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Comments by Carlos Cetina

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Game Courier Logs. View the logs of games played on Game Courier.[All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2022-06-14 UTC

Same to me.

Mosaic Chess. Large variant combining pieces from various other games.[All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2022-01-14 UTC

Testing the preset of this variant using the PLAY someone at the same location resource, I got to a position that shows that there is a bug.

After the following moves

1. P g4-g6

1 ... p g9-g7

2. Z i1-g4

2 ... c g10-g9

3. Z g4-i7

3 ... c g9-g8

4. P f4-f5

4 ... a e11-i7

5. S e3-f4

5 ... a i7-d2; q-dest

6. S f4-g5

6 ... q d2-i7

7. A h2-f4

7 ... q i7-i3 // - check! -

White has only 2 moves for removing the check: 8. E j3-i3 and 8. I k3-i3

However, the first is banned by the software warning that

g4 is empty. Use your browser's BACK button to go back to the previous page, then reload if necessary. If this is your settings file, you may edit it at .php? game = Mosaic + Chess & settings = mosaic & submit = Edit 

while when wanting to perform the latter, the software asks

Which piece will you promote to? 

showing a menu of 19 options, all pieces of the blue side.

EDIT: Just realized that moving 8. U j1-i3 cancels the check correctly but does not invalidate the gist of the report.

Symmetric Chess. Missing description (9x8, Cells: 72) [All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2021-12-02 UTC

Very good, having cleared the cache and deleted the cookies, the AI no longer commits the illegality of not converting the bishop. Now it plays 24 ... Qc4. Continuing the game it developed like this:

1.g3 d5 2.d4 f5 3.Bg2 e6 4.f4 Qb4 5.c3 Qb5 6.Nf2 g6 7.Nd3 a5 8.a4 Qc4 9.Nd2 Qc6 10.Ne5 Qb6 11.b3 Nc6 12.Ndf3 Qd6 13.Ba3 Qd8 14.Bc5 Qa6 15.Qf2 Nxe5 16.Nxe5 b6 17.Ba3 Nf7 18.Nxf7 Bxf7 19.O-O Qf6 20.c4 dxc4 21.Bxa8 Qxa8 22.Ki1 cxb3 23.Rb1 Qd5 24.Rxb3 Qc4 25.Rd3 b5 26.axb5 Qxb5 27.Qa1 i5 28.Rb1 Qd5 29.Bc5 Qa8 30.Qa4 c6 31.Bb6 Bd8 32.Bxd8 Kxd8 33.Rdb3 Qa6 34.Rb6 Qa7 35.Qxc6 h5 36.Qd6 Qd7 37.Rb8#

Thanks for showing me the solution. So when will we see the Interactive Diagram offered on the Google Apps Store?

Carlos Cetina wrote on 2021-12-01 UTC

It seems that there is a bug such that the AI does not always make the conversion as can be seen in the following game on move 24 of the blue side:

1.g3 d5 2.d4 f5 3.Bg2 e6 4.f4 Qb4 5.c3 Qb5 6.Nf2 g6 7.Nd3 a5 8.a4 Qc4 9.Nd2 Qc6 10.Ne5 Qb6 11.b3 Nc6 12.Ndf3 Qd6 13.Ba3 Qd8 14.Bc5 Qa6 15.Qf2 Nxe5 16.Nxe5 b6 17.Ba3 Nf7 18.Nxf7 Bxf7 19.O-O Qf6 20.c4 dxc4 21.Bxa8 Qxa8 22.Ki1 cxb3 23.Rb1 Qd5 24.Rxb3 Bd7 25.Rc3 c5 26.Rd3 c4 27.Rd2 i5 etc

Carlos Cetina wrote on 2021-12-01 UTC

Magnificent! I encourage you to publish your Interactive Diagram in the aforementioned apps store since it is a very good showcase to spread ideas, in such a way that a certain number of variants could be played by default (including Symmetric Chess, of course!). I believe that you could get a fair remuneration in money for your work including banner ads. Using the app would be free. What do you say?

