Benjamin is not the Benjamin...

[Glarean]

.

The new engine Benjamin by Ed Schröder https://www.rebel13.nl/home/benjamin.html is certainly not the big hit in tournament chess.

But in certain positions it shows everyone else how chess works...

5b2/p4pk1/5np1/2r1p2p/2B1r3/1PQR4/P4PKP/8 b - - 0 37
[pgn][Event "CfishR - AllieStein, Comp 2020"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Instagram Chess Puzzles"]
[Black "www.glarean-magazin.ch"]
[Result "*"]
[Annotator "W. Eigenmann & Computer"]
[SetUp "1"]
[FEN "5b2/p4pk1/5np1/2r1p2p/2B1r3/1PQR4/P4PKP/8 b - - 0 37"]
[PlyCount "13"]

37... Rg4+ $1 (37... Rf4 $6 38. Rf3 $11) 38. Kh1 Ne4 39. Qe1 (39. Qc2 Rf4 $17)
39... Rf4 40. f3 Nf6 41. Qe3 (41. Qc3 h4 $17) 41... Rf5 42. Rd8 (42. Qe1 Rc7
$17) 42... Be7 43. Rd1 (43. Rb8 Rc7 $17) 43... h4 $17 *[/pgn]

The solution is ... 37... Rg4+, but this is difficult for:

Eman: >30sec.
Stockfish: >30sec.
Komodo: >30sec.
Houdini: >30sec.
(Ryzen7-8CPU)

But no problem for Benjamin 1.1:

37...Tg4+ 38.Kh1 Se4 39.Db2 Sd6 40.Ld5 Kh7 41.f3 Tf4 42.b4 Tc8 43.Tc3 Tb8 44.a3 Lg7 45.Da2 Sb5 46.Tc6 Lf6 47.Dg2 Le7
Die Stellung ist ausgeglichen: = (-0.06) Tiefe: 12 00:00:01 3052kN
Schwarz hat minimalen Vorteil: = (-0.25) Tiefe: 21 00:04:44 919MN

Benjamin is certainly an asset to the engine scene.

Analysis and PGN: https://glarean-magazin.ch/2018/11/13/m ... -juni-2020

[AdminX]

But, "It's all about the Banjamins baby!"

[zullil]

.

The new engine Benjamin by Ed Schröder https://www.rebel13.nl/home/benjamin.html is certainly not the big hit in tournament chess.

But in certain positions it shows everyone else how chess works...

5b2/p4pk1/5np1/2r1p2p/2B1r3/1PQR4/P4PKP/8 b - - 0 37
[pgn][Event "CfishR - AllieStein, Comp 2020"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Instagram Chess Puzzles"]
[Black "www.glarean-magazin.ch"]
[Result "*"]
[Annotator "W. Eigenmann & Computer"]
[SetUp "1"]
[FEN "5b2/p4pk1/5np1/2r1p2p/2B1r3/1PQR4/P4PKP/8 b - - 0 37"]
[PlyCount "13"]

37... Rg4+ $1 (37... Rf4 $6 38. Rf3 $11) 38. Kh1 Ne4 39. Qe1 (39. Qc2 Rf4 $17)
39... Rf4 40. f3 Nf6 41. Qe3 (41. Qc3 h4 $17) 41... Rf5 42. Rd8 (42. Qe1 Rc7
$17) 42... Be7 43. Rd1 (43. Rb8 Rc7 $17) 43... h4 $17 *[/pgn]

The solution is ... 37... Rg4+, but this is difficult for:

Eman: >30sec.
Stockfish: >30sec.
Komodo: >30sec.
Houdini: >30sec.
(Ryzen7-8CPU)

But no problem for Benjamin 1.1:

37...Tg4+ 38.Kh1 Se4 39.Db2 Sd6 40.Ld5 Kh7 41.f3 Tf4 42.b4 Tc8 43.Tc3 Tb8 44.a3 Lg7 45.Da2 Sb5 46.Tc6 Lf6 47.Dg2 Le7
Die Stellung ist ausgeglichen: = (-0.06) Tiefe: 12 00:00:01 3052kN
Schwarz hat minimalen Vorteil: = (-0.25) Tiefe: 21 00:04:44 919MN

Benjamin is certainly an asset to the engine scene.

Analysis and PGN: https://glarean-magazin.ch/2018/11/13/m ... -juni-2020

No problem for Lc0 (Network 384x30-t60-4082):

info depth 7 seldepth 19 time 2995 nodes 4131 score cp 53 wdl 517 307 176 nps 5597 tbhits 0 pv e4g4 g2h1 f6e4 c3e1 g4f4 f2f3 e4g5 c4d5 f8d6 h2h4 e5e4 d5e4 g5e4 f3e4 d6e5 d3d5

[Nordlandia]

Usually the piece constellation RBN vs QB (opposite-colored bishops) is able to put up some resistance. Mainly because often, it's not easy for the white bishop to trade off the knight if that piece is posted on different color, in addition to the bishop that can't be used as a trading partner.

