[d] r1r3k1/pp3ppp/4pB2/q1bbP3/5Q1P/2N5/PPP3P1/2KR3R w - - 0 18
What's the solution?
Test Position
Moderators: hgm, Rebel, chrisw
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Re: Test Position
18. Bxg7..Kxg7 19. Qf6+..Kg8 20. Rh3! there's a lot more with Kg8 and Kf8 lines and Black can resist for many moves.swami wrote:[d] r1r3k1/pp3ppp/4pB2/q1bbP3/5Q1P/2N5/PPP3P1/2KR3R w - - 0 18
What's the solution?
Terry McCracken
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- Full name: Louis Zulli
Re: Test Position
Crafty 22.9 likes Rh3.
Code: Select all
White(1): display
+---+---+---+---+---+---+---+---+
8 |<R>| . |<R>| . | | . |<K>| . |
+---+---+---+---+---+---+---+---+
7 |<P>|<P>| . | | . |<P>|<P>|<P>|
+---+---+---+---+---+---+---+---+
6 | | . | | . |<P>|-B-| | . |
+---+---+---+---+---+---+---+---+
5 |<Q>| |<B>|<B>|-P-| | . | |
+---+---+---+---+---+---+---+---+
4 | | . | | . | |-Q-| |-P-|
+---+---+---+---+---+---+---+---+
3 | . | |-N-| | . | | . | |
+---+---+---+---+---+---+---+---+
2 |-P-|-P-|-P-| . | | . |-P-| . |
+---+---+---+---+---+---+---+---+
1 | . | |-K-|-R-| . | | . |-R-|
+---+---+---+---+---+---+---+---+
a b c d e f g h
White(1): go
time limit 5:00 (+0.00) (5:00)
depth time score variation (1)
starting thread 1
9 0.11 0.00 Nxd5 exd5 Qg3 Bf8 Kb1 Kh8 Bg5 Bb4 c3
10 0.21 0.10 Nxd5 exd5 Qg3 Bf8 Kb1 Kh8 Bg5 Qa4 c3
Qe4+ Rd3 (s=2)
10 0.51 +1 Rh3!!
10 0.69 0.20 Rh3 Bf8 Rg3 Rxc3 bxc3 Qxa2 Rd4 Rc8
Kd2 g6
11 0.93 0.07 Rh3 Bf8 Rg3 Rxc3 bxc3 Qxa2 Rd4 Kh8
Kd2 Qb1 c4 Bb4+ c3
11 1.32 +1 Nxd5!!
11 1.55 0.99 Nxd5 exd5 Qg4 Be3+ Kb1 Bh6 Bg5 Rc6
Bxh6 Rxh6 Qd7 Rc6 <HT>
12 1.98 0.97 Nxd5 exd5 Qg4 Bf8 e6 Kh8 exf7 Qxa2
Bd4 Qa1+ Kd2 Qa5+ Bc3 Qc5 (s=2)
13 2.94 0.85 Nxd5 exd5 Qg4 Be3+ Kb1 Bh6 Bg5 Bxg5
hxg5 Qc7 Qf5 g6 Qd3 Qxe5 Qxd5 Qxd5
Rxd5
14 5.76 0.85 Nxd5 exd5 Qg4 Be3+ Kb1 Bh6 Bg5 Bxg5
hxg5 Qc7 Qf5 g6 Qd3 Qxe5 Qxd5 Qxd5
Rxd5
15 21.93 0.79 Nxd5 exd5 Qg4 Bf8 e6 fxe6 Qxe6+ Kh8
Rxd5 Qb6 Qxb6 axb6 Bc3 Rxa2 Re1 Bc5
(s=2)
16 52.85 0.39 Nxd5 exd5 Qg4 Bf8 e6 fxe6 Qxe6+ Kh8
Rxd5 Qa4 Bc3 Re8 Qf7 Qxa2 Rhd1 Rac8
Rd7 Qa1+ Kd2 (s=2)
16 1:24 0.87 Rh3 Bf8 Nxd5 exd5 Rg3 g6 Kb1 Rc4 Qf3
Rac8 c3 Re4 Qf5 Qa4 b3 Qc6 <HT>
17 1:53 0.90 Rh3 Bf8 Nxd5 exd5 Rg3 g6 Kb1 Rc4 Qf3
Rac8 c3 Re4 Qf5 Qa4 b3 Qc6 h5 (s=2)
18 3:44 0.83 Rh3 Bf8 Rd4 Bxa2 Rg3 Rxc3 bxc3 g6 Ra4
Ba3+ Kd1 Qd5+ Rd3 Qc5 Rad4 Qb6 Rd8+
Rxd8 Rxd8+ Bf8 g4 Bd5
time=5:00 mat=0 n=1319883136 fh=89% nps=4.4M
terminating SMP processes.