Carlos Cetina wrote on 2021-12-01 UTC

Thank you very much, HG. It's a great improvement.

One of my biggest dreams is to see one day in the Google Apps Store one with which this chess variant can be played against the AI. Do you think that the Interactive Diagram software could be used in the Android environment?

ChessVA computer program
. Program for playing numerous Chess variants against your PC.[All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2021-04-14 UTC

Okay, Greg, you are welcome. The new link does work. I see that you have added 12 variants including 2 invented by Vitya Makov: Chess 9x9 and Cardinal Chess. Those interested in seeing how ChessV handles these 2 variants take a look at the following YouTube links:

Chess 9x9

Cardinal Chess

Congratulations and thank you for such a commendable work you do!

Carlos Cetina wrote on 2021-04-11 UTC

Hi Greg,

I can't download ChessV2.3 The link does not work. Chrome seems to block it. I wonder if it has nothing to do with the fact that this browser wants URLs to be safe and I see that the protocol you use is http and not htpps.

Apothecary Chess Tournament[Subject Thread] [Add Response]
Carlos Cetina wrote on 2021-01-15 UTC

This would depend on how those pieces are defined. If they are treated as making two separate moves on the same turn, and the second move is capable of checking the King, things could prove difficult. If their move is treated as a single move that requires a turning point, or checking is allowed only on the first part of a move, then it's not a problem. There could even be a hybrid solution, in which the piece has a checking-only move that completes the whole move, but it otherwise handles actual moves as a pair of separate moves.

With regard to Sissa, perhaps the hybrid solution is the right one. Take into account the uniqueness of this piece. In the diagram below the blue King is in check in two different ways but what is somewhat paradoxical is that by moving to d6 or e6 it evades the check.





Sac Chess. Play classical chess along with classical compound pieces: amazons, chancellors, archbishops...[All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2020-12-12 UTC


Ready! Mission accomplished. It is difficult to understand how we did not realize that mistake before.

Carlos Cetina wrote on 2020-12-12 UTC


Tomorrow I will make the correction because now I have no access to my laptop.

About Game Courier. Web-based system for playing many different variants by email or in real-time.[All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2020-11-22 UTC

I don't know what happened after I submitted my last move but, although the log seems to be broken, it can be restored by clicking on the small rectangle below the promotions menu.

Expanded Chess. An attempt at a logical expansion of Chess to a 10x10 board.[All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2020-11-21 UTC

It seems that the sissa-arx-2020-246-116 log is broken, however I happened to discover a strange way to recover it by clicking on the small rectangle below the promotions menu.

Sac Chess. Play classical chess along with classical compound pieces: amazons, chancellors, archbishops...[All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2020-09-10 UTC

OK, thanks again for your attention. Currently I am accessing that and all the logs normally. I don't know what could have happened. Sorry for the false alarm.

Carlos Cetina wrote on 2020-09-08 UTC

I discovered that the log is loaded correctly from the main logs page only when I am NOT signed in. From my "Your Active Game Logs + Open Invitations" page, being me signed in, the log is displayed rightly when I click on my name, but if I click the link listed in the logs column, then the problem arises.

What makes the matter more intriguing is that this happens only with a particular log and using my laptop with Windows 10 and Chrome. No problem using mobile devices.

Anyway, thanks for answering, I already made my move.    

Carlos Cetina wrote on 2020-09-08 UTC


The following log has a strange glitch because the page doesn't load completely and I can't make my move. Could you please take a look at it?

I don't think my computer or the browser I use has anything to do with it.

Sac Chess. Game with 60 pieces. (10x10, Cells: 100) [All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2020-08-03 UTC

Thanks, Kevin, I already read the game. It shows very well the dangers that exist since the opening. Playing carelessly Black enters after just 4 moves into a near-deadly whirlwind. Your style of play is clearly very aggressive trying to do as much damage as possible in the minimum amount of time.

I share 2 games that I played vs the applet imitating its style of play. The first testifies that the AI does make castlings. The second took a long time because I intentionally sought to reach a final of kings and pawns to test pawn's promotion on both sides.

