"Interesting" position.

Discussion of anything and everything relating to chess playing software and machines.

Moderators: hgm, Rebel, chrisw

muxecoid
Posts: 150
Joined: Sat Jan 30, 2010 10:54 am
Location: Israel

"Interesting" position.

Post by muxecoid »

[D] r1q1k2r/1b1p1pb1/pp1Pp1p1/2p1P1Bp/P1BnN3/8/1PP1QPPP/R2R2K1 w kq - 0 17

What does your favorite engine think given enough time?
Top
User avatar
Ponti
Posts: 493
Joined: Wed Mar 15, 2006 6:13 am
Location: Curitiba - PR - BRAZIL

Re: "Interesting" position.

Post by Ponti »

What happens after 1. Bf6...
A. Ponti
AMD Ryzen 1800x, Windows 10.
FIDE current ratings: standard 1913, rapid 1931
Top
zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: "Interesting" position.

Post by zullil »

muxecoid wrote:[D] r1q1k2r/1b1p1pb1/pp1Pp1p1/2p1P1Bp/P1BnN3/8/1PP1QPPP/R2R2K1 w kq - 0 17

What does your favorite engine think given enough time?
Critter-1.4 (8 threads):

Code: Select all

31/74  148:31 95806269877 10751394  +0.58 Qe3 Bxe4 Qxe4 Qc6 Qxc6 Nxc6 f4 Bh6 Bf6 Rg8 Rf1 Bg7 Bg5 f6 exf6 Bh8 c3 Kf7 Bh4 Bxf6 Bf2 Rgc8 Bd3 Na5 Rad1 Nb3 Bc4 Na5 Be2 Kg7 Be3 h4 Bf2 Ra7 h3 Rh8 Bd3 Rb8 Rfe1 Rh8 Be4 Nc4 Re2 Rf8
Top
Terry McCracken
Posts: 16465
Joined: Wed Aug 01, 2007 4:16 am
Location: Canada

Re: "Interesting" position.

Post by Terry McCracken »

Ponti wrote:What happens after 1. Bf6...
Nxe2+ Not a good idea.
Terry McCracken
Top
Terry McCracken
Posts: 16465
Joined: Wed Aug 01, 2007 4:16 am
Location: Canada

Re: "Interesting" position.

Post by Terry McCracken »

muxecoid wrote:[D] r1q1k2r/1b1p1pb1/pp1Pp1p1/2p1P1Bp/P1BnN3/8/1PP1QPPP/R2R2K1 w kq - 0 17

What does your favorite engine think given enough time?
Engine? Most won't sac the exchange, 17. Rxd4. Maybe none? You might have to change the weights?
Terry McCracken
Top
User avatar
michiguel
Posts: 6401
Joined: Thu Mar 09, 2006 8:30 pm
Location: Chicago, Illinois, USA

Re: "Interesting" position.

Post by michiguel »

muxecoid wrote:[D] r1q1k2r/1b1p1pb1/pp1Pp1p1/2p1P1Bp/P1BnN3/8/1PP1QPPP/R2R2K1 w kq - 0 17

What does your favorite engine think given enough time?
Rxd4 is the only move that Gaviota considers (at least this experimental version).

Miguel

Code: Select all

setboard r1q1k2r/1b1p1pb1/pp1Pp1p1/2p1P1Bp/P1BnN3/8/1PP1QPPP/R2R2K1 w kq - 0 17 
d
+-----------------+
| r . q . k . . r |
| . b . p . p b . |
| p p . P p . p . |
| . . p . P . B p |    Castling: kq
| P . B n N . . . |    ep: -
| . . . . . . . . |
| . P P . Q P P P |
| R . . R . . K . | [White]
+-----------------+

