Author: Tord Romstad
Date: 07:53:52 12/11/03
Go up one level in this thread
On December 11, 2003 at 10:24:07, martin fierz wrote:
>On December 11, 2003 at 09:04:42, Uri Blass wrote:
>
>>On December 11, 2003 at 08:29:15, Claude Le Page wrote:
>>
>>>I submitted to some engines a line that is known since 400 years:
>>>1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 d5 5 exd5
>>>I was surprised to see that most of them answer 5...Nxd5 whereas it is known
>>>since Polerio that this move is bad after 6 Nxf7 or d4 exd4 7 O-O
>>>of the CB native engines , only shredder7 , junior7 ,and junior8 pass the
>>>test (they play Na5 , Nd4 or b5 that are the "regular" answers ),and that a
>>>"modern" engine as Hiarcs9 behaves like the obsolete ones
>>>if these engines (out of book!) behave like this , what confidence can one have
>>>in analyses by such engines ?
>>>Friendly Yours
>>>Claude Le Page
>>
>>
>>how much time did you give the engines?
>>
>>I remember that I read that it is not clear if Nxf7 is good for white and in a
>>correspondence game black found a good defence.
>
>i also remember that according to theory Nxf7 is not so clear. lots of fun
>though of course :-) IIRC then there is a better move than Nxf7, but i don't
>remember whether it's the line given by claude.
The last time I heard any news about this line, even 5. d4 was not considered
clear. In modern opening theory, the move 4... Nxd5!? is regarded as
extremely risky and perhaps a bit dubious, but it remains playable and
unrefuted (unless a refutation has been found during the last few years).
Below is Gothmog's analysis of the position after 4. exd5, followed by
its analysis after 4... Nxd5 (it likes 5. Nxf7, of course):
1 0.95 0.00 40 Nxd5
2 0.39 0.01 1199 Nxd5 Qf3
3 0.30 0.02 2702 Nxd5 Qf3 Qxg5 Bxd5
4 0.22 0.15 13847 Nxd5 Nc3 Qxg5 Bxd5
5 0.02 0.52 63356 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3
6 >= 0.02 0.55 66189 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4
6 >= 0.03 0.56 66359 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4
6 <= 0.08 0.97 126720 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4
6 <= 0.06 0.99 128982 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4
6 <= 0.03 1.02 135318 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4
6 0.03 1.03 135318 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4
7 <= 0.02 2.22 325085 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 O-O
7 <= 0.00 2.33 344119 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 O-O
7 <= -0.03 2.53 378890 Nxd5 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 O-O
7 >= -0.09 2.94 449876 b5 Bxb5 Qxd5 Bxc6+ Qxc6 Qf3 Qxf3 Nxf3
7 >= -0.08 2.95 451692 b5 Bxb5 Qxd5 Bxc6+ Qxc6 Qf3 Qxf3 Nxf3
7 >= -0.03 2.99 457054 b5 Bxb5 Qxd5 Bxc6+ Qxc6 Qf3 Qxf3 Nxf3
7 -0.03 3.00 457054 b5 Bxb5 Qxd5 Bxc6+ Qxc6 Qf3 Qxf3 Nxf3
8 <= -0.05 6.02 932899 b5 Bxb5 Qxd5 Qe2 Bd6 O-O e4 Nc3
8 <= -0.06 6.19 973458 b5 Bxb5 Qxd5 Qe2 Bd6 Qc4 Bd7 Nc3
8 <= -0.09 6.43 1027376 b5 Bxb5 Qxd5 Qe2 Bd6 Qc4 Bd7 Nc3
8 <= -0.17 8.00 1295873 b5 Bxb5 Qxd5 Qe2 Bd6 Qc4 Bd7 Nc3
8 <= -0.33 10.03 1647700 b5 dxc6 bxc4 Nc3 h6 Nf3 Bg4 d3
8 >= -0.58 10.25 1683385 b5 dxc6 bxc4 Nc3 h6 Nf3 Bg4 d3
8 >= -0.56 10.26 1683910 b5 dxc6 bxc4 Nc3 h6 Nf3 Bg4 d3
8 >= -0.50 10.29 1688706 b5 dxc6 bxc4 Nc3 h6 Nf3 Bg4 d3
8 >= -0.36 10.36 1700711 b5 dxc6 bxc4 Nc3 Ng4 d3 cxd3 Qxd3 Qd4
Qxd4 exd4
8 <= -0.34 10.52 1736618 b5 dxc6 bxc4 Nc3 Ng4 d3 cxd3 Qxd3 Qd4
Qxd4 exd4
8 <= -0.36 10.70 1778236 b5 dxc6 bxc4 Nc3 Ng4 d3 cxd3 Qxd3 Qd4
Qxd4 exd4
8 -0.36 10.72 1778236 b5 dxc6 bxc4 Nc3 Ng4 d3 cxd3 Qxd3 Qd4
Qxd4 exd4
9 >= -0.36 12.06 1998548 b5 dxc6 bxc4 Nc3 Ng4 d3 Be7 Nge4 Be6
9 >= -0.34 12.11 2008843 b5 dxc6 bxc4 Nc3 Ng4 d3 Be7 Nge4 Be6
9 >= -0.28 13.76 2256421 Nxd5 Qh5 g6 Qf3 Qxg5 Bxd5 Nd8 Nc3 Bb4
9 >= -0.14 14.58 2392552 Nxd5 Qh5 g6 Qf3 Qxg5 Bxd5 Nd8 Nc3 Bg4
9 <= 0.09 20.73 3227322 Nxd5 Qh5 g6 Qf3 Qxg5 Bxd5 Nd8 Nc3 Bg4
9 >= 0.09 24.16 3679698 Nxd5 Qh5 g6 Qf3 Qxg5 Bxd5 Nd8 Nc3 Bc5
9 0.09 24.19 3679698 Nxd5 Qh5 g6 Qf3 Qxg5 Bxd5 Nd8 Nc3 Bc5
10 <= 0.08 43.96 6670228 Nxd5 Qh5 g6 Qf3 Qxg5 Bxd5 Nd8 Nc3 Bc5 d3
10 <= 0.06 44.99 6902051 Nxd5 Qh5 g6 Qf3 Qxg5 Bxd5 Nd8 Nc3 Bc5 d3
