Lozza 1.16

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op12no2
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Joined: Tue Feb 04, 2014 12:25 pm
Location: Gower, Wales
Full name: Colin Jenkins

Lozza 1.16

Post by op12no2 »

I've released Lozza 1.16. Lozza is an "exotic" in that it's written in Javascript - the browser scripting language (not to be confused with Java).
As such performance is dependent on your browser's Javascript engine.

There are various online (mobile friendly) user interfaces for play, analysis and training (currently just a mate-in-1 trainer) - these all run directly in your browser.

Lozza can also be used offline with Arena/Winboard etc on all platforms via node.js. Executables can be easily built for all platforms using jxCore.
Both of these options utilise the Google V8 Javascript engine.

If you are using Google Chrome, Lozza is available as a wrapper app.

The source is a single file which I think is fairly easy to read as the implementation is very basic.

Website: http://op12no2.me/toys/lozza
Win64 exe: http://op12no2.me/toys/lozza/lozza116.exe
Source: http://op12no2.me/toys/lozza/lozza.js
Chrome app: https://chrome.google.com/webstore/deta ... eokenbbmbd

Estimated rating is probably just shy of 2400.

PS: I test in Google Chrome. I've quickly tried various other browsers and it all seems OK but there may be lurking issues that I would be more than happy to fix.

PPS: The analysis web page allows you to supply a fen in the URL and optionally start the analysis. It's best to warn ppl if you ever post a link like that because it will eat significant CPU and possibly compromise any existant high CPU processes.
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Graham Banks
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Re: Lozza 1.16

Post by Graham Banks »

Thanks Colin. :)
gbanksnz at gmail.com
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op12no2
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Re: Lozza 1.16

Post by op12no2 »

My pleasure Graham; thanks for including Lozza in CCRL.

Just off to the pub to watch the RWC final... :) Good luck...!
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Graham Banks
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Re: Lozza 1.16

Post by Graham Banks »

op12no2 wrote:Just off to the pub to watch the RWC final... :) Good luck...!
That's why I'm posting at this ungodly hour. Too nervous to go back to sleep! :lol:
gbanksnz at gmail.com
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cdani
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Location: Andorra

Re: Lozza 1.16

Post by cdani »

Congratulations!
Good luck in the RWC final! :-)
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Sylwy
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Re: Lozza 1.16

Post by Sylwy »

THANK YOU !
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Sylwy
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Re: My test

Post by Sylwy »

http://talkchess.com/forum/viewtopic.ph ... 46&t=50060
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op12no2
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Re: My test

Post by op12no2 »

Thanks Ruxy, slowly but surely and it's a lot of fun.

Here are some pictures for you (link below) - I know you like them! - A weirdly warm and sunny November day out in the UK at a local old Tin Mine and waterfall...

https://www.flickr.com/photos/135580622 ... 0741643905

PS: I did try and reply on the other thread but the Reply button didn't seem to want to play.
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Sylwy
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Location: IAȘI - the historical capital of MOLDOVA
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Re: My test

Post by Sylwy »

op12no2 wrote:Thanks Ruxy, slowly but surely and it's a lot of fun.

Here are some pictures for you (link below) - I know you like them! - A weirdly warm and sunny November day out in the UK at a local old Tin Mine and waterfall...

https://www.flickr.com/photos/135580622 ... 0741643905

PS: I did try and reply on the other thread but the Reply button didn't seem to want to play.
THANK YOU !

Unfortunately below you can see Romania of the last night ! And not only........

Image

Image
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Max
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Re: Lozza 1.16

Post by Max »

op12no2 wrote:I've released Lozza 1.16. Lozza is an "exotic" in that it's written in Javascript - the browser scripting language (not to be confused with Java).
...
...
PS: I test in Google Chrome. I've quickly tried various other browsers and it all seems OK but there may be lurking issues that I would be more than happy to fix.
Very nice project!

While testing with your analysis web page I noticed some differences between Firefox 42 and Safari 9.0.1 on my mac.

Test position #21 from BT-2630:
[d] k7/8/PP1b2P1/K2Pn2P/4R3/8/6np/8 w - -

bm Re1

- Firefox 42:
149.62 21/34 (143cp) Re1 Nxe1 g7 h1=Q
analyze stop at 152.37 s | 177582.69 kn | 1165.49 kn/s | 11/Re3 | 49.2%

- Safari 9.0.1:
178.94 21/35 (143cp) Re1 Nxe1 g7 h1=Q
analyze stop at 180.45 s | 216698.89 kn | 1200.85 kn/s | 11/Re3 | 56%

Firefox:

