Stockfish 8 SSE (Special Edition)

[MikeB]

Hi Mike

Thank you for these stockfish versions. I don't belong to a chess club , hence I play short games on line and longer games against computers.

So I appreciate weakened, handicapped programs.

Thank you for the ratings ladder and throttle options which I find very useful.

I was just wondering for any future versions if there could be an option for ladder ratings and throttle functions to not play instantaneously . Just like playing against a human.

I know the skill levels play with a natural delay but I think a more realistic game on hadicap levels is gotten from a program on full strength but with a reduced time for 'thinking' rather than having a program purposely picking a sub optimal move?

So throttle functions and ladder ratings but with a normal response delay may be a good option to better simulate a chess game if needed?

Just a thought
Thanks

I think that can pretty easily implemented, years ago, I had it in crafty se. I understand it completely why you would want that - I also prefer the shortened time allowed to think as opposed to deliberately picking sub optimal moves as well. I will soon have a Stockfish Crazy House version with the "ladder feature" as well. It will be a separate engine for now.

As promised , we have the latest Stockfish 8 sse with the "Ladder" and the new "Ladder Delay" uci options as well as the variant playing Stockfish 8 version with the same Ladder options.

Official Stockfish Github page: https://github.com/official-stockfish/Stockfish

MB's Github Page with Source and macOS exe: https://github.com/MichaelB7

Stockfish-8sse111916 mac OS exe: https://github.com/MichaelB7/Stockfish/ ... _macOS.zip

Stockfish-8-with Crazy House and others variants - Source and Mac Exe https://github.com/MichaelB7/Stockfish/ ... yHouse.zip (includes Ladder and Ladder Delay)

Make sure you have the latest uci2wb (Source and macOS exe):
https://github.com/MichaelB7/Stockfish/ ... 7c084c.zip

This the xBoard.conf settings that works for the variant playing Stockfish for me to play crazyhouse under xBoard on mac OS. xboard version 4.9.1 is highly recommended for variant play.

Code: Select all

-fcp "/Users/michaelbyrne/cluster.mfb/stockfish-8-CH" -fd "/Users/michaelbyrne/cluster.mfb" -fUCCI -variant crazyhouse  -firstFeatures variants="crazyhouse" 

Summary:
"Ladder Delay" is a sleep function used in conjunction with the uci option "Ladder". Ladder reduces the number of positions for human play. "Ladder Delay" wait will force Stockfish to "sleep" until the normal time control for the time control which was selected is met. It's a non busy sleep and will not use your CPU while Stockfish is sleeping. The ladder settings allows Stockfish to play at a range estimated ELO from 1200 to 2600. It slowly increments the number of positions Stock\fish will see, the positions increase every 25 ELO roughly 19% , effectively doubling the nodes for 100 ELO. If one starts at the bottom of the ladder, Sf would play at a near 1200 level. At Ladder level 1250, , it will look at ~ 19% more positions. Level 1300. would see double the positions. There are 57 different playing levels , starting with 1200, 1225 1250 etc., ...all the way up to 2600.

The Ladder Delay function also works as toggle,when it's your move, you can toggle the delay off or on, so if you think the move is an obvious recapture, you can toggle it off and on the next turn, toggle it back on.

With Ladder setting 1200 and skill level set to 3, you can get a very weakened Crazy House Stockfish - ideal for those new to Crazy House

Code: Select all

[Event "Computer Chess Game"]
[Site "Mac-Pro.local"]
[Date "2016.11.19"]
[Round "-"]
[White "michaelbyrne"]
[Black "Stockfish 8 Crazy House 64 POPCNT (UCI2WB)"]
[Result "1-0"]
[TimeControl "300+5"]
[Variant "crazyhouse"]

1. e4 d6 {+0.11/1} 2. d4 d5 {-0.50/1} 3. e5 Nc6 {-0.81/1} 4. f4 a6
{+0.04/1 0.1} 5. Nf3 e6 {-0.42/1} 6. Bd3 Nge7 {-0.27/1 13} 7. O-O Nf5
{-0.92/1 13} 8. c3 Bd7 {-1.24/1 13} 9. Bxf5 exf5 {-0.93/1 13} 10. Ng5 B@b5
{-0.60/1 13} 11. Nxf7 Kxf7 {+0.51/1 13} 12. N@g5+ Qxg5 {-0.36/1 13} 13.
fxg5 Bxf1 {-0.36/1 13} 14. Qh5+ g6 {+3.65/1 13} 15. Q@f6+ Kg8
{-1000.01/2 13} 16. P@f7#
{Black resigns} 1-0

[Rowen]

Thank you for doing this, much appreciated. All I need now is some kind soul to compile a Windows version , also a 32 bit if possible.