10 <= 0.03 47.68 7342380 Nxd5 Qh5 g6 Qf3 Qxg5 Bxd5 Nd8 Nc3 Bc5 d3
10 <= -0.05 52.45 8205923 Nxd5 Qh5 g6 Qf3 Qxg5 Bxd5 Nd8 Nc3 Bc5 d3
10 <= -0.20 1:03 10074831 Nxd5 Qh5 g6 Qf3 Qxg5 Bxd5 Nd8 Nc3 Bc5 d4
10 >= -0.45 1:06 10572916 b5 Bf1 Bg4 f3 Nxd5 d4 exd4 fxg4 Bb4+ c3
Qe7+ Qe2
10 >= -0.44 1:06 10599854 b5 Bf1 Bg4 f3 Nxd5 d4 exd4 fxg4 Bb4+ c3
Qe7+ Qe2
10 >= -0.38 1:07 10817306 b5 Bf1 Nd4 c3 Nxd5 Nxf7 Kxf7 cxd4 exd4
10 <= -0.25 1:13 11817127 b5 Bf1 Nd4 c3 Nxd5 Nxf7 Kxf7 cxd4 exd4
10 <= -0.27 1:16 12362604 b5 Bf1 Nd4 c3 Nxd5 Nxf7 Kxf7 cxd4 exd4
10 <= -0.30 1:20 13098388 b5 Bf1 Nd4 c3 Nxd5 Nxf7 Kxf7 cxd4 exd4
Qf3+
10 >= -0.36 1:20 13148790 b5 Bf1 Nd4 c3 Nxd5 Nxf7 Kxf7 cxd4 exd4
Qf3+
10 >= -0.34 1:20 13192732 b5 Bf1 Nd4 c3 Nxd5 Nxf7 Kxf7 cxd4 exd4
Qf3+
10 <= -0.31 1:23 13665198 b5 Bf1 Nd4 c3 Nxd5 Nxf7 Kxf7 cxd4 exd4
Qf3+
10 <= -0.33 1:24 13990552 b5 Bf1 Nd4 c3 Nxd5 Nxf7 Kxf7 cxd4 exd4
Qf3+
10 >= -0.33 1:24 14046539 b5 Bf1 Nd4 c3 Nxd5 Nxf7 Kxf7 cxd4 exd4
Qf3+
10 -0.33 1:24 14046539 b5 Bf1 Nd4 c3 Nxd5 Nxf7 Kxf7 cxd4 exd4
Qf3+
11 <= -0.34 2:43 26711061 b5 Bf1 Nd4 c3 Nxd5 h4 Bg4 Bxb5+ Nxb5
11 >= -0.34 3:14 31581388 Na5 d3 c6 Qe2 Nxc4 dxc4 cxd5 Qxe5+ Qe7
Qxe7+ Bxe7
11 -0.34 3:14 31581388 Na5 d3 c6 Qe2 Nxc4 dxc4 cxd5 Qxe5+ Qe7
Qxe7+ Bxe7
1 -0.39 0.00 242 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
2 -0.30 0.01 1191 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
3 -0.22 0.03 2416 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
4 -0.02 0.05 3960 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
5 -0.03 0.10 10082 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
6 >= -0.02 0.12 12982 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
6 >= 0.02 0.13 13143 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
6 >= 0.09 0.14 13256 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
6 >= 0.23 0.15 13682 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
6 <= 0.47 0.22 23196 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
6 <= 0.45 0.24 24283 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
6 <= 0.42 0.25 25272 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
6 <= 0.34 0.27 27124 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
6 <= 0.23 0.28 28982 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
6 0.23 0.29 28982 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 >= 0.23 0.62 77703 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 >= 0.25 0.63 79461 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 >= 0.31 0.66 84385 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 >= 0.45 0.71 93675 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 <= 0.69 0.79 104759 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 <= 0.67 0.80 105499 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 <= 0.64 0.81 106475 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 <= 0.56 0.83 108195 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 >= 0.47 1.18 162798 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 >= 0.48 1.21 165886 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 <= 0.53 1.22 167031 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 <= 0.52 1.23 167688 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 <= 0.48 1.25 169019 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
7 0.48 1.26 169019 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 <= 0.47 1.61 227206 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 <= 0.45 1.63 230352 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 <= 0.42 1.66 235695 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 <= 0.34 1.73 248190 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 <= 0.19 1.99 294584 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 <= -0.08 3.44 530530 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 >= -0.45 3.52 543708 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 >= -0.42 3.54 544428 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 >= -0.34 3.55 545377 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 >= -0.20 3.57 548181 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 <= -0.09 3.62 556928 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 >= -0.09 4.03 622343 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
