These positions are too easy for engines around 2500-2600

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pichy
Posts: 2564
Joined: Thu Mar 09, 2006 3:04 am

These positions are too easy for engines around 2500-2600

Post by pichy »

http://www.chessbase.com/newsdetail.asp?newsid=7998
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yanquis1972
Posts: 1766
Joined: Wed Jun 03, 2009 12:14 am

Re: These positions are too easy for engines around 2500-260

Post by yanquis1972 »

i think fens would help..
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pichy
Posts: 2564
Joined: Thu Mar 09, 2006 3:04 am

Re: These positions are too easy for engines around 2500-260

Post by pichy »

yanquis1972 wrote:i think fens would help..
I will post the first position form the Chessbase site that I provided. White to move and find the best move Nd2! blocking the Rook and winning it with the White King in the next move :wink:

[d]2rq1nk1/4bp2/4p1pB/Pp1pP3/1p1P2Q1/5NP1/1P2rPK1/RR6 w - - 2 1


=====================================================================================================================

The next position black simply play Nd7! and trap the White Knight:

[d]8/8/4kn2/3p4/N1pP4/1pP5/1P6/2K5 b - - 2 1


======================================================================================================================


Black to play, and most engines will find 27....Rxe4!

[d]2r1r1k1/3n1pp1/p2p1bbp/1ppP4/2n1PPP1/1P4BP/q1B1R1KN/1RQ3N1 b - - 2 1
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Albert Silver
Posts: 3026
Joined: Wed Mar 08, 2006 9:57 pm
Location: Rio de Janeiro, Brazil

Re: These positions are too easy for engines around 2500-260

Post by Albert Silver »

FWIW, they are aimed at players 1500-1900 or so.
"Tactics are the bricks and sticks that make up a game, but positional play is the architectural blueprint."
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ZirconiumX
Posts: 1366
Joined: Sun Jul 17, 2011 11:14 am
Full name: Hannah Ravensloft

Re: These positions are too easy for engines around 2500-260

Post by ZirconiumX »

FruitFly finds #1 easily:

Score : +2.56
Depth : 2/1
Time : 00:00:00
Nodes : 633
N/sec : 1899
1. Nd2 Rxd2 2. Bxd2

FruitFly needs a bit more depth for #2, but still solves it:

Score : -1.02
Depth : 12/1
Time : 00:00:00
Nodes : 2534
N/sec : 11695
1... Nd7 2. Kd2 Kd6 3. Kd1 Kc6 4. Kc1 Kb5 5. Nc5 Nxc5 6. dxc5 Kc6 7. Kd2 Kxc5

FruitFly finds this rather easily

Score : -3.20
Depth : 7/1
Time : 00:00:00
Nodes : 49030
N/sec : 55505
1... Rxe4 2. f5 Rxe2 3. Nxe2 Re8 4. Nf4 Ne3 5. Kg1 Nxc2 6. fxg6

Note though how all problems were solved in less than a second.

Matthew:out
tu ne cede malis, sed contra audentior ito
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pichy
Posts: 2564
Joined: Thu Mar 09, 2006 3:04 am

Re: Why does Chessbase post such easy puzzles in their site?

Post by pichy »

ZirconiumX wrote:FruitFly finds #1 easily:

Score : +2.56
Depth : 2/1
Time : 00:00:00
Nodes : 633
N/sec : 1899
1. Nd2 Rxd2 2. Bxd2

FruitFly needs a bit more depth for #2, but still solves it:

Score : -1.02
Depth : 12/1
Time : 00:00:00
Nodes : 2534
N/sec : 11695
1... Nd7 2. Kd2 Kd6 3. Kd1 Kc6 4. Kc1 Kb5 5. Nc5 Nxc5 6. dxc5 Kc6 7. Kd2 Kxc5

FruitFly finds this rather easily

Score : -3.20
Depth : 7/1
Time : 00:00:00
Nodes : 49030
N/sec : 55505
1... Rxe4 2. f5 Rxe2 3. Nxe2 Re8 4. Nf4 Ne3 5. Kg1 Nxc2 6. fxg6

Note though how all problems were solved in less than a second.

Matthew:out
In how many seconds can FruitFly find the rest of the positions from Chessbase? Why does Chessbase post such an easy puzzles in their website?
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Albert Silver
Posts: 3026
Joined: Wed Mar 08, 2006 9:57 pm
Location: Rio de Janeiro, Brazil

Re: Why does Chessbase post such easy puzzles in their site?

Post by Albert Silver »

See answer above.