Thanks

[MikeB]

Hi Mike

Thank you for these stockfish versions. I don't belong to a chess club , hence I play short games on line and longer games against computers.

So I appreciate weakened, handicapped programs.

Thank you for the ratings ladder and throttle options which I find very useful.

I was just wondering for any future versions if there could be an option for ladder ratings and throttle functions to not play instantaneously . Just like playing against a human.

I know the skill levels play with a natural delay but I think a more realistic game on hadicap levels is gotten from a program on full strength but with a reduced time for 'thinking' rather than having a program purposely picking a sub optimal move?

So throttle functions and ladder ratings but with a normal response delay may be a good option to better simulate a chess game if needed?

Just a thought
Thanks

I think that can pretty easily implemented, years ago, I had it in crafty se. I understand it completely why you would want that - I also prefer the shortened time allowed to think as opposed to deliberately picking sub optimal moves as well. I will soon have a Stockfish Crazy House version with the "ladder feature" as well. It will be a separate engine for now.

As promised , we have the latest Stockfish 8 sse with the "Ladder" and the new "Ladder Delay" uci options as well as the variant playing Stockfish 8 version with the same Ladder options.

Official Stockfish Github page: https://github.com/official-stockfish/Stockfish

MB's Github Page with Source and macOS exe: https://github.com/MichaelB7

Stockfish-8sse111916 mac OS exe: https://github.com/MichaelB7/Stockfish/ ... _macOS.zip

Stockfish-8-with Crazy House and others variants - Source and Mac Exe https://github.com/MichaelB7/Stockfish/ ... yHouse.zip (includes Ladder and Ladder Delay)

Make sure you have the latest uci2wb (Source and macOS exe):
https://github.com/MichaelB7/Stockfish/ ... 7c084c.zip

This the xBoard.conf settings that works for the variant playing Stockfish for me to play crazyhouse under xBoard on mac OS. xboard version 4.9.1 is highly recommended for variant play.

Code: Select all

-fcp "/Users/michaelbyrne/cluster.mfb/stockfish-8-CH" -fd "/Users/michaelbyrne/cluster.mfb" -fUCCI -variant crazyhouse  -firstFeatures variants="crazyhouse" 

Summary:
"Ladder Delay" is a sleep function used in conjunction with the uci option "Ladder". Ladder reduces the number of positions for human play. "Ladder Delay" wait will force Stockfish to "sleep" until the normal time control for the time control which was selected is met. It's a non busy sleep and will not use your CPU while Stockfish is sleeping. The ladder settings allows Stockfish to play at a range estimated ELO from 1200 to 2600. It slowly increments the number of positions Stock\fish will see, the positions increase every 25 ELO roughly 19% , effectively doubling the nodes for 100 ELO. If one starts at the bottom of the ladder, Sf would play at a near 1200 level. At Ladder level 1250, , it will look at ~ 19% more positions. Level 1300. would see double the positions. There are 57 different playing levels , starting with 1200, 1225 1250 etc., ...all the way up to 2600.

The Ladder Delay function also works as toggle,when it's your move, you can toggle the delay off or on, so if you think the move is an obvious recapture, you can toggle it off and on the next turn, toggle it back on.