8 -0.09 4.04 622343 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
9 >= -0.09 4.22 648674 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
9 >= -0.08 4.23 649748 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
9 >= -0.02 4.25 654195 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
9 >= 0.12 4.32 665947 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
9 >= 0.38 4.40 680410 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
9 <= 0.75 5.26 823600 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
9 <= 0.73 5.38 843802 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
9 <= 0.70 5.45 856882 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
9 >= 0.64 5.55 873148 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
9 >= 0.66 5.58 876052 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
9 >= 0.70 5.62 883373 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
9 0.70 5.64 883373 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 <= 0.69 9.72 1551800 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 <= 0.67 9.94 1594996 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 <= 0.64 10.14 1640389 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 <= 0.56 10.73 1754070 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 >= 0.42 11.31 1845949 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 >= 0.44 11.35 1852451 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 >= 0.50 11.51 1879166 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 <= 0.55 11.65 1911269 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 <= 0.53 11.77 1940448 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 >= 0.52 11.81 1944795 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 <= 0.52 12.16 2012184 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
10 0.52 12.18 2012184 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
11 >= 0.52 14.23 2359778 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
11 >= 0.53 14.44 2398181 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Qd6 c3
11 <= 0.58 21.01 3489480 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Bb4+ c3 Rf8 Qg4+ Kf7 Qh5+
11 <= 0.56 24.19 4030245 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Bb4+ c3 Rf8 Qg4+ Kf7 Qh5+
11 >= 0.55 24.41 4071158 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Bb4+ c3 Rf8 Qg4+ Kf7 Qh5+
11 >= 0.56 24.66 4121709 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Bb4+ c3 Rf8 Qg4+ Kf7 Qh5+
11 0.56 24.68 4121709 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Bb4+ c3 Rf8 Qg4+ Kf7 Qh5+
12 >= 0.56 30.92 5166471 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Bb4+ c3 Rf8 Qg4+ Kf7 Qh5+
12 <= 0.56 1:14 11936354 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Bb4+
12 0.56 1:14 11936354 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Bb4+
13 >= 0.56 1:30 14227320 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Bb4+ c3
13 >= 0.58 1:35 15039975 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Bb4+ c3
13 >= 0.64 1:42 16336907 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
Bb4+ c3
13 <= 0.77 3:15 29668595 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
c6 dxe5 Qc7 Bf4
13 <= 0.75 3:37 33493992 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
c6 dxe5 Qc7 Bf4
13 <= 0.72 4:17 40356539 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
c6 dxe5 Qc7 Bf4
13 >= 0.66 4:23 41344601 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
c6 dxe5 Qc7 Bf4
13 >= 0.67 4:25 41765351 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
c6 dxe5 Qc7 Bf4
13 <= 0.70 4:52 46384415 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
c6 dxe5 Qc7 Bf4
13 <= 0.69 5:12 50006493 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
c6 dxe5 Qc7 Bf4
13 >= 0.69 5:19 51206125 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
c6 dxe5 Qc7 Bf4
13 0.69 5:19 51206125 Nxf7 Kxf7 Qf3+ Ke6 Nc3 Nb4 Nxd5 Nxd5 d4
c6 dxe5 Qc7 Bf4
Tord
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