of +Nx4c wins immediately for black.
So the line I gave is correct.

> Sylvain Ferrieres.
>
     Larry Kaufman