With Ladder setting 1200 and skill level set to 3, you can get a very weakened Crazy House Stockfish - ideal for those new to Crazy House

Code: Select all

[Event "Computer Chess Game"]
[Site "Mac-Pro.local"]
[Date "2016.11.19"]
[Round "-"]
[White "michaelbyrne"]
[Black "Stockfish 8 Crazy House 64 POPCNT (UCI2WB)"]
[Result "1-0"]
[TimeControl "300+5"]
[Variant "crazyhouse"]

1. e4 d6 {+0.11/1} 2. d4 d5 {-0.50/1} 3. e5 Nc6 {-0.81/1} 4. f4 a6
{+0.04/1 0.1} 5. Nf3 e6 {-0.42/1} 6. Bd3 Nge7 {-0.27/1 13} 7. O-O Nf5
{-0.92/1 13} 8. c3 Bd7 {-1.24/1 13} 9. Bxf5 exf5 {-0.93/1 13} 10. Ng5 B@b5
{-0.60/1 13} 11. Nxf7 Kxf7 {+0.51/1 13} 12. N@g5+ Qxg5 {-0.36/1 13} 13.
fxg5 Bxf1 {-0.36/1 13} 14. Qh5+ g6 {+3.65/1 13} 15. Q@f6+ Kg8
{-1000.01/2 13} 16. P@f7#
{Black resigns} 1-0

Found a time control bug in the Stockfish 8 Variant version - this bug is related to the Ladder option. Updated Source and macOS exe, same link as before.

https://github.com/MichaelB7/Stockfish/ ... yHouse.zip

Will now check to see if it exists in the sse version.

[tpoppins]

All I need now is some kind soul to compile a Windows version , also a 32 bit if possible.

I will provide both once Michael announces the code is ready.

[MikeB]

Hi Mike

Thank you for these stockfish versions. I don't belong to a chess club , hence I play short games on line and longer games against computers.

So I appreciate weakened, handicapped programs.

Thank you for the ratings ladder and throttle options which I find very useful.

I was just wondering for any future versions if there could be an option for ladder ratings and throttle functions to not play instantaneously . Just like playing against a human.

I know the skill levels play with a natural delay but I think a more realistic game on hadicap levels is gotten from a program on full strength but with a reduced time for 'thinking' rather than having a program purposely picking a sub optimal move?

So throttle functions and ladder ratings but with a normal response delay may be a good option to better simulate a chess game if needed?

Just a thought
Thanks

I think that can pretty easily implemented, years ago, I had it in crafty se. I understand it completely why you would want that - I also prefer the shortened time allowed to think as opposed to deliberately picking sub optimal moves as well. I will soon have a Stockfish Crazy House version with the "ladder feature" as well. It will be a separate engine for now.

As promised , we have the latest Stockfish 8 sse with the "Ladder" and the new "Ladder Delay" uci options as well as the variant playing Stockfish 8 version with the same Ladder options.

Official Stockfish Github page: https://github.com/official-stockfish/Stockfish

MB's Github Page with Source and macOS exe: https://github.com/MichaelB7

Stockfish-8sse111916 mac OS exe: https://github.com/MichaelB7/Stockfish/ ... _macOS.zip

Stockfish-8-with Crazy House and others variants - Source and Mac Exe https://github.com/MichaelB7/Stockfish/ ... yHouse.zip (includes Ladder and Ladder Delay)

Make sure you have the latest uci2wb (Source and macOS exe):
https://github.com/MichaelB7/Stockfish/ ... 7c084c.zip

This the xBoard.conf settings that works for the variant playing Stockfish for me to play crazyhouse under xBoard on mac OS. xboard version 4.9.1 is highly recommended for variant play.

Code: Select all

-fcp "/Users/michaelbyrne/cluster.mfb/stockfish-8-CH" -fd "/Users/michaelbyrne/cluster.mfb" -fUCCI -variant crazyhouse  -firstFeatures variants="crazyhouse" 

Summary:
"Ladder Delay" is a sleep function used in conjunction with the uci option "Ladder". Ladder reduces the number of positions for human play. "Ladder Delay" wait will force Stockfish to "sleep" until the normal time control for the time control which was selected is met. It's a non busy sleep and will not use your CPU while Stockfish is sleeping. The ladder settings allows Stockfish to play at a range estimated ELO from 1200 to 2600. It slowly increments the number of positions Stock\fish will see, the positions increase every 25 ELO roughly 19% , effectively doubling the nodes for 100 ELO. If one starts at the bottom of the ladder, Sf would play at a near 1200 level. At Ladder level 1250, , it will look at ~ 19% more positions. Level 1300. would see double the positions. There are 57 different playing levels , starting with 1200, 1225 1250 etc., ...all the way up to 2600.

