New hard positions since January

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Vinvin
Posts: 4244
Joined: Thu Mar 09, 2006 8:40 am
Full name: Vincent Lejeune

New hard positions since January

Post by Vinvin » Thu Jun 13, 2019 10:34 pm

Not a lot of new positions for 6 months :

1r3bk1/rnR2p1p/pp2pnp1/3p4/3P4/1P2PB1P/P2BNPP1/R5K1 w - - bm a4;
rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm Nf6+; -> Not sure it's enough to win !
1b2k1q1/4ppPp/1pK5/3pP3/3P4/1P6/8/2Q5 w - - bm Qh6;
r1bq1b1r/pp1pp1pp/2n1k3/8/4nQ2/N1p1BN1P/PP3PP1/R3K2R w KQ - bm Nb5;
2b3r1/1p1p2pk/2nBp2p/2P1Ppq1/R7/4QBPP/5P2/5K2 w - - bm Qxg5;
rnbq1rk1/p3bp2/2p1p1p1/1p1nP1P1/2pP1P2/2N5/PP4P1/RBBQK2R w KQ - bm Bd2;

Source :
viewtopic.php?f=2&t=70438&p=796382#p796382
viewtopic.php?f=2&t=70581&p=796960#p796960
viewtopic.php?f=2&t=70752&p=799378#p799378
viewtopic.php?f=2&t=70835
viewtopic.php?p=797836#p797836
viewtopic.php?p=793441#p793441

Vinvin
Posts: 4244
Joined: Thu Mar 09, 2006 8:40 am
Full name: Vincent Lejeune

Re: New hard positions since January

Post by Vinvin » Fri Jun 14, 2019 10:40 am

I still have to dig in this set : viewtopic.php?f=2&t=69687

zullil
Posts: 5266
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Location: PA USA
Full name: Louis Zulli

Re: New hard positions since January

Post by zullil » Fri Jun 14, 2019 3:25 pm

Vinvin wrote:
Thu Jun 13, 2019 10:34 pm
Not a lot of new positions for 6 months :
...
rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm Nf6+; -> Not sure it's enough to win !
...
Source :
viewtopic.php?f=2&t=70438&p=796382#p796382
viewtopic.php?f=2&t=70581&p=796960#p796960
viewtopic.php?f=2&t=70752&p=799378#p799378
viewtopic.php?f=2&t=70835
viewtopic.php?p=797836#p797836
viewtopic.php?p=793441#p793441
Not sure Nf6+ is even "best". Cfish-dev seems to prefer g3:

+0.98 25. g3 Nd7 26. Kf1 Nb6 27. Rc1 Kf7 28. Re3 Rfd8 29. Ke2 Rac8 30. Rec3 Rd4 31. Nf2 Kg6 32. R1c2 c6 33. bxc6 Rxc6 34. Bc1 Nc8 35. Be3 Rd7 36. Ne4 Rcc7 37. Rb2 Kf5 38. Kf3 Rd1 39. Rg2 Kg6 40. Rg1 Rxg1 41. Bxg1 Kf5 42. Be3 Nb6 43. Rc1 Rd7 44. Nf2 Rd8 45. Ke2 Nc8 46. Nd3 Rd7 47. Nb2 b6 48. Bf2 Bd8 49. Rb1 Kg4 50. Nd1 Kf5 51. Kf3 Kg6 52. Ne3 Rd4 53. Rd1 Be7 54. Ke2 Na7 55. Rb1 Bd8 56. Nd1 Rd7 57. Nc3 Nc6 58. Nxa4 Ra7 59. Nxb6 Rxa3 60. Nc8 Nd4+ 61. Bxd4 cxd4 62. Rd1 Rxg3 (depth 62, 4:30:13)

AW~
Posts: 8
Joined: Thu Aug 16, 2018 8:56 pm
Full name: Adonis Wilson

Re: New hard positions since January

Post by AW~ » Sat Jun 15, 2019 4:51 am

Heres another one for you...
r2qrbk1/1b3pp1/pn3n1p/1P2N3/4P3/p6P/1BBN1PP1/R2QR1K1 w - - 0 20

I got the continuation as 20.Nxf7 Kxf7 21.Bb3+ Bd5 22.Bxf6 Bxb3 23.Qxb3+ Kxf6 24.Qf3+ Ke6 25.Qf5+ Ke7 26.e5 Qd5 27.Ne4 Qe6 28.Qf3 a2...but cant say for sure the tactical engine is positive white is winning.

