Fascinating imbalance

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

Moderators: hgm, Rebel, chrisw

peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Fascinating imbalance

Post by peter »

Nordlandia wrote: [d]Q1b3k1/p1q2n1p/1pn2bp1/2p5/5P2/3PB3/PPP3PP/R4RK1 w - - 0 18
A little too much imbalance in favour of Black here too, as it seems:

Q1b3k1/p1q2n1p/1pn2bp1/2p5/5P2/3PB3/PPP3PP/R4RK1 w - - 0 1

Analysis by pedantFishW_2017-04-08_popcnt:

18.f5 g5 19.Rae1 Nfd8 20.Bxg5 Bxg5 21.f6 Kf7 22.Re7+ Nxe7 23.fxe7+ Kxe7 24.Qe4+ Kd6 25.d4 Qg7 26.dxc5+ bxc5 27.Qf3 Qe5 28.Kh1 Be7 29.c3 Nc6 30.Kg1 Kc7 31.Qf4 Qxf4 32.Rxf4 Be6 33.b3 Bg5 34.Re4 Bf5 35.Re1 c4 36.bxc4 Bd2 37.Rd1 Bxc3 38.Kf2 Be6 39.Rc1
-+ (-4.84) Depth: 36/70 00:01:56 3452MN
Peter.
peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Fascinating imbalance

Post by peter »

Nordlandia wrote: [d]1r2k2r/1p1bpp1p/p2p2p1/8/1qP1PN2/2NPB1P1/5KBP/Q7 b k - 0 19
Also not fitting to my definition of imbalanced if one side's winning already with some probability, here White again:

1r2k2r/1p1bpp1p/p2p2p1/8/1qP1PN2/2NPB1P1/5KBP/Q7 b k - 0 1

Analysis by pedantFishW_2017-04-08_popcnt:
19...f6 20.Ncd5 Qa4 21.Qb2 g5 22.Ne2 Bg4 23.Nb6 Qc6 24.e5 Qc7 25.exf6 exf6 26.Bxg5 0-0 27.Bh6 Qc5+ 28.Nd4 Qh5 29.Bxf8 Rxf8 30.Nd5 Qe5 31.Ne3 Bc8 32.Bd5+ Kh8 33.Qb6 Re8 34.Nf3 Qe7 35.Be4 f5 36.Qd4+ Qg7 37.Nxf5 Bxf5 38.Bxf5 Qxd4+ 39.Nxd4 Rf8 40.g4 Rb8 41.Ke3 b5 42.cxb5 axb5 43.Kd2 h6 44.Kc3 Kg7 45.Kb4 Kf6 46.h4 Ra8 47.Be4 Rg8 48.Bf5 Ke5 49.Nxb5
+- (2.29) Depth: 38/64 00:02:52 4755MN
Peter.
User avatar
Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Fascinating imbalance

Post by Nordlandia »

Spesific imbalances can be found by using «Similar Endgames» in Chessbase 14.

Image
peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Fascinating imbalance

Post by peter »

Nordlandia wrote:Spesific imbalances can be found by using «Similar Endgames» in Chessbase 14.

Image
But what does that "similar endgame" have in common with the position of your imbalanced one, I had quoted, Jon
[d]3r1rk1/p1p1p3/2p4p/4Npp1/q3N1P1/7b/P2BPP1P/2Q3KB w - - 0 25
:?:
Peter.
User avatar
Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Fascinating imbalance

Post by Nordlandia »

Peter -> that position is just example position.

If you're are looking after certain material configurations, a simple search is enough to do all the work for you, instead of reading many endgame books.

I can do search for you and share games in .pgn

Please post fen positions.
User avatar
Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Fascinating imbalance

Post by Nordlandia »

Stockfish evaluation: +1.35

[d]q3kbnr/p1Q3pp/4b3/8/4p3/8/PPPP1PPP/R1B2RK1 b - - 0 13

«White may have the material advantage of rook and three pawns for couple of minor pieces, but the risk is that Black's pieces will come into play with great effect»

[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[PlyCount "27"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 fxe4 5. Nxe4 d5 6. Nxe5 dxe4 7. Nxc6 bxc6
8. Bxc6+ Bd7 9. Qh5+ Ke7 10. Qe5+ Be6 11. Bxa8 Qxa8 12. Qxc7+ Ke8 13. O-O Be7
14. b3 *[/pgn]