1.Ng4 Jb7 2.Nd4 Ji7 3.c4 Nd7 4.Jc3 Ng7 5.h4 Mc9 6.Jh3 Mh9 7.e4 Jg6 8.f4 Jd6 9.i4 Nf6 10.b4 Md7 11.Mb3 Cc9 12.Mi3 c7 13.Bf3 Ne6 14.Be3 Jde7 15.Nxe6 Jxe6 16.Nxf6 Jexf6 17.d4 Mhg7 18.g4 h6 19.Cd3 Bh8 20.Cg3 O-O 21.O-O Ac8 22.f5 Jgf7 23.e5 J6e7 24.Ac2 Af9 25.f6 Jexf6 26.exf6 Mxf6 27.Cgf5 Mfe6 28.Cxi8+ Ki9 29.Cxg7 Bxg7 30.Mj5 Ch8 31.Jj4 Ad6+ 32.M°g3 Ade7 33.Jd5 Ad7 34.Jxe6 Jxe6 35.Cg6 Bxd4 36.Cxh8+ Bxh8 37.Ji6 Bxb2 38.Jxj8+ Kh8 39.Ai8#

1.Jb4 Jb7 2.Ji4 Ji7 3.Jh4 Ng7 4.Ni4 f6 5.Jc4 Mh9 6.Nb4 Af8 7.f5 Jd6 8.Jxd6 Axd6 9.Af3 Nd7 10.Ad5 Mc9 11.Axd6 Bxd6 12.e4 Jh7 13.Bf4 Cg9 14.Bxd6 Cxd6 15.Ch2 Mf8 16.Cd2 Ne5 17.d4 Nf7 18.Cf4 Mcd7 19.Cxd6 Mxd6 20.Mc2 Cc9 21.Me3 Cd7 22.g4 Ne5 23.Ac2 Cb6 24.dxe5 Cxe3+ 25.Qxe3 Mdf7 26.e6 Me7 27.e5 fxe5 28.Cxe5 Mexe6 29.Bf3 Me7 30.O-O Jf6 31.M°g3 Jxe5 32.M°xe5 Mff7 33.Nc6 Md7 34.Jg6 Mg9 35.Jf6 Mf8 36.Qxj8 b7 37.Nd4 d6 38.M°g3 Mxf6 39.Qg5 Mgf7 40.Qf4 Sg9 41.Ng5 M7d7 42.a5 Qxa5 43.Ra2 Qc5 44.Rxa8 Af8 45.M°b5 Ne6 46.fxe6 Mxf4 47.M°xc5 Mxc5 48.M°xf4 Axf4+ 49.Ki2 Mxg5 50.Ad2 Sf8 51.Axf4 Sxf4 52.Mh2 M°d8 53.Sd2 Rg9 54.Sf2 Sf6 55.b5 M°ee9 56.Be2 g6 57.Sxf6+ M°xf6 58.Rf2 M°eg7 59.b6 Sc9 60.Nb5 Mxe6 61.Nc7 Me4 62.Sc1 Mg3+ 63.Kj2 Rb8 64.Rxb8 Sxb8 65.Nxd9 Sc9 66.Nc7 Se9 67.Bb5 Sf8 68.c4 Md3 69.Sf1 M°ff7 70.Rf3 Me5 71.Sd1 M°ff6 72.Sxd6 M°xi3+ 73.Kxi3 Mxf3 74.Sd9+ Kf10 75.Sd10+ Kf9 76.Mxf3 Sxf3 77.Bxe8+ Kf8 78.Sf10+ Rf9 79.Sxf9+ Ke7 80.Sxf3 i6 81.Sf7+ M°xf7 82.Bxf7 Kxf7 83.g5 i5 84.Ki4 Kg7 85.Kxi5 Kh7 86.j5 Ki7 87.h4 Kh7 88.j6 Ki8 89.Kh6 h7 90.Ne8 Kh8 91.j7 Kg8 92.Ki7 Kf7 93.Nc7 Kg7 94.j8 Kg8 95.Ki8 Kg7 96.j9 Kf7 97.j10=A Kg8 98.c5 h6 99.gxh6 Kf7 100.h7 Kf8 101.h8 Kg8 102.h9 Kf8 103.h10=A+ Kf7 104.Af8+ Kxf8 105.Ag7+ Kxg7 106.Ki7 Kg8 107.Kh6 Kf7 108.Nb5 Kf6 109.Nd6 c6 110.Nxb7 Kf7 111.Nd8+ Kf6 112.b7 Ke7 113.Nxc6+ Kf6 114.b8 Kf7 115.b9 Ke6 116.b10=A Kf7 117.Nd8+ Kf6 118.c6 Kf5 119.c7 Kf6 120.c8 Kf5 121.c9 g5 122.c10=A gxh4 123.Acd9 h3 124.Adc10 h2 125.Acd9 h1=A+ 126.Ah5+ Axh5+ 127.Kxh5 Kf4 128.Ab4+ Kf5 129.Ad4#