analyze
iterative deepening --> start, thread=0
set timer to infinite
       249   1:      0.0    -0.12  9.Rxd4 cxd4
       524   2:      0.0    -0.04  9.Rxd4 cxd4 10.Nf6+ Kd8
       943   3:      0.0    -0.04  9.Rxd4 cxd4 10.Nf6+ Kd8
      1673   4:      0.0    +0.09  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 O-O
      2734   5:      0.0    +0.07  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 O-O
                                   12.f3
      5232   6:      0.0    -0.15  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 O-O
                                   12.Be7 Re8
     11179   7:      0.1    -0.15  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 O-O
                                   12.Be7 [TT]
     17172   8       0.1    -0.25  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 O-O
                                   12.f3 Qc5 13.Rd1
     27786   8:      0.1    -0.25  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 O-O
                                   12.f3 Qc5 13.Rd1
     37295   9       0.1    -0.35  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 O-O
                                   12.Be7 Qc6 13.f3 Rfe8
     51514   9:      0.2    -0.35  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 O-O
                                   12.Be7 Qc6 13.f3 Rfe8
     69376  10       0.2    -0.38  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 O-O
                                   12.Be7 Qc6 13.f3 Rfc8 14.Bb3
    131464  10:      0.4    -0.38  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 O-O
                                   12.Be7 Qc6 13.f3 Rfc8 14.Bb3
    214966  11       0.6    -0.22  9.Rxd4 cxd4 10.f4 O-O 11.Bd3 Rb8
                                   12.Nf6+ Bxf6 13.Bxf6 Qc5 14.Qf2 a5
    260745  11:      0.7    -0.22  9.Rxd4 cxd4 10.f4 O-O 11.Bd3 Rb8
                                   12.Nf6+ Bxf6 13.Bxf6 Qc5 14.Qf2 a5
    361961  12       1.0    -0.17  9.Rxd4 cxd4 10.f4 O-O 11.Bd3 Rb8 12.Be7
                                   Re8 13.Nf6+ Bxf6 14.Bxf6 Qc5 15.Qf2 a5
                                   <EMPTY> &#91;TT&#93;
    435018  12&#58;      1.2    -0.17  9.Rxd4 cxd4 10.f4 O-O 11.Bd3 Rb8 12.Be7
                                   Re8 13.Nf6+ Bxf6 14.Bxf6 Qc5 15.Qf2 a5
                                   <EMPTY> &#91;TT&#93;
    573937  13       1.5    -0.17  9.Rxd4 cxd4 10.f4 O-O 11.Bd3 Rb8 12.Be7
                                   Re8 13.Nf6+ Bxf6 14.Bxf6 Qc5 15.Qf2
                                   &#91;TT&#93;
    699187  13&#58;      1.9    -0.17  9.Rxd4 cxd4 10.f4 O-O 11.Bd3 Rb8 12.Be7
                                   Re8 13.Nf6+ Bxf6 14.Bxf6 Qc5 15.Qf2
                                   &#91;TT&#93;
   1131769  14       3.0    -0.12  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd1 a5 14.Ra3 Rc8 15.f3
                                   Qb4 16.Rb3
   1345177  14&#58;      3.6    -0.12  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd1 a5 14.Ra3 Rc8 15.f3
                                   Qb4 16.Rb3
   1738506  15       4.6    -0.01  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.f3
                                   Qb4 16.Qc1 Rc8
   2078737  15&#58;      5.6    -0.01  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.f3
                                   Qb4 16.Qc1 Rc8
   2768473  16       7.5    -0.11  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.a5 bxa5 13.Rxa5 Qc6 14.Qf1 Rc8
                                   15.Bd3 Qb6 16.Qa1 Rc5 17.Ra4
   3829440  16&#58;     10.6    -0.11  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.a5 bxa5 13.Rxa5 Qc6 14.Qf1 Rc8
                                   15.Bd3 Qb6 16.Qa1 Rc5 17.Ra4
   4868584  17      13.4    -0.11  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.Qd2
                                   Qb4 16.c3 dxc3 17.bxc3 Qc5 18.Rb1
   6233643  17&#58;     17.3    -0.11  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.Qd2
                                   Qb4 16.c3 dxc3 17.bxc3 Qc5 18.Rb1
   7640281  18      21.1    -0.06  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.Qd2
                                   Kg8 16.Qg5 Qd5 17.f3 Rc8 18.Qf4
   9893415  18&#58;     27.7    -0.06  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.Qd2
                                   Kg8 16.Qg5 Qd5 17.f3 Rc8 18.Qf4
  13006505  19      36.2    +0.00  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.Bxg6
                                   fxg6 16.Qxg6 Qc6 17.Be7+ Rxe7 18.dxe7+
                                   Kxe7 19.Qf6+ Ke8 20.Qh8+ Ke7 21.Qf6+
  16957161  19&#58;     47.4    +0.00  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.Bxg6
                                   fxg6 16.Qxg6 Qc6 17.Be7+ Rxe7 18.dxe7+
                                   Kxe7 19.Qf6+ Ke8 20.Qh8+ Ke7 21.Qf6+
  22409017  20      62.3    +0.00  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.Bxg6
                                   fxg6 16.Qxg6 Qc6 17.Be7+ Rxe7 18.dxe7+
                                   Kxe7 19.Qf6+ Ke8 20.Qh8+ Ke7 21.Qf6+
  33841014  20&#58;     95.4    +0.00  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.Bxg6
                                   fxg6 16.Qxg6 Qc6 17.Be7+ Rxe7 18.dxe7+
                                   Kxe7 19.Qf6+ Ke8 20.Qh8+ Ke7 21.Qf6+
  46880275  21     131.0    +0.00  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.Bxg6
                                   fxg6 16.Qxg6 Qc6 17.Be7+ Rxe7 18.dxe7+
                                   Kxe7 19.Qf6+ Ke8 20.Qh8+ Ke7 21.Qf6+
  75330682  21&#58;    212.7    +0.00  9.Rxd4 cxd4 10.Nf6+ Bxf6 11.Bxf6 Rh7
                                   12.Bd3 Qc5 13.Qd2 a5 14.Qg5 Kf8 15.Bxg6
                                   fxg6 16.Qxg6 Qc6 17.Be7+ Rxe7 18.dxe7+
                                   Kxe7 19.Qf6+ Ke8 20.Qh8+ Ke7 21.Qf6+
Top
muxecoid
Posts: 150
Joined: Sat Jan 30, 2010 10:54 am
Location: Israel