White(1): Rh3
time used: 5:00
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Re: Test Position
Terry,
Yes, looks like it's easier for humans, difficult for some engines...
but Bright 0.4a solves it rather quickly.
Analysis by bright-0.4a:
Yes, looks like it's easier for humans, difficult for some engines...
but Bright 0.4a solves it rather quickly.
Analysis by bright-0.4a:
Code: Select all
18.Nxd5 exd5
+/= (0.34) Depth: 1/6 00:00:00
18.Nxd5 exd5
+/= (0.34) Depth: 2/7 00:00:00
18.Qg5 g6 19.Nxd5 exd5
+/= (0.37) Depth: 2/14 00:00:00
18.Qg5 g6 19.Qh6
+/= (0.45) Depth: 3/14 00:00:00
18.Nxd5 exd5 19.Qg5
+/= (0.49) Depth: 3/17 00:00:00
18.Nxd5 exd5 19.Qg4 g6
+/= (0.39) Depth: 4/17 00:00:00
18.Qg5 g6 19.Qh6 Bf8
+/= (0.59) Depth: 4/17 00:00:00
18.Qg5 g6 19.Nxd5 exd5 20.Qh6
+/- (0.75) Depth: 5/17 00:00:00
18.Qg5 g6 19.Nxd5 exd5 20.Qh6 Bf8
+/- (0.73) Depth: 6/22 00:00:00 17kN
18.Qg5 Bf8 19.Nxd5 exd5 20.Kb1 Rc4 21.g4 Rac8
+/= (0.47) Depth: 7/22 00:00:00 67kN
18.Qg5 Bf8 19.Nxd5 exd5 20.Kb1 Rc4 21.Rd3 Rac8 22.Rg3
+/= (0.47) Depth: 8/31 00:00:00 352kN
18.Qg5 Bf8 19.Nxd5 exd5 20.Kb1 h6 21.Qg4 Kh8 22.Rhf1 gxf6 23.Rxf6
=/+ (-0.50) Depth: 9/31 00:00:00 890kN
18.Rd3 Bf8 19.Nxd5 exd5 20.Kb1 Rc4 21.Qg5 Rac8 22.Rg3 g6
= (0.16) Depth: 9/31 00:00:00 1489kN
18.Bxg7 Kxg7 19.Rhf1 Rc7 20.Qf6+ Kg8 21.Rd3 Re8 22.Nxd5 exd5 23.Rg3+ Kf8 24.Qg7+ Ke7 25.Rxf7+ Kd8
+/- (1.01) Depth: 9/41 00:00:00 2719kN
18.Bxg7 Kxg7 19.Rhf1 Qd8 20.Nxd5 exd5 21.Qxf7+ Kh8 22.Qxb7 Qxh4 23.Qxd5 Be3+ 24.Kb1 Rg8
+/- (0.82) Depth: 10/41 00:00:01 4401kN
18.Bxg7 Kxg7 19.Rhf1 Qc7 20.Qf6+ Kg8 21.Rd3 Be4 22.Rg3+ Bg6 23.h5 Rd8 24.hxg6 hxg6
+/- (0.91) Depth: 11/47 00:00:02 9896kN
18.Bxg7 Kxg7 19.Qf6+ Kg8 20.Rh3 Qd8 21.Rg3+ Kf8 22.Qh6+ Ke7 23.Rg7 Qf8 24.Nxd5+ exd5 25.Rd3 Rc6 26.Qg5+ Kd7 27.Rxh7
+/- (1.06) Depth: 12/47 00:00:06 25866kN
18.Bxg7 Kxg7 19.Qf6+ Kg8 20.Rh3 Qd8 21.Rg3+ Kf8 22.Qh6+ Ke7 23.Rg7 Qf8 24.Rd3 Bb6 25.Nxd5+ exd5 26.g4 Ke8 27.Rxd5
+/- (1.25) Depth: 13/48 00:00:11 45777kN