Code: Select all

149.62 21/34 (143cp) Re1 Nxe1 g7 h1=Q
 55.37 21/34 (0cp)   g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kd7 Qxe5 Qxg2 Qd6 Ke8 Qxb6 d6 Ka7 Qb7 Qxb7 a6xb7 Kxb7 Kd7
 29.53 20/32 (13cp)  g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qxe5 Qxg2 Qe8
 18.45 19/30 (5cp)   g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kd7 Qxe5 Qxg2 Qd6 Ke8 Qxb6 Qg6
 12.76 18/30 (5cp)   g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kd7 Qxe5 Qxg2 Qd6 Ke8 Qxb6 Qg6 Qe3 Kd7 Be5
  8.63 17/28 (0cp)   g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kb5 Qb2 Kc6 Qc3 Kb5 Qb2 Kc6 Qc3 Kb5 Qb2 Kc6 Qc3 Kb5 Qb2 Kc6 Qc3 Kb5 Qb2
  4.38 16/28 (53cp)  g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qxe5 Qxg2 Qe8 Kc5 Qe3 Kc6 Qe8 Kc5 Qe3 Kc6 Qe8 Kc5 Qe3 Kc6 Qe8 Kc5 Qe3 Kc6 Qe8
  2.52 15/27 (76cp)  g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kd7 Qxe5 b7 Ka7 Qxg2 Kxa6
  1.81 14/27 (76cp)  g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kd7 Qxe5 b7 Ka7 Qxg2 Kxa6
  1.15 13/24 (104cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Ka4 Qd4 Kb3 Qxb6 Ka2 Qxa6 Kb2 Nf4
  0.91 12/23 (104cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Ka4 Qd4 Kb3 Qxb6 Ka2 Qxa6 Kb2 Nf4
  0.63 11/20 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc4 Qxe5 Qxg2 Qxh5
  0.54 10/20 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc4 Qxe5 Qxg2 Qxh5
  0.43  9/18 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc4 Qxe5 Qxg2
  0.31  8/15 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb4 Qb2 Kc4 Qxe5
  0.21  7/15 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb4 Qb2 Kc4 Qxe5
  0.13  6/15 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb4 Qb2
  0.09  5/15 (188cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1
  0.06  4/15 (463cp) g7 Nc4 Rxc4 h1=Q
BETA 4 165 >= 165
  0.04  4/15 (96cp)  b7 Kb8 g7 h1=Q
  0.03  3/10 (96cp)  b7 Kb8 g7
  0.01  2/4  (159cp) b7 Kb8
  0.01  1/4  (159cp) b7
  0.01  1/2  (-316cp) Rxe5
Safari:

Code: Select all

178.94 21/35 (143cp) Re1 Nxe1 g7 h1=Q 
 56.66 21/33 (0cp)   g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kd7 Qxe5 Qxg2 Qd6 Ke8 Qxb6 d6 
 30.51 20/33 (13cp)  g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qxe5 Qxg2 Qe8 Kc5 Qe3 Kc4 Qxb6 d6 Ka7 Qb7 Qxb7 a6xb7 Kxb7 Kc5 
 17.31 19/30 (5cp)   g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kd7 Qxe5 Qxg2 Qd6 Ke8 Qxb6 Qg6 Qe3 Kd7 Be5 
 11.97 18/30 (5cp)   g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kd7 Qxe5 Qxg2 Qd6 Ke8 Qxb6 Qg6 Qe3 Kd7 Be5 
  8.06 17/28 (0cp)   g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kb5 Qb2 Kc6 Qc3 Kb5 Qb2 Kc6 Qc3 Kb5 Qb2 Kc6 Qc3 Kb5 Qb2 Kc6 Qc3 Kb5 Qb2 
  3.9  16/28 (53cp)  g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qxe5 Qxg2 Qe8 Kc5 Qe3 Kc6 Qe8 Kc5 Qe3 Kc6 Qe8 Kc5 Qe3 Kc6 Qe8 Kc5 Qe3 Kc6 Qe8 
  2.13 15/27 (76cp)  g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kd7 Qxe5 b7 Ka7 Qxg2 Kxa6 
  1.4  14/27 (76cp)  g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc6 Qc3 Kd7 Qxe5 b7 Ka7 Qxg2 Kxa6 
  0.78 13/24 (104cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Ka4 Qd4 Kb3 Qxb6 Ka2 Qxa6 Kb2 Nf4 
  0.56 12/23 (104cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Ka4 Qd4 Kb3 Qxb6 Ka2 Qxa6 Kb2 Nf4 
  0.28 11/20 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc4 Qxe5 Qxg2 Qxh5 
  0.23 10/20 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc4 Qxe5 Qxg2 Qxh5 
  0.16  9/18 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb5 Qb2 Kc4 Qxe5 Qxg2 
  0.12  8/16 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb4 Qb2 Kc4 Qxe5 
  0.1   7/15 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb4 Qb2 Kc4 Qxe5 
  0.08  6/15 (180cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 Kb4 Qb2 
  0.05  5/15 (188cp) g7 h1=Q g8=Q Bb8 Rxe5 Qa1 
  0.04  4/15 (463cp) g7 Nc4 Rxc4 h1=Q 
BETA 4 165 >= 165
  0.03  4/15 (96cp)  b7 Kb8 g7 h1=Q 
  0.02  3/10 (96cp)  b7 Kb8 g7 
  0.02  2/4  (159cp) b7 Kb8 
  0.01  1/4  (159cp) b7 
  0.01  1/2  (-316cp) Rxe5
The same happens with Safari on the iPad (21/35 depth and ~215 mnodes) and Chrome on Android (21/34 depth and ~175 mnodes).

- Max
Hope we're not just the biological boot loader for digital super intelligence. Unfortunately, that is increasingly probable - Elon Musk
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