Bf6..... Test This One Again....Now Playable

[rightrook]

[d]r1b1r1k1/p2q1ppp/np2n3/3p1NBQ/8/6PB/P4P1P/3RR1K1 w - - 0 1


Same position as before......but now with a white rook already at d1....



Fritz 8...... finds Bf6 in 46 seconds....

Compaq AMD 64 Athlon

See how your favorite engine performs on this...

regards

Robert

[rightrook]

Ruffian 1.0.5.........finds Bf6 in 86 seconds.....

[Guetti]

Hiarcs 11 4CPU finds Bf6 in 11s on a PowerPC G5 2.5Ghz.

Code: Select all

10 +103 186 1511675 Re5 Nb4 a3 Nc6 Rexd5 Qc7 Be3 Rf8 f3 Rd8 Nd6
11 +121 364 3218436 Re5 Nb4 a3 Nc6 Rexd5 Qc7 Be3 Rf8 Bg4 Rd8 Rxd8+
12 +96 955 9076447 Re5
12 -14 1066 10170040 Re5 Nac7 Nxg7 Nxg7 Bxd7 Nxh5 Bxe8 f6 Bxh5 fxe5 Bd8 Bg4 Bxc7 Bxh5
12 -14 1131 10782164 Bf6
12 +146 1347 12965013 Bf6
12 +257 2760 28801214 Bf6 Nac7 Qg4 g6 Nh6+ Kf8 Qb4+ Re7 f4 Na6 Bxe7+ Qxe7 Qxe7+ Kxe7 f5 gxf5 Nxf5+ Kf8 Rxd5
13 +282 3450 35788928 Bf6
13 +534 4395 45994052 Bf6 Nac7 Re4 dxe4 Rxd7 Bxd7 Nxg7 Nd4 Bxd4 Bxh3 Nxe8 Nxe8 Qxh3
14 +559 5900 62303801 Bf6
14 +732 7567 80862075 Bf6 g6 Qh6 Nac5 Rd4 Ne4 Rexe4 dxe4 Rxd7
15 +733 11618 125838752 Bf6 Nac7 Re4 dxe4 Rxd7 Bxd7 Nxg7 Nf8 Bxd7 Nxd7 Nf5
16 +758 14579 155354132 Bf6
16 +936 24110 262080341 Bf6 g6 Qh6 Nac5 Rd4 Ne4 Rexe4 dxe4 Rxd7

[Tord Romstad]

Glaurung (running on an iMac Core Duo 2 GHz), picks Bf6 after 10 seconds, but later claims that Nh6+ is even stronger:

Code: Select all

11     +0.25   00:05    6621k Qh4 Bb7 Bf6 Qc6 Nh6+ gxh6 Rxe6 Qc2 Rxe8+ Rxe8 
                              Qxh6 Qg6 Qh4 h6 
11     +0.92   00:07    9318k Re3 Qc7 Bf4 Qc6 Bd6 Bb7 Rf3 f6 Ne7+ Rxe7 Bxe7 
                              Nac5 
11     +1.29   00:10   13748k Bf6 g6 Nh6+ Kf8 Qe5 Qc7 Be7+ Kxe7 Qxd5 Kf8 Qxa8 
                              Qb7 Qxb7 Bxb7 Rd7 
12     +2.55   00:19   24821k Bf6 Nac7 Nh6+ Kf8 Be5 g6 Qf3 Ng5 Qa3+ Qe7 Bd6 
                              Nxh3+ Kg2 Nf4+ gxf4 Bh3+ Kxh3 
13     +2.98   00:23   29676k Bf6 Nac7 Nh6+ Kf8 Be5 g6 Qf3 Ng5 Qa3+ Qe7 Bd6 
                              Nxh3+ Kg2 Be6 Bxe7+ Rxe7 Rxe6 Nxe6 Kxh3 
14     +3.24   00:32   42233k Bf6 Nac7 Nh6+ Kf8 Be5 g6 Qf3 Ng5 Qf6 Nxh3+ Kg2 
                              Rxe5 Rxe5 Qe6 Qd8+ Kg7 Qg8+ Kf6 Rxe6+ Bxe6 Qxh7 
14     +5.06   01:11   94110k Nh6+ gxh6 Bf6 Qe7 Bxe7 Rxe7 Qxh6 Nac7 Bf5 f6 Kg2 
                              Rf7 Qh3 Re7 Kg1 
15     +5.88   01:22  109383k Nh6+ gxh6 Bf6 Qd8 Bxd8 Rxd8 Qxh6 Ng7 Re5 Bxh3 Rg5 
                              Kf8 Rxg7 Be6 Rxh7+ Ke8 Qf4 
16     +5.86   01:50  147132k Nh6+ gxh6 Bf6 Qd8 Bxd8 Rxd8 Qxh6 Ng7 Re5 Bxh3 Rg5 
                              Kf8 Rxg7 Be6 Qg5 Ke8 Rxh7 
17     +5.78   03:15  261493k Nh6+ gxh6 Bf6 Qd8 Bxd8 Rxd8 Qxh6 Ng7 Re5 Bxh3 Rg5 
                              Kf8 Rxg7 Be6 Rxh7+ Ke8 Re1 Nc5 Rh8+ Ke7 

Tord

[Guetti]

Hi Tord,

Which Mac GUI do you use to get this nice output?

[Tord Romstad]

Hi Tord,

Which Mac GUI do you use to get this nice output?

Hello Andreas,

Unfortunately, I have no GUI which can be used to get such output. The output was copied from my engine's log file (which is activated by setting the UCI parameter "Use search log" to "true"). I plan to make it possible to produce similar output from my GUI in the next version, though.

Tord

[Ron Murawski]

Code: Select all

 14	+3.73	1220.5M	42:48.54  Nh6+ Kf8 Bf4 Re7 Qf5 Nxf4 Qc2 gxh6 Bxd7 Rxe1+ Rxe1 Bxd7 gxf4 f5 Re5
 14	+3.73	1143.1M	40:08.21  Nh6+!
 13	+3.38	 301.1M	9:55.17	Nh6+ Kf8 Nf5 Kg8 <HT>
 12	+3.38	 169.9M	5:39.17	Nh6+ Kf8 Bf4 Re7 Nf5 Kg8 Nxe7+ Qxe7 Rxd5 Nb4 Bxe6 Bxe6 Rb5 Qf8
 12	+3.23	 122.1M	4:09.42	Nh6+!
 11	+2.88	 103.2M	3:33.33	Nh6+ gxh6 Bf6 Qa4 Qxh6 Qxd1 Rxd1 Ng7
 11	+0.76	  94.0M	3:14.33	Nh6+!
 11	+0.19	  60.2M	2:04.30	Qh4 Bb7 Ne7+ Rxe7 Bxe7 Re8 Ba3 Nac5 f3 Qd8 Qxd8

After a long think Horizon prefers Nh6+

Ron

[rightrook]

Yes, you are correct...

Nh6+ also seems to win..!

Thanks!

Robert