Tip: use your brain instead of a 2500-2600 engine.
"Tactics are the bricks and sticks that make up a game, but positional play is the architectural blueprint."
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: These positions are too easy for engines around 2500-260

Post by kgburcham »

This is Deep Fritz 1, Dated 2001.
Running on 4cores at 2.8gig.

[d] 2rq1nk1/4bp2/4p1pB/Pp1pP3/1p1P2Q1/5NP1/1P2rPK1/RR6 w - - 0 1

1.Nd2!
+- (2.19) Depth: 12/25 00:00:01 10610kN
1.Nd2!
+- (2.50) Depth: 13/30 00:00:02 21747kN
1.Nd2 Rxd2 2.Bxd2 Ra8 3.Rh1 Rxa5 4.Rxa5 Qxa5 5.Bg5
+- (2.63) Depth: 14/31 00:00:04 47779kN
1.Nd2 Rxd2 2.Bxd2 Ra8 3.Rh1 Rxa5
+- (2.66) Depth: 15/36 00:00:15 155288kN
1.Nd2 Rxd2 2.Bxd2 Ra8
+- (2.75) Depth: 16/35 00:00:44 449641kN


[d] 8/8/4kn2/3p4/N1pP4/1pP5/1P6/2K5 b - - 0 1

1...Nd7!
-+ (-3.88) Depth: 23/36 00:00:01 11942kN
1...Nd7--
-+ (-3.56) Depth: 24/27 00:00:02 16101kN
1...Nd7--
-+ (-3.56) Depth: 24/41 00:00:03 24408kN
1...Nd7!
-+ (-3.88) Depth: 25/34 00:00:09 63393kN
1...Nd7!
-+ (-4.19) Depth: 26/37 00:00:19 125266kN
1...Nd7--
-+ (-3.88) Depth: 27/35 00:00:32 220303kN
1...Nd7--
-+ (-3.88) Depth: 27/46 00:00:54 466642kN


[d] 2r1r1k1/3n1pp1/p2p1bbp/1ppP4/2n1PPP1/1P4BP/q1B1R1KN/1RQ3N1 b - - 0 1

1...Rxe4-- 2.Rf2 Ne3+ 3.Kh1 c4 4.Bd3 Qa5 5.f5 Ree8 6.fxg6
-+ (-2.38) Depth: 10/32 00:00:00 10534kN
1...Rxe4 2.Rf2 Ne3+ 3.Kh1 c4 4.Bd3 Qa5 5.f5 Ree8
-+ (-2.38) Depth: 11/33 00:00:02 23285kN
1...Rxe4 2.Rf2 Ne3+ 3.Kh1 Rxf4 4.Bxg6 Rxf2 5.Qxe3
-+ (-2.09) Depth: 12/39 00:00:05 69651kN
1...Rxe4 2.Rf2 Ne3+ 3.Kh1 Nxc2 4.f5 Bh7 5.Rxc2
-+ (-2.13) Depth: 13/38 00:00:16 196005kN
1...Rxe4!
-+ (-2.44) Depth: 14/37 00:00:25 315868kN
1...Rxe4! 2.Rf2 Ne3+ 3.Kh1
-+ (-2.91) Depth: 14/37 00:00:44 562738kN
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pichy
Posts: 2564
Joined: Thu Mar 09, 2006 3:04 am

Re: Why does Chessbase post such easy puzzles in their site?

Post by pichy »

Albert Silver wrote:See answer above.

Tip: use your brain instead of a 2500-2600 engine.
You can NOT use your brain for all the positions, I solved all the previous one that I posted, Buty I could not solved this one and I am a 2200 rated player or was 18 years ago since I don't play active anymore :roll:

This position is a little bit more challenging for players less than 2300, I believe for this one you need an engine rated at least 2300 to find the best move.

White to play and win :!:

[d]3rq1k1/rb4p1/2R1npNp/3n4/3P4/p5BP/B4PPK/1RQ5 w - - 0 1
Last edited by pichy on Sat Mar 17, 2012 5:39 pm, edited 1 time in total.
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pichy
Posts: 2564
Joined: Thu Mar 09, 2006 3:04 am

Re: These positions are too easy for engines around 2500-260

Post by pichy »

This position is a little bit more challenging for players less than 2300, I believe for this one you need an engine rated at least 2300 to find the best move.

White to play and win :!:

[d]3rq1k1/rb4p1/2R1npNp/3n4/3P4/p5BP/B4PPK/1RQ5 w - - 0 1
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