Carlos Cetina wrote on 2020-08-02 UTC
I just did the test and the result is that the Applet says ***I resign!*** highlighted in red, so I don't think you have to worry, HG, because there could be a bug.

On the other hand, I already changed the definition of the King from KisO2 to KisjO2.

I use Chrome on Windows 10.

I would very much like, Kevin, if you would share a game of yours vs the Applet!

Carlos Cetina wrote on 2020-07-31 UTC

OK, you are welcome.

Play-test applet for chess variants. Applet you can play your own variant against.[All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2020-07-31 UTC

OK, don't worry and thanks!

Sac Chess. Game with 60 pieces. (10x10, Cells: 100) [All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2020-07-30 UTC


I configured the Muller's applet to play your variant. Hope you like it and find it interesting to face its AI. For me it is a great resource to enjoy doing something that I like.


files=10 ranks=10 promoZone=1 promoChoice=A Q M C S R M° J B N graphicsDir=/graphics.dir/alfaerie/ squareSize=52 graphicsType=gif pawn:P:ifmnDfmWfceF:pawn:a3,b3,c3,d3,e3,f3,g3,h3,i3,j3,,a8,b8,c8,d8,e8,f8,g8,h8,i8,j8 knight:N:N:knight:c2,h2,,c9,h9 bishop:B:B:bishop:d2,g2,,d9,g9 rook:R:R:rook:b2,i2,,b9,i9 queen:Q:Q:queen:e2,,e9 cardinal:C:BN:cardinal:b1,i1,,b10,i10 marshall:M:RN:chancellor:a1,j1,,a10,j10 amazon:A:QN:amazon:d1,g1,,d10,g10 judge:J:WFN:pegasus:a2,j2,,a9,j9 missionary:M°:BW:promotedbishop:e1,f1,,e10,f10 sailor:S:RF:promotedrook:c1,h1,,c10,h10 king:K:KisjO2:king:f2,,f9

I share the next game I played vs it driving me the white side.

1.Ng4 Jb7 2.Nd4 Ji7 3.h4 Nd7 4.Jh3 Ng7 5.c4 Mc9 6.Jc3 Mh9 7.Mc2 Jc5 8.Mh2 Jg6 9.b4 Jd6 10.f4 a6 11.a5 Nf6 12.e5 Nxg4+ 13.Jxg4 Jde7 14.Be4 Jgf7 15.M°h3 Md7 16.Nf5 Nxf5 17.Jxf5 Cc9 18.Jxe7 Mxe7 19.Jd5 Mb7 20.Bc3 Mg7 21.Kf1 Ch9 22.Jc5 Mc7 23.d5 h6 24.e6 Je7 25.Bxg7 fxg7 26.Jb6 Af8 27.Jxc7 bxc7 28.Qf3 Rb7 29.M°c3 Bh8 30.M°e5 Ca7 31.M°d4 Cb8 32.Cc3 i6 33.M°e5 Sg9 34.Cd4 Ri7 35.Mg4 d6 36.exd7 cxd7 37.f5 d6 38.M°e6 Jd8 39.Mg6 Ah7 40.g5 Cf8 41.Rf2 hxg5 42.Mxg5 Ah6 43.i5 Aj7 44.Ce2 g6 45.f6 Ch7 46.M°e7 Cxg5 47.Axg5 Rxe7 48.fxe7+ Jf7 49.Axi6 Axi6 50.Qxi6 Bxb2 51.Mxb2 Qg7 52.Sg1 Ae9 53.Bxg6 Jf6 54.Rxf6+ Qxf6 55.Sf2 Ag7 56.Cd4 Axi6 57.Sxf6+ Sf8 58.Sxf8+ Kg10 59.Axi6 Sc9 60.Ai10#