Dann Corbit
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Location: Redmond, WA USA
Contact:

Re: New hard positions since January

Post by Dann Corbit » Sat Jun 15, 2019 5:05 am

Vinvin wrote:
Fri Jun 14, 2019 10:40 am
I still have to dig in this set : viewtopic.php?f=2&t=69687
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Dann Corbit
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Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: New hard positions since January

Post by Dann Corbit » Sat Jun 15, 2019 5:06 am

Dann Corbit wrote:
Sat Jun 15, 2019 5:05 am
Vinvin wrote:
Fri Jun 14, 2019 10:40 am
I still have to dig in this set : viewtopic.php?f=2&t=69687
I have analyzed all of them. I have different answers for about half
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

zullil
Posts: 5266
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: New hard positions since January

Post by zullil » Sat Jun 15, 2019 7:41 am

AW~ wrote:
Sat Jun 15, 2019 4:51 am
Heres another one for you...
r2qrbk1/1b3pp1/pn3n1p/1P2N3/4P3/p6P/1BBN1PP1/R2QR1K1 w - - 0 20

I got the continuation as 20.Nxf7 Kxf7 21.Bb3+ Bd5 22.Bxf6 Bxb3 23.Qxb3+ Kxf6 24.Qf3+ Ke6 25.Qf5+ Ke7 26.e5 Qd5 27.Ne4 Qe6 28.Qf3 a2...but cant say for sure the tactical engine is positive white is winning.
Cfish-dev says 0.00:

0.00 20. Nxf7 Kxf7 21. Bb3+ Bd5 22. Bxf6 Bxb3 23. Qxb3+ Kxf6 24. Qf3+ Ke6 25. Qf5+ Ke7 26. e5 Qd5 27. Ne4 Qe6 28. Qf3 a2 29. Nd6 axb5 30. Nf5+ Kd8 31. Rec1 Rc8 32. Rd1+ Kc7 33. Nd6 Bxd6 34. Rxd6 Qc4 35. Qe3 Rb8 36. Rc1 Qxc1+ 37. Qxc1+ Nc4 38. Rd1 Rxe5 39. Qa1 Re2 40. Qxg7+ Kb6 41. Kh2 Rbe8 42. Ra1 Rd8 43. Qxh6+ Rd6 44. Qf8 Rdd2 45. h4 Rxf2 46. Qg8 Kc5 47. h5 b4 48. Qc8+ Kd4 49. Qg4+ Kc3 50. Rc1+ Rc2 51. Rxc2+ Rxc2 52. h6 Ne3 53. Qg7+ Kb3 54. h7 Rxg2+ 55. Qxg2 Nxg2 (depth 53, 0:07:23)

Vinvin
Posts: 4244
Joined: Thu Mar 09, 2006 8:40 am
Full name: Vincent Lejeune

Re: New hard positions since January

Post by Vinvin » Wed Jul 03, 2019 8:50 am

2 more :
r3r1k1/1b1nbp1p/1qn1p3/1p1pPp2/p2P4/P2BNN2/1P1Q1BPP/R4RK1 w - - bm Ng4;
r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - bm Rxd7;

From :
viewtopic.php?f=2&t=71108 and viewtopic.php?p=802990#p802990

Dann Corbit
Posts: 9771
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
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Re: New hard positions since January

Post by Dann Corbit » Wed Jul 03, 2019 4:44 pm

Vinvin wrote:
Fri Jun 14, 2019 10:40 am
I still have to dig in this set : viewtopic.php?f=2&t=69687
i have analyzed them all
I'll try to dig it up today
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Paloma
Posts: 766
Joined: Thu Dec 25, 2008 8:07 pm

Re: New hard positions since January

Post by Paloma » Fri Jul 05, 2019 10:01 am

Code: Select all

i have analyzed them all
I'll try to dig it up today
:?: :?:

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