Compare your engine's performance

Discussion of chess software programming and technical issues.

Moderator: Ras

Chessnut1071
Posts: 313
Joined: Tue Aug 03, 2021 2:41 pm
Full name: Bill Beame

Re: Compare your engine's performance

Post by Chessnut1071 »

Chessnut1071 wrote: ↑Wed Aug 18, 2021 3:59 am
Chessnut1071 wrote: ↑Wed Aug 18, 2021 2:57 am
amanjpro wrote: ↑Wed Aug 18, 2021 2:37 am OK, your fen was very wrong, white is in check, and white still has castling right, which confused my engine to death, here is probably the correct fen:

[d]5k2/ppp2r1p/2p2ppP/8/2Q5/2P1bN2/PP4P1/1K1R4 w - - 0 1

Stockfish finds mate in 9 instantly, and took some more time to find mate in 7, Zahak needed to reach depth 28 to find mate in 7:



what about 4. Rf6. This should stop the forced 7 move mate if Ne5. The listed move 4 Nd4

Code: Select all

info depth 28 seldepth 15 hashfull 779 nodes 113354684 nps 1115465 score mate +7 time 101620 pv c4e6 e3h6 d1d8 f8g7 f3e5 f6e5 e6e5 f7f6 d8d7 g7g8 e5f6 b7b5 f6f7 g8h8 f7h7
I think that's 8-move checkmate, i.e., 15 moves. 3. Ne5 yields 7-move mate. Solution: 1 Qe4, Bxh6, 2 Rd8+, Kg7, 3 Nd4 Bf4, 4 Ne6+ Kh6, 5 Rd1 Pc5, 6 Rh1+ Bh2 7 Rxh2 #

thanks: sorry about the mistakes, I rushed it too fast I guess: 1. Qe4 ..... starts the forced 7-move mate,
Chessnut1071 wrote: ↑Wed Aug 18, 2021 2:25 am
FEN:
5k2/ppp2r1p/2p2ppP/8/2Q5/2P1bN2/pp4p1/1K1R4
Even this fen above is wrong, Please use the FEN tag to render it so you see what you are posting, are you sure this is the position, cant you see white is in check, and it is black's move (or at least that is what assumed):

[d]5k2/ppp2r1p/2p2ppP/8/2Q5/2P1bN2/pp4p1/1K1R4
Top
JVMerlino
Posts: 1404
Joined: Wed Mar 08, 2006 10:15 pm
Location: San Francisco, California

Re: Compare your engine's performance

Post by JVMerlino »

Well, ok, on the assumption that this is the actual position:

[d]5k2/ppp2r1p/2p2ppP/8/2Q5/2P1bN2/PP4P1/1K1R4 w - - 0 1

The King finds Mate in 7 in less than a second.

Code: Select all

Time	Depth	Score	Positions	Moves
0:00	1/3	13.99	4781		1.Rd8+ Ke7 2.Rd7+ Kxd7 3.Qxf7+
					Kd6 4.Qxf6+ Kc5 5.Qe5+ Kb6 6.Qxe3+
					c5
0:00	1/4	17.01	28884		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Qxc7+ Kd5 9.Nxh7
0:00	1/5	18.32	95220		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Re8+ Kf4 9.Ne6+ Kg3 10.Qg5+
					Kh2 11.Nxc5
0:00	1/5	Mate08	112202		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/6	Mate08	148296		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/7	Mate08	304400		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate08	692755		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate07	1278179		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:00	2/9	Mate07	1399236		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:01	3/10	Mate07	3639655		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:04	4/11	Mate07	10290529	1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
Top
Chessnut1071
Posts: 313
Joined: Tue Aug 03, 2021 2:41 pm
Full name: Bill Beame

Re: Compare your engine's performance

Post by Chessnut1071 »

JVMerlino wrote: ↑Wed Aug 18, 2021 5:53 am Well, ok, on the assumption that this is the actual position:

[d]5k2/ppp2r1p/2p2ppP/8/2Q5/2P1bN2/PP4P1/1K1R4 w - - 0 1

The King finds Mate in 7 in less than a second.