[Daniel]

Benjamin 1.1 is out?

Interesting…

I’m wondering if it’s possible to combine Benjamin with Rebelfish so that the fish is guarding Benjamin and not ProDeo.

[Nordlandia]

Lc0 outplays SF as black. Even if SF use 0 and negative contempt.

[pgn][Event "i7-5960X 4.5GHz / 2x 2080 Supe"]
[Site "i7-5960X 4.5GHz / 2x 2080 Supe"]
[Date "2020.06.21"]
[Round "?"]
[White "stockfish_x64"]
[Black "lc0"]
[Result "0-1"]
[SetUp "1"]
[FEN "5b2/p4pk1/5np1/2r1p2p/2B1r3/1PQR4/P4PKP/8 b - - 0 37"]
[PlyCount "54"]
[EventDate "2020.??.??"]
[TimeControl "600+10"]

37... Rg4+ {0.59/15 21} 38. Kh1 {-0.67/36 54} Ne4 {0.60/21 24} 39. Qe1 {
-0.19/39 41} Rf4 {0.65/20 35} 40. f3 {-0.13/36 22} Nf6 {0.66/24 26} 41. Rd8 {
0.00/37 56} e4 {0.88/22 52} 42. Rxf8 {-2.16/44 124s} Kxf8 {0.77/24 26} 43. Qe3
{-2.00/39 18} Rcf5 {0.77/20 0.21s} 44. Qxa7 {-1.97/40 23} Nh7 {0.94/24 55} 45.
fxe4 {-1.88/42 22} Rxe4 {0.99/23 12} 46. Bd3 {-1.50/36 23} Re1+ {1.07/24 29}
47. Kg2 {-1.84/38 25} Rfe5 {1.20/25 35} 48. Bc4 {-3.03/43 233s} Rg5+ {1.35/19
77s} 49. Kf2 {-3.24/36 41} Re7 {1.35/20 16} 50. Qa3 {-2.96/32 4.8s} Nf6 {
1.95/15 67s} 51. h3 {-3.33/34 23} h4 {1.93/18 29} 52. Kf1 {-3.77/31 23} Nh5 {
2.23/15 38} 53. Bd3 {-3.01/27 3.8s} Rge5 {2.59/13 35} 54. Kg1 {-3.58/32 15} Re3
{2.98/12 39} 55. Bf1 {-4.16/31 10} Ng3 {3.50/12 37} 56. Bb5 {-5.75/31 13} Kg8 {
4.75/9 39} 57. Qa5 {-7.25/33 11} Nf5 {5.50/9 21} 58. Bf1 {-6.31/26 4.9s} Rd7 {
5.64/9 17} 59. Kf2 {-4.86/29 3.3s} Rd4 {5.98/9 14} 60. Qxf5 {-6.43/29 6.4s}
gxf5 {7.05/11 16} 61. Kxe3 {-7.54/30 8.7s} Rd1 {7.37/10 13} 62. Bc4 {-8.73/33
24} Rh1 {8.07/10 14} 63. b4 {-12.21/29 12} Kf8 {9.91/9 40} 64. b5 {
adjudication -8.68/25 5.1s, Black wins by adjudication} 0-1
[/pgn]

[pgn][Event "i7-5960X 4.5GHz / 2x 2080 Supe"]
[Site "i7-5960X 4.5GHz / 2x 2080 Supe"]
[Date "2020.06.22"]
[Round "?"]
[White "stockfish_20062212_x64_bmi2"]
[Black "lc0"]
[Result "0-1"]
[SetUp "1"]
[FEN "5b2/p4pk1/5np1/2r1p2p/2B1r3/1PQR4/P4PKP/8 b - - 0 37"]
[PlyCount "17"]
[EventDate "2020.??.??"]
[TimeControl "600+10"]

37... Rg4+ {0.59/15 21} 38. Kh1 {-0.17/38 87s} Ne4 {0.62/18 22} 39. Qe1 {
-0.64/39 68s} Rf4 {0.66/20 34} 40. f3 {-0.31/37 15} Nf6 {0.66/23 24} 41. Qe3 {
-0.55/42 43} Rf5 {0.63/19 32} 42. Qe1 {-0.57/39 90s} Rc6 {0.86/14 77s} 43. a4 {
-0.48/35 41} a5 {0.99/18 40} 44. Re3 {-1.15/43 72s} Bb4 {1.13/18 42} 45. Qa1 {
-1.15/47 10} h4 {adjudication +1.16/19 23s, Black wins by adjudication: user
decision} 0-1
[/pgn]