The Ladder Delay function also works as toggle,when it's your move, you can toggle the delay off or on, so if you think the move is an obvious recapture, you can toggle it off and on the next turn, toggle it back on.

With Ladder setting 1200 and skill level set to 3, you can get a very weakened Crazy House Stockfish - ideal for those new to Crazy House

Code: Select all

[Event "Computer Chess Game"]
[Site "Mac-Pro.local"]
[Date "2016.11.19"]
[Round "-"]
[White "michaelbyrne"]
[Black "Stockfish 8 Crazy House 64 POPCNT (UCI2WB)"]
[Result "1-0"]
[TimeControl "300+5"]
[Variant "crazyhouse"]

1. e4 d6 {+0.11/1} 2. d4 d5 {-0.50/1} 3. e5 Nc6 {-0.81/1} 4. f4 a6
{+0.04/1 0.1} 5. Nf3 e6 {-0.42/1} 6. Bd3 Nge7 {-0.27/1 13} 7. O-O Nf5
{-0.92/1 13} 8. c3 Bd7 {-1.24/1 13} 9. Bxf5 exf5 {-0.93/1 13} 10. Ng5 B@b5
{-0.60/1 13} 11. Nxf7 Kxf7 {+0.51/1 13} 12. N@g5+ Qxg5 {-0.36/1 13} 13.
fxg5 Bxf1 {-0.36/1 13} 14. Qh5+ g6 {+3.65/1 13} 15. Q@f6+ Kg8
{-1000.01/2 13} 16. P@f7#
{Black resigns} 1-0

Found a time control bug in the Stockfish 8 Variant version - this bug is related to the Ladder option. Updated Source and macOS exe, same link as before.

https://github.com/MichaelB7/Stockfish/ ... yHouse.zip

Will now check to see if it exists in the sse version.

Updated Stockfish SSE ( fix Ladder Delay)

macOS exe link: https://github.com/MichaelB7/Stockfish/ ... _macOS.zip

source updated: https://github.com/MichaelB7

also latest official Stockfish for macOS:
https://github.com/MichaelB7/Stockfish/ ... cOS%20.zip
based on Official Stockfish Github page: https://github.com/official-stockfish/Stockfish

note if you run "bench" on Official Stockfish for the macOS, you may see a faster "bench":

Code: Select all

official
===========================
Total time (ms) : 3119
Nodes searched  : 5773672
Nodes/second    : 1851129

vs. SSE

Code: Select all

sse
===========================
Total time (ms) : 3143
Nodes searched  : 5773672
Nodes/second    : 1836993

but if you run bench 16 1 24, you will find sse about 1% faster

Code: Select all

official
===========================
Total time (ms) : 283537
Nodes searched  : 490751043
Nodes/second    : 1730818

sse
===========================
Total time (ms) : 280562
Nodes searched  : 490751043
Nodes/second    : 1749171

and that is also true if you run "go depth 30" from start position

Code: Select all

official
===========================
info depth 30 seldepth 44 multipv 1 score cp 17 nodes 239035854 nps 1424367 hashfull 999 tbhits 0 time 167819 pv d2d4 g8f6 g1f3 e7e6 c2c4 d7d5 b1c3 f8b4 c1g5 b8d7 g5f6 b4c3 b2c3 d7f6 e2e3 e8g8 c4d5 e6d5 f1d3 c8g4 a1b1 b7b6 e1g1 a8c8 h2h3 g4f3 d1f3 c7c5 f1e1 f8e8 d3f5 c8c7 f3f4

sse
===========================
info depth 30 seldepth 44 multipv 1 score cp 17 nodes 239035854 nps 1442425 hashfull 999 tbhits 0 time 165718 pv d2d4 g8f6 g1f3 e7e6 c2c4 d7d5 b1c3 f8b4 c1g5 b8d7 g5f6 b4c3 b2c3 d7f6 e2e3 e8g8 c4d5 e6d5 f1d3 c8g4 a1b1 b7b6 e1g1 a8c8 h2h3 g4f3 d1f3 c7c5 f1e1 f8e8 d3f5 c8c7 f3f4

[tpoppins]

SF SSE 161120 (rev 4252) Windoze bins:

TinyUpload
MediaFire

Code: Select all

sf-sse-161120-w32-old_tp.exe .... for old Win32 systems
sf-sse-161120-w32-sse_tp.exe .... for Win32 systems with SSE
sf-SSE-161120-x64_tp.exe ........ for old x64 systems
sf-SSE-161120-x64-popcnt_tp.exe . for 'modern' x64 systems with POPCNT
sf-sse-lp.patch ................. a Large Pages patch (for self-compiles)

The w32 compiles have been built and tested on WinXP+SP3, the rest on 
Win7 x64 Pro. The x64 builds feature Large Pages support - run the execs 
or the GUI with admin privileges to enable it. No BMI2 compile at this time.

