Gab's test position 2

[gleperlier]

[D]2rr2k1/pbqn1pp1/3bpn2/1B4N1/3P3R/P1N1B3/1PQ2P2/2R1K3 w - - 0 23

Black just played 22...Bd6 (0.18) and white wins

[Dan Astrachan]

[D]2rr2k1/pbqn1pp1/3bpn2/1B4N1/3P3R/P1N1B3/1PQ2P2/2R1K3 w - - 0 23

Analysed the position for 30 minutes with three engines. All of them chose
23 Bd3 as best move.

- (IvanHoe999946h, 4-Gb hash)
bm Bb5-d3

Code: Select all

 27	27:55	17 771 957 936	10 616 000	+1,24	Bb5-d3 Nd7-b6 Bd3-h7+ Kg8-f8 Bh7-g6 Nb6-c4 Qc2-e2 Bd6-g3 Rh4-h8+ Kf8-e7 Rh8xd8 Qc7xd8 Ng5xf7 Qd8-c7 Nc3-d1 Bb7-a6 Qe2-f3 Bg3-h2 Be3-d2 Qc7-b7 Bd2-b4+ Ke7-d7 Qf3xb7+ Ba6xb7 b2-b3 Nc4-d6 Nf7-e5+ Bh2xe5 Rc1xc8 Nd6xc8 d4xe5 Nf6-g4 f2-f4 Nc8-e7 Bg6-d3 Ne7-d5 Bb4-d2 Ng4-h6 b3-b4 Nh6-f5 Ke1-e2 Nf5-d4+ Ke2-f2 Kd7-e7 b4-b5 Nd4-b3 Bd2-e3 Nd5xe3 Kf2xe3

- (Strelka_5.5x64, 1-Gb hash)
bm Bb5-d3

Code: Select all

23	14:43	2 009 049 240	2 275 052	+2,71	Bb5-d3 Nd7-b6 Bd3-h7+ Kg8-f8 Bh7-g6 Nb6-c4 Qc2-e2 Bd6-g3 Rh4-h8+ Kf8-e7 Rh8xd8 Qc7xd8 Ng5xf7 Qd8-c7 Nc3-a2 Bb7-a6 Be3-g5 Qc7-c6 f2xg3 Qc6-h1+ Qe2-f1 Qh1xf1+ Ke1xf1 Nc4-e5+ Kf1-e1 Ne5xf7 Bg5-f4 Nf6-d5 Rc1xc8 Ba6xc8 Bf4-b8 a7-a5 Bg6-d3 Nf7-g5 Bb8-a7 e6-e5 Na2-c3 Nd5xc3 Ba7-c5+ Ke7-f7 b2xc3 e5xd4 c3xd4

- (Critter_1.6a_64bit,-Gb hash)
bm Bb5-d3

Code: Select all

 24/63-	22:22	12 765 427 219	9 510 617	+1,28	Bb5-d3 Nd7-b6 Bd3-h7+ Kg8-f8 Bh7-g6 Nb6-c4 Qc2-d3 Bd6-g3 Rh4-h8+ Kf8-e7 Rh8xd8 Qc7xd8 Ng5xf7 Qd8-c7 Nc3-e2 Bg3-h4 Be3-f4 Qc7-a5+ b2-b4 Qa5-d5 Qd3-h3 Qd5-h1+ Qh3xh1 Bb7xh1 Nf7-d6 Nc4xd6 Bf4xd6+ Ke7-d7 Rc1xc8 Kd7xc8 Bd6-c5 Nf6-e4 Bg6xe4 Bh1xe4 Bc5xa7 g7-g5 a3-a4 g5-g4 Ba7-c5 Kc8-b7 b4-b5 Bh4-d8 Ne2-f4 Be4-c2 Nf4xe6 Bd8-a5+ Ke1-e2 Bc2xa4

[gleperlier]

Hello,

Yes 23.Bd3 as won quickly in this game

I used Stockfish because SF found this winning line in a blitz 4 which is very nice.

Cheers,

Gab

[D]2rr2k1/pbqn1pp1/3bpn2/1B4N1/3P3R/P1N1B3/1PQ2P2/2R1K3 w - - 0 1

Analysis by stockfish 120331P intel x64:

23.Bb5-d3 Nd7-b6 24.Bd3-h7+ Kg8-f8 25.Bh7-g6 Nb6-c4 26.Qc2-d3 Bd6-g3 27.Rh4-h8+ Kf8-e7 28.Rh8xd8 Rc8xd8 29.Ng5xf7 Nc4xb2 30.Qd3-e2
+- (2.14 ++) Depth: 31/53 00:38:00 2084mN