Author: Jon Dart
Date: 20:39:29 12/11/00
Go up one level in this thread
On December 11, 2000 at 15:28:12, Peter Berger wrote:
>>
>arasan.24 is incorrect: ...a6 loses to h6! (+7.50 at ply 13 )
As noted in your followup, the solution given is .. Kg7.
>arasan.25 : solved
>arasan.37 : solved
>arasan.68 : solved
>arasan.80 seems to be incorrect, too: ...Qc8 loses to Qc4! or Bxh6! (
>+2.38/+2.34 at ply 12)
So it does but the solution is ..Qf7.
>arasan.82 : solved
>arasan.85 : solved
>arasan.87 : solved
>arasan.88 is dubious : ..Bxf3 is just as good as ...Nxf2 in Fritz' and my humble
>opinion (same idea)
I'm not sure about this. If I force Crafty to search only Bxf3, I get:
7 0.39 -0.76 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Be4 Rd8
7-> 0.39 -0.76 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Be4 Rd8
8 0.89 ++ 1. ... Bxf3!!
8 1.89 -0.24 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Rd1 Qb7+ 5. Kg1 Bxe5
8-> 1.89 -0.24 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Rd1 Qb7+ 5. Kg1 Bxe5
9 3.48 -0.16 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Be4 Ra7 5. Qc4 Nxe5
9-> 3.48 -0.16 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Be4 Ra7 5. Qc4 Nxe5
10 6.64 -0.40 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Rd1 Bxf2 5. Qe4 Ra7 6. Qf4
10-> 6.64 -0.40 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Rd1 Bxf2 5. Qe4 Ra7 6. Qf4
11 14.81 -0.68 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Be4 Rd8 5. Bg5 f6 6. exf6 gxf6 7.
Bc1 Bxb2 8. Bxb2 Qxb2 9. Qxa6
11-> 14.81 -0.68 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Be4 Rd8 5. Bg5 f6 6. exf6 gxf6 7.
Bc1 Bxb2 8. Bxb2 Qxb2 9. Qxa6
12 40.76 -0.46 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Be4 Rd8 5. Rd1 Bxe5 6. Bc6 Qa7 7.
Qe4
12-> 40.76 -0.46 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Be4 Rd8 5. Rd1 Bxe5 6. Bc6 Qa7 7.
Qe4
13 2:07 -0.51 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Rd1 Bxe5 5. Be2 Rd8 6. Qxa6 Qxa6
7. Bxa6 O-O 8. Bg5
13-> 2:07 -0.51 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Rd1 Bxe5 5. Be2 Rd8 6. Qxa6 Qxa6
7. Bxa6 O-O 8. Bg5
14 6:17 -0.48 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Rd1 Bxe5 5. Be2 Rd8 6. Qxa6 Qxa6
7. Bxa6 O-O 8. Bb5 Nc5 9. Rxd8 Rxd8
14-> 6:17 -0.48 1. ... Bxf3 2. hxg4 Bxg2 3. Kxg2 Bxd4
4. Rd1 Bxe5 5. Be2 Rd8 6. Qxa6 Qxa6
7. Bxa6 O-O 8. Bb5 Nc5 9. Rxd8 Rxd8
15 9:31 -- 1. ... Bxf3
time=20:00 cpu=99% mat=-1 n=409221838 fh=90% nps=340938
ext-> checks=12586325 recaps=908527 pawns=54890 1rep=641587
thrt:31337
predicted=0 nodes=409221838 evals=95521778
endgame tablebase-> probes done=0 successful=0
SMP-> split=0 stop=0 data=0/64 cpu=20:00 elap=20:00
It's failing low but didn't complete ply 15 so I'm not sure how bad it is.
Nxg2 looks better.
>arasan.92 : solved ( I think this is the most difficult one ! )
>arasan.131: solved (very difficult, too !)
>arasan.143: solved (another great one :-) ! )
>arasan.150: solved
>arasan2.11: typo in FEN string , Rb8 is correct ( solved by both Crafty and
>Fritz )
>arasan2.14 : ...Ke3 looks best but seems to lose,too :2.Bc8 g3 3.hxg3
> hxg3 4.Kf1 Ke4! 5.Bb7+!; both Crafty and Fritz don't do too well
>here , Crafty being
> the better one .
I think Black can't save this but it still may be a good test as it is
interesting to see how long a program takes to reject g3.
--Jon
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