Thanks to Marco Zerbinati for the Large Pages code
http://preview.tinyurl.com/hzmqdcf

Bench: 5773672

Stockfish 8 Variant Windoze bins:

TinyUpload
MediaFire

Code: Select all

sf-8-variant-161120-w32-old_tp.exe .... for old Win32 systems
sf-8-variant-161120-w32-sse_tp.exe .... for Win32 systems with SSE
sf-8-variant-161120-x64_tp.exe ........ for old x64 systems
sf-8-variant-161120-x64-popcnt_tp.exe . for 'modern' x64 systems with POPCNT

The w32 compiles have been built and tested on WinXP+SP3, the rest on 
Win7 x64 Pro. The POPCNT build features Large Pages support - run the exec 
or the GUI with admin privileges to enable it. No BMI2 compile at this time.

Thanks to Brice Allenbrand for Stockfish BYO.

Bench: 5773672

Michael, please check out the LP code patch. It generates some (non-critical) warning from the compiler, perhaps you could clean them up and incorporate the patch in your code base? I didn't use it for the Variant bins since for some reason it made the POPCNT exec slower than vanilla old x64 (!); maybe you could figure out why it worked for SSE but not Variant.

[MikeB]

SF SSE 161120 (rev 4252) Windoze bins:

TinyUpload
MediaFire

Code: Select all

sf-sse-161120-w32-old_tp.exe .... for old Win32 systems
sf-sse-161120-w32-sse_tp.exe .... for Win32 systems with SSE
sf-SSE-161120-x64_tp.exe ........ for old x64 systems
sf-SSE-161120-x64-popcnt_tp.exe . for 'modern' x64 systems with POPCNT
sf-sse-lp.patch ................. a Large Pages patch (for self-compiles)

The w32 compiles have been built and tested on WinXP+SP3, the rest on 
Win7 x64 Pro. The x64 builds feature Large Pages support - run the execs 
or the GUI with admin privileges to enable it. No BMI2 compile at this time.

Thanks to Marco Zerbinati for the Large Pages code
http://preview.tinyurl.com/hzmqdcf

Bench: 5773672

Stockfish 8 Variant Windoze bins:

TinyUpload
MediaFire

Code: Select all

sf-8-variant-161120-w32-old_tp.exe .... for old Win32 systems
sf-8-variant-161120-w32-sse_tp.exe .... for Win32 systems with SSE
sf-8-variant-161120-x64_tp.exe ........ for old x64 systems
sf-8-variant-161120-x64-popcnt_tp.exe . for 'modern' x64 systems with POPCNT

The w32 compiles have been built and tested on WinXP+SP3, the rest on 
Win7 x64 Pro. The POPCNT build features Large Pages support - run the exec 
or the GUI with admin privileges to enable it. No BMI2 compile at this time.

Thanks to Brice Allenbrand for Stockfish BYO.

Bench: 5773672

Michael, please check out the LP code patch. It generates some (non-critical) warning from the compiler, perhaps you could clean them up and incorporate the patch in your code base? I didn't use it for the Variant bins since for some reason it made the POPCNT exec slower than vanilla old x64 (!); maybe you could figure out why it worked for SSE but not Variant.

Thanks very much T for the windows exe, will place them on my GitHub page. Unfortunately, I'm on macOS which does not use LP and it ir=s not something I'm not familiar with.

The latest Windows exe's are now on Github

sf-sse-161120_tp_windows: https://github.com/MichaelB7/Stockfish/ ... indows.zip

sf-8-variant-161120_tp_Windows:
https://github.com/MichaelB7/Stockfish/ ... indows.zip

[MikeB]

just really learning Crazy House - this is my best game thus far , using the Ladder rating of 1200 - generally less than 100 nodes ,but keeping skill at 20 ( highest) - also no take backs here ;>). For now using no opening book.