Code: Select all

Time	Depth	Score	Positions	Moves
0:00	1/3	13.99	4781		1.Rd8+ Ke7 2.Rd7+ Kxd7 3.Qxf7+
					Kd6 4.Qxf6+ Kc5 5.Qe5+ Kb6 6.Qxe3+
					c5
0:00	1/4	17.01	28884		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Qxc7+ Kd5 9.Nxh7
0:00	1/5	18.32	95220		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Re8+ Kf4 9.Ne6+ Kg3 10.Qg5+
					Kh2 11.Nxc5
0:00	1/5	Mate08	112202		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/6	Mate08	148296		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/7	Mate08	304400		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate08	692755		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate07	1278179		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:00	2/9	Mate07	1399236		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:01	3/10	Mate07	3639655		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:04	4/11	Mate07	10290529	1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
Soory, but King needs to go back to the drawling boards 1 Qe4 Bxh6!
Top
amanjpro
Posts: 883
Joined: Sat Mar 13, 2021 1:47 am
Full name: Amanj Sherwany

Re: Compare your engine's performance

Post by amanjpro »

Chessnut1071 wrote: ↑Wed Aug 18, 2021 6:05 am
JVMerlino wrote: ↑Wed Aug 18, 2021 5:53 am Well, ok, on the assumption that this is the actual position:

[d]5k2/ppp2r1p/2p2ppP/8/2Q5/2P1bN2/PP4P1/1K1R4 w - - 0 1

The King finds Mate in 7 in less than a second.

Code: Select all

Time	Depth	Score	Positions	Moves
0:00	1/3	13.99	4781		1.Rd8+ Ke7 2.Rd7+ Kxd7 3.Qxf7+
					Kd6 4.Qxf6+ Kc5 5.Qe5+ Kb6 6.Qxe3+
					c5
0:00	1/4	17.01	28884		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Qxc7+ Kd5 9.Nxh7
0:00	1/5	18.32	95220		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Re8+ Kf4 9.Ne6+ Kg3 10.Qg5+
					Kh2 11.Nxc5
0:00	1/5	Mate08	112202		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/6	Mate08	148296		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/7	Mate08	304400		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate08	692755		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate07	1278179		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:00	2/9	Mate07	1399236		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:01	3/10	Mate07	3639655		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:04	4/11	Mate07	10290529	1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
Soory, but King needs to go back to the drawling boards 1 Qe4 Bxh6!
Why do you think B×h6 is stronger than Bd2? They both delay the mate by the same exact amount...and that is what matters
Top
Chessnut1071
Posts: 313
Joined: Tue Aug 03, 2021 2:41 pm
Full name: Bill Beame

Re: Compare your engine's performance

Post by Chessnut1071 »

amanjpro wrote: ↑Wed Aug 18, 2021 6:08 am
Chessnut1071 wrote: ↑Wed Aug 18, 2021 6:05 am
JVMerlino wrote: ↑Wed Aug 18, 2021 5:53 am Well, ok, on the assumption that this is the actual position:

[d]5k2/ppp2r1p/2p2ppP/8/2Q5/2P1bN2/PP4P1/1K1R4 w - - 0 1

The King finds Mate in 7 in less than a second.

Code: Select all

Time	Depth	Score	Positions	Moves
0:00	1/3	13.99	4781		1.Rd8+ Ke7 2.Rd7+ Kxd7 3.Qxf7+
					Kd6 4.Qxf6+ Kc5 5.Qe5+ Kb6 6.Qxe3+
					c5
0:00	1/4	17.01	28884		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Qxc7+ Kd5 9.Nxh7
0:00	1/5	18.32	95220		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Re8+ Kf4 9.Ne6+ Kg3 10.Qg5+
					Kh2 11.Nxc5
0:00	1/5	Mate08	112202		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/6	Mate08	148296		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/7	Mate08	304400		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate08	692755		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate07	1278179		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:00	2/9	Mate07	1399236		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:01	3/10	Mate07	3639655		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:04	4/11	Mate07	10290529	1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
Soory, but King needs to go back to the drawling boards 1 Qe4 Bxh6!
Why do you think B×h6 is stronger than Bd2? They both delay the mate by the same exact amount...and that is what matters
if 1 .... Bd2 black can be mated before 7
Top
JVMerlino
Posts: 1404
Joined: Wed Mar 08, 2006 10:15 pm
Location: San Francisco, California

Re: Compare your engine's performance

Post by JVMerlino »

Chessnut1071 wrote: ↑Wed Aug 18, 2021 6:15 am
amanjpro wrote: ↑Wed Aug 18, 2021 6:08 am
Chessnut1071 wrote: ↑Wed Aug 18, 2021 6:05 am
JVMerlino wrote: ↑Wed Aug 18, 2021 5:53 am Well, ok, on the assumption that this is the actual position:

[d]5k2/ppp2r1p/2p2ppP/8/2Q5/2P1bN2/PP4P1/1K1R4 w - - 0 1

The King finds Mate in 7 in less than a second.

