Easy Engine Test

[rightrook]

[D]r4r1k/2q2ppp/1np1b3/p1b1pNB1/2B1P3/8/PPP1Q1PP/3R1R1K w - - 0 1

Most of the engines i tested find....Nxg7 in about 20 sec. or less...

but my Junior 5 just plays....Bxe6....

Stein----Portisch......game 1962

[Cubeman]

Sorry to sound dumb, but how does White win after Nxg7 Bxc4! Whereever the Queen goes either to g4 black can answer f5.And if Qh5 f6 is a good reply.Had Hiarcs 9 looking at it for quite a while after the Nxg7 and Bxc4 and it thought that white was slightly worse.I can't see that most engines think Nxg7 is the best move in under 20 seconds.But if you can enlighten me I would be very grateful.

[Marc MP]

Sorry to sound dumb, but how does White win after Nxg7 Bxc4! Whereever the Queen goes either to g4 black can answer f5.And if Qh5 f6 is a good reply.Had Hiarcs 9 looking at it for quite a while after the Nxg7 and Bxc4 and it thought that white was slightly worse.I can't see that most engines think Nxg7 is the best move in under 20 seconds.But if you can enlighten me I would be very grateful.

Hi,

Here is SlowChess hint!

SlowChess Blitz WV2.1 (190 MB hash), PIV 3.2
FEN: r4r1k/2q2ppp/1np1b3/p1b1pNB1/2B1P3/8/PPP1Q1PP/3R1R1K w - -

[12] 2.36 00:28.4 Nxg7 Be7 Nxe6 fxe6 Be3 Rxf1+ Rxf1 Nxc4 Qxc4 Qd6 Qc3 c5 Rf7 Rf8
[11] 2.24 00:16.2 Nxg7 Be7 Nxe6 fxe6 Bh6 Rxf1+ Rxf1 Nxc4 Qxc4 Qd6 Qc3 Rb8 b3
[10] 2.00 00:07.0 Nxg7 Bxc4 Bf6 Be7 Qf2 Bxf6 Qxf6 Nd5 exd5 Kg8
[10] 0.84 00:05.7 Nxg7 {++}
[10] 0.84 00:04.9 Bxe6 fxe6 Nh4 Rxf1+ Rxf1 Rf8 Rxf8+ Bxf8 b3 a4 Qf2 Bb4 c3 Ba3
[9] 0.76 00:01.6 Bxe6 fxe6 Nh4 Na4 Qc4 Bb4 Qxe6 Nxb2 Ng6+ hxg6 Qh3+ Kg8 Qb3+ Kh7 Qxb2
[8] 0.68 00:00.6 Bxe6 fxe6 Nh4 Na4 Qc4 Bb4 Qb3 Nc5
[7] 0.72 00:00.1 Bxe6 fxe6 Ne3 Be7 Bxe7 Qxe7 b3 a4
[6] 0.76 00:00.0 Bxe6 fxe6 Ne3 Be7 Bxe7 Qxe7 b3
[5] 0.72 00:00.0 Bxe6 fxe6 Ne3 Nd7 b3
[4] 0.64 00:00.0 Bxe6 fxe6 Ne3 Rab8
[3] 0.60 00:00.0 Bxe6 fxe6 Ne3
[2] 0.96 00:00.0 Bxe6 fxe6

[Cubeman]

Thanks Marc, I need to get better at these mating attacks.I was surprised that such a simple move like Bf6 was so hard to find.