Was in control at move 20, lost my way around move 40, but then came back.

Code: Select all

[Event "Computer Chess Game"]
[Site "Mac-Pro.local"]
[Date "2016.11.20"]
[Round "-"]
[White "michaelbyrne"]
[Black "Stockfish 8 Variant 64 POPCNT (UCI2WB)"]
[Result "1-0"]
[TimeControl "120+5"]
[Variant "crazyhouse"]
[Annotator "18... +5.43"]

1. e4 e5 {-0.45/2 7} 2. Bc4 Nf6 {+0.30/2 7} 3. d3 d5 {+0.93/2 7} 4. exd5
Nxd5 {+0.23/2 7} 5. P@e4 Nf4 {+4.10/2 7} 6. Bxf4 exf4 {+0.21/2 7} 7. Bxf7+
Kxf7 {+1.11/2 7} 8. Nf3 Kg8 {+1.70/2 7} 9. N@e5 P@f7 {+2.14/2 8} 10. O-O
Bd6 {+1.62/2 8} 11. Nc4 B@g4 {+1.62/2 8} 12. Nxd6 Qxd6 {+1.83/2 8} 13. P@e2
Nc6 {+3.20/2 8} 14. e5 Nxe5 {+5.35/2 8} 15. Nxe5 Qxe5 {+6.24/2 8} 16. B@c3
Qxe2 {+7.57/2 8} 17. Qxe2 Bxe2 {+0.58/2 8} 18. N@e7+ Kf8 {+5.43/3 8} 19.
Q@c5 B@d6 {+8.20/2 8} 20. Bxg7+ Kxg7 {+10.73/2 8} 21. Qg5+ N@g6
{+10.47/2 8} 22. P@h6+ Kf8 {+12.99/4 8} 23. Nxg6+ hxg6 {+13.10/3 8} 24. Re1
Q@e6 {+12.27/2 8} 25. N@e4 B@e7 {+12.22/2 8} 26. Qa5 b6 {+13.56/2 8} 27.
Qd2 P@c3 {+11.27/2 8} 28. Nbxc3 Rxh6 {+6.47/2 8} 29. Rxe2 Be5 {+6.09/2 8}
30. Rae1 P@b4 {+7.29/2 8} 31. P@g5 bxc3 {+10.05/2 8} 32. bxc3 Rh4
{+10.18/2 8} 33. Nf6 P@e3 {+11.42/2 7} 34. fxe3 B5xf6 {+10.51/2 7} 35. gxf6
Bxf6 {+9.87/2 7} 36. exf4 Qxa2 {+9.03/2 7} 37. Re8+ Kg7 {+11.60/4 7} 38.
B@f8+ Kg8 {+8.85/2 7} 39. Be7+ Kh7 {+1.36/2 7} 40. Bxf6 N@h3+ {-0.73/2 6}
41. Kh1 N@f2+ {+6.48/2 6} 42. Qxf2 P@b2 {-1000.01/1 6} 43. B@g8+ Kh6
{-1000.02/2 6} 44. B@g5+ Nxg5 {-1000.02/2 6} 45. fxg5+ Kh5 {-4.61/2 6} 46.
N@f4+ Rxf4 {-2.59/2 6} 47. Qxf4 N@f2+ {-7.46/2 6} 48. Qxf2 N@f5
{-12.95/2 5} 49. R@h6+ Nxh6 {-7.08/2 5} 50. N@g7+ Kg4 {-1000.01/3 5} 51.
h3#
{Black resigns} 1-0

ugh! just did some quick analysis - missed a mate in 2 and a mate in 1 , but like said I'm just getting used to crazyhouse . SF also had several chances to mate me, but due to the weak level, failed to see them.

[Vinvin]

just really learning Crazy House - this is my best game thus far , using the Ladder rating of 1200 - generally less than 100 nodes ,but keeping skill at 20 ( highest) - also no take backs here ;>). For now using no opening book.

Was in control at move 20, lost my way around move 40, but then came back.