Re: "Interesting" position.

Post by muxecoid »

When this position happened in my game (fast game on FICS) I played Rxd4. After a few obvious moves:

[D] r3k2r/1b1p1p2/ppqPpBp1/4P2p/P1Bp4/5P2/1PP1Q1PP/R5K1 b kq - 0 20

Black is exchange up but has no counter-play. Komodo 3 immediately says white is better. Critter needs long time to give white positive eval.


P.S: Qe3 as suggested by Critter is also exchange sac but it can not be accepted. If black accepts:
[D] r1q1k2r/3p1pb1/pp1Pp1p1/2p1P1Bp/P1B1Q3/8/1P3PPP/n2R2K1 w kq - 0 20
white has crushing Bxe6!!
Top
ZirconiumX
Posts: 1334
Joined: Sun Jul 17, 2011 11:14 am

Re: "Interesting" position.

Post by ZirconiumX »

FruitFly with modified piece values:

Score : -0.13
Depth : 18/1
Time : 00:04:37
Nodes : 34510000
N/sec : 124285
1. Qd3 b5 2. axb5 axb5 3. Ba2 Qc6 4. Re1 Bxe5 5. f4 c4 6. Qh3 Bxd6 7. Nf6

Matthew:out
Some believe in the almighty dollar.

I believe in the almighty printf statement.
Top
IanO
Posts: 496
Joined: Wed Mar 08, 2006 9:45 pm
Location: Portland, OR

Re: "Interesting" position.

Post by IanO »

Terry McCracken wrote:
muxecoid wrote:[D] r1q1k2r/1b1p1pb1/pp1Pp1p1/2p1P1Bp/P1BnN3/8/1PP1QPPP/R2R2K1 w kq - 0 17

What does your favorite engine think given enough time?
Engine? Most won't sac the exchange, 17. Rxd4. Maybe none? You might have to change the weights?
As expected, Junior 12.5 will sac the rook within a few seconds. Junior really isn't happy unless it has sacrificed material for counterplay.

+0.36 20/1 1. Rxd4 cxd4 2. Nf6 Bxf6 3. Bxf6 Rh7 4. Be7 Qc5 5. Bd3 Rc8 6. f3 Bd5 7. b3 Qc3 8. Re1 Rc5 9. Bg5 h4 10. h3
Top
Terry McCracken
Posts: 16465
Joined: Wed Aug 01, 2007 4:16 am
Location: Canada

Re: "Interesting" position.

Post by Terry McCracken »

IanO wrote:
Terry McCracken wrote:
muxecoid wrote:[D] r1q1k2r/1b1p1pb1/pp1Pp1p1/2p1P1Bp/P1BnN3/8/1PP1QPPP/R2R2K1 w kq - 0 17

What does your favorite engine think given enough time?
Engine? Most won't sac the exchange, 17. Rxd4. Maybe none? You might have to change the weights?
As expected, Junior 12.5 will sac the rook within a few seconds. Junior really isn't happy unless it has sacrificed material for counterplay.

+0.36 20/1 1. Rxd4 cxd4 2. Nf6 Bxf6 3. Bxf6 Rh7 4. Be7 Qc5 5. Bd3 Rc8 6. f3 Bd5 7. b3 Qc3 8. Re1 Rc5 9. Bg5 h4 10. h3
I forgot about Junior. Sorry Amir...Ok most programs won't consider Rxd4.
Terry McCracken
Top

Return to “Computer Chess Club: General Topics”