Code: Select all

Time	Depth	Score	Positions	Moves
0:00	1/3	13.99	4781		1.Rd8+ Ke7 2.Rd7+ Kxd7 3.Qxf7+
					Kd6 4.Qxf6+ Kc5 5.Qe5+ Kb6 6.Qxe3+
					c5
0:00	1/4	17.01	28884		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Qxc7+ Kd5 9.Nxh7
0:00	1/5	18.32	95220		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Re8+ Kf4 9.Ne6+ Kg3 10.Qg5+
					Kh2 11.Nxc5
0:00	1/5	Mate08	112202		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/6	Mate08	148296		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/7	Mate08	304400		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate08	692755		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate07	1278179		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:00	2/9	Mate07	1399236		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:01	3/10	Mate07	3639655		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:04	4/11	Mate07	10290529	1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
Soory, but King needs to go back to the drawling boards 1 Qe4 Bxh6!
Why do you think B×h6 is stronger than Bd2? They both delay the mate by the same exact amount...and that is what matters
if 1 .... Bd2 black can be mated before 7
You're absolutely wrong. 1...Bd2 and 1...Bxh6 are identical.
Top
Chessnut1071
Posts: 313
Joined: Tue Aug 03, 2021 2:41 pm
Full name: Bill Beame

Re: Compare your engine's performance

Post by Chessnut1071 »

JVMerlino wrote: ↑Wed Aug 18, 2021 6:37 am
Chessnut1071 wrote: ↑Wed Aug 18, 2021 6:15 am
amanjpro wrote: ↑Wed Aug 18, 2021 6:08 am
Chessnut1071 wrote: ↑Wed Aug 18, 2021 6:05 am
JVMerlino wrote: ↑Wed Aug 18, 2021 5:53 am Well, ok, on the assumption that this is the actual position:

[d]5k2/ppp2r1p/2p2ppP/8/2Q5/2P1bN2/PP4P1/1K1R4 w - - 0 1

The King finds Mate in 7 in less than a second.

Code: Select all

Time	Depth	Score	Positions	Moves
0:00	1/3	13.99	4781		1.Rd8+ Ke7 2.Rd7+ Kxd7 3.Qxf7+
					Kd6 4.Qxf6+ Kc5 5.Qe5+ Kb6 6.Qxe3+
					c5
0:00	1/4	17.01	28884		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Qxc7+ Kd5 9.Nxh7
0:00	1/5	18.32	95220		1.Rd8+ Ke7 2.Qd3 f5 3.Rg8 Bc5 4.Qd8+
					Ke6 5.Ng5+ Ke5 6.Nxf7+ Ke6 7.Ng5+
					Ke5 8.Re8+ Kf4 9.Ne6+ Kg3 10.Qg5+
					Kh2 11.Nxc5
0:00	1/5	Mate08	112202		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/6	Mate08	148296		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/7	Mate08	304400		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate08	692755		1.Qe6 Bxh6 2.Rd8+ Kg7 3.Ne5 fxe5
					4.Qxe5+ Rf6 5.Rd7+ Kg8 6.Qxf6 c5
					7.Qf7+ Kh8 8.Qxh7#
0:00	1/8	Mate07	1278179		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:00	2/9	Mate07	1399236		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:01	3/10	Mate07	3639655		1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
0:04	4/11	Mate07	10290529	1.Qe4 Bd2 2.Rxd2 Re7 3.Rd8+ Kf7
					4.Qc4+ Re6 5.Rd7+ Kf8 6.Qxe6 f5
					7.Qf7#
Soory, but King needs to go back to the drawling boards 1 Qe4 Bxh6!
Why do you think B×h6 is stronger than Bd2? They both delay the mate by the same exact amount...and that is what matters
if 1 .... Bd2 black can be mated before 7
You're absolutely wrong. 1...Bd2 and 1...Bxh6 are identical.
You're right, I got 7 on Bd2 as well. I thought it was in my 6 list.
Top

Return to “Computer Chess Club: Programming and Technical Discussions”