Code: Select all

[Event "Computer Chess Game"]
[Site "Mac-Pro.local"]
[Date "2016.11.20"]
[Round "-"]
[White "michaelbyrne"]
[Black "Stockfish 8 Variant 64 POPCNT (UCI2WB)"]
[Result "1-0"]
[TimeControl "120+5"]
[Variant "crazyhouse"]
[Annotator "18... +5.43"]

1. e4 e5 {-0.45/2 7} 2. Bc4 Nf6 {+0.30/2 7} 3. d3 d5 {+0.93/2 7} 4. exd5
Nxd5 {+0.23/2 7} 5. P@e4 Nf4 {+4.10/2 7} 6. Bxf4 exf4 {+0.21/2 7} 7. Bxf7+
Kxf7 {+1.11/2 7} 8. Nf3 Kg8 {+1.70/2 7} 9. N@e5 P@f7 {+2.14/2 8} 10. O-O
Bd6 {+1.62/2 8} 11. Nc4 B@g4 {+1.62/2 8} 12. Nxd6 Qxd6 {+1.83/2 8} 13. P@e2
Nc6 {+3.20/2 8} 14. e5 Nxe5 {+5.35/2 8} 15. Nxe5 Qxe5 {+6.24/2 8} 16. B@c3
Qxe2 {+7.57/2 8} 17. Qxe2 Bxe2 {+0.58/2 8} 18. N@e7+ Kf8 {+5.43/3 8} 19.
Q@c5 B@d6 {+8.20/2 8} 20. Bxg7+ Kxg7 {+10.73/2 8} 21. Qg5+ N@g6
{+10.47/2 8} 22. P@h6+ Kf8 {+12.99/4 8} 23. Nxg6+ hxg6 {+13.10/3 8} 24. Re1
Q@e6 {+12.27/2 8} 25. N@e4 B@e7 {+12.22/2 8} 26. Qa5 b6 {+13.56/2 8} 27.
Qd2 P@c3 {+11.27/2 8} 28. Nbxc3 Rxh6 {+6.47/2 8} 29. Rxe2 Be5 {+6.09/2 8}
30. Rae1 P@b4 {+7.29/2 8} 31. P@g5 bxc3 {+10.05/2 8} 32. bxc3 Rh4
{+10.18/2 8} 33. Nf6 P@e3 {+11.42/2 7} 34. fxe3 B5xf6 {+10.51/2 7} 35. gxf6
Bxf6 {+9.87/2 7} 36. exf4 Qxa2 {+9.03/2 7} 37. Re8+ Kg7 {+11.60/4 7} 38.
B@f8+ Kg8 {+8.85/2 7} 39. Be7+ Kh7 {+1.36/2 7} 40. Bxf6 N@h3+ {-0.73/2 6}
41. Kh1 N@f2+ {+6.48/2 6} 42. Qxf2 P@b2 {-1000.01/1 6} 43. B@g8+ Kh6
{-1000.02/2 6} 44. B@g5+ Nxg5 {-1000.02/2 6} 45. fxg5+ Kh5 {-4.61/2 6} 46.
N@f4+ Rxf4 {-2.59/2 6} 47. Qxf4 N@f2+ {-7.46/2 6} 48. Qxf2 N@f5
{-12.95/2 5} 49. R@h6+ Nxh6 {-7.08/2 5} 50. N@g7+ Kg4 {-1000.01/3 5} 51.
h3#
{Black resigns} 1-0

ugh! just did some quick analysis - missed a mate in 2 and a mate in 1 , but like said I'm just getting used to crazyhouse . SF also had several chances to mate me, but due to the weak level, failed to see them.

Amazing ! I just started to play against SF-zh on Lichess yesterday too !
Lost to level 1 then beat level 1 and level 2 :
https://fr.lichess.org/bnhRRYVM/black
https://fr.lichess.org/y9js4iy0
https://fr.lichess.org/jJHlBAtI

[Rowen]

Hi everyone

No doubt I am missing something obvious here but I cant get this crazyhouse version to work in my fritz gui ( I am still using a Fritz 12 gui ).

Presumably fritz ( 12 ) gui doesnt support crazy house ? or have I missed something. When using the stockfish varient in the GUI it just plays standard chess.

With regard to standard chess I have only played a few games but so far the ladder rating handicap levels seem to play very realistically, at least a lot better than some other handcapping methods. well done and thanks.