Chessbase viewer - http://www.viewchess.com/cbreader/2017/ ... 73640.html
User avatar
Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Fascinating imbalance

Post by Nordlandia »

Stockfish evaluation: -0.55

[d]r2qk3/ppp4p/2pbbPr1/5p2/7Q/2P5/PP1P1PPP/RNB1K2R w KQq - 0 12

Stockfish evaluation: +0.70

[d]r1b1k2r/pp4pp/2pp2n1/8/B3n3/2P1B3/PP3PPP/RN3RK1 w kq - 0 14
User avatar
Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Fascinating imbalance

Post by Nordlandia »

Stockfish evaluation: +0.50

[d]r3k2r/pp4pp/2nB4/5QN1/3p4/8/b5PP/6K1 w kq - 0 23

https://nb.lichess.org/9o05uehG#44
peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Fascinating imbalance

Post by peter »

Hi Jon!
Nordlandia wrote:Stockfish evaluation: +0.50

[d]r3k2r/pp4pp/2nB4/5QN1/3p4/8/b5PP/6K1 w kq - 0 23
Static Evaluation is -0.04
https://hxim.github.io/Stockfish-Evaluation-Guide/
Dynamic one after some Forward- Backward: (15 moves in 30 minutes fw and bw together):

r3k2r/pp4pp/2nB4/5QN1/3p4/8/b5PP/6K1 w kq - 0 1

Analysis by pedantFishW_2017-04-22_popcnt:

23.Qe4+ Kd7 24.Bg3 Rae8 25.Qc2 h6 26.Nf3 Bf7 27.Nxd4 Rd8 28.Nb5 Rhe8 29.Qc3 Re7 30.Nd6 b6 31.Qxg7 Rg8 32.Qxh6 Rxg3 33.hxg3 Re6 34.Qf8 Rxd6 35.Qxf7+ Ne7 36.g4 b5 37.Qb3 Rb6 38.g5 Ke8 39.Qb4 a6 40.Kf2 Rg6 41.Qc5 Kf7 42.Kf3 Re6 43.Qd4 Kg6 44.Kg4 Rc6 45.Qe4+ Kf7 46.Qh7+ Kf8 47.Qd3 Kg7 48.Kh5 Kf7 49.Qb3+ Kf8 50.Qe3 Kf7 51.Qa7 Kf8
+/- (1.50) Depth: 40/104 00:07:33 13792MN, tb=5241632
Peter.
User avatar
Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Fascinating imbalance

Post by Nordlandia »

Imbalance: NN vs R

[d]4k3/ppp3pp/8/4N3/2N1P3/1PK5/2P3PP/3r4 b - - 0 1

[d]2kr4/p1p3p1/1p5p/4N3/N7/2P3PP/PP2K3/8 w - - 0 1

[d]5rk1/pp4pp/8/8/3pN3/3P2P1/PP1N2KP/8 b - - 0 28

[d]5rk1/6pp/8/p2N4/1p2p1NP/8/PPP3P1/7K b - - 0 37

[d]2k5/pp6/2p3r1/5p2/3Pp3/P3P1P1/KPN1N3/8 b - - 0 42

[d]8/1p1k3R/p6p/P1p1n1pn/8/2P1P1P1/1P2K3/8 b - - 0 49

[d]5rk1/1p4p1/p7/7p/PPP1p2P/4N3/6P1/5N1K b - - 0 45

[d]6k1/5p1p/p5p1/1p6/3N4/PP6/4KPPP/2r2N2 b - - 0 24

[d]8/p1r4p/1p2kp2/1N4p1/8/PP1N1P2/3K2PP/8 b - - 0 40

[d]6k1/p5p1/4p2p/1p2N2P/3N1P2/PP2K3/6P1/r7 b - - 0 47

[d]5rk1/1N3p1p/pp1N2p1/8/8/1P2B1P1/P1r2P1P/5K2 b - - 0 32

[d]6k1/p6p/1pnRn1p1/2p5/4P3/5P2/P3K1PP/8 b - - 0 31

[d]3n1k2/p2R1p1p/1pn3p1/8/4P3/6P1/P4P1P/6K1 b - - 0 42