King, Queen, Rook, Bishop, Knight and Pawn are labeled as usual. The remain thus:
Amazon: A
Marshall: M
Cardinal: C
Sailor: S
Missionary: M°
Judge: J

I renamed the Archbishop as Cardinal so I could use the A to label the Amazon.

Play-test applet for chess variants. Applet you can play your own variant against.[All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2020-07-30 UTC

Thanks for answering. Actually, I was only interested in what is related to printing, that is, how the movements are described and listed suitable to be read by anyone. I am not concerned if a pawn can not be promoted to a piece whose label includes a special sign.

I have noticed that currently, when copying and pasting the applet's HTML code into a webpage, only is displayed an empty board, piece images are not uploaded. Is this because of a bug? Or did you temporarily put a lock on it so that your work on the GAME code table-driven move generator is not affected?

The applet that I'm posting on Sac Chess, since several days ago I already had it stored in another point of the cyberspace.

Carlos Cetina wrote on 2020-07-29 UTC

OK, thanks; issues of symmetry and castling have been fixed.

I have a question about labeling pieces: I see that 4 are prepended by a + sign [tokin, promoted lance, promoted knight and promoted silver], could the applet handle IDs prepended by an asterisk (*)?

Diagram Editor with scalable graphics. An easy-to-use tool for drawing boards and pieces of any size and color.[All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2020-07-27 UTC

In the effort you, Greg, HG, are making to improve and order the piece images, it would be worthwhile to include the sissa. For many years I have been using the following icons designed by Matthew La Vallee that belong to the Alfaerie Many set:

wsissa   bsissa

Of course I am very grateful to him, however I keep thinking that it could be improved by designing an icon that most faithfully represents a Hindu man. As an example, please take a look at this link:

Do you think that icon could be used? I have the doubt if one could get it for only 1 dollar. It seems very cheap.

Anyway, it would be something great if the sissa could be included in the piece set available in the Play-test applet. 


Play-test applet for chess variants. Applet you can play your own variant against.[All Comments] [Add Comment or Rating]
Carlos Cetina wrote on 2020-07-25 UTC

Okay, thanks. The issue about images has been fixed as can be seen in the following diagram:

files=12 ranks=8 promoZone=1 promoChoice=Z Q S G D M A L H W F graphicsDir=/graphics.dir/alfaerie/ squareSize=52 graphicsType=gif pawn:P:ifmnDfmWfceF:pawn:a2,b2,c2,d2,e2,f2,g2,h2,i2,j2,k2,l2,,a7,b7,c7,d7,e7,f7,g7,h7,i7,j7,k7,l7 queen:Q:Q:queen:d1,,d8 archbishop:A:BN:cardinal:a1,,a8 chancellor:M:RN:chancellor:l1,,l8 amazon:Z:QN:amazon:i1,,i8 sissa:S:mavsiQ:snake:f1,,f8 gryphon:G:FyafsF:gryphon:h1,,h8 dragon:D:WyavsW:dragon:c1,,c8 wazirknight:W:WN:knightwazir:e1,,e8 ferzknight:F:FN:knightferz:j1,,j8 dragon horse:H:BW:promotedbishop:k1,,k8 dragon king:L:RF:promotedrook:b1,,b8 king:K:KisO4:king:g1,,g8

The applet works fine with mirror symmetry but something is wrong with asymmetric setups since after uploading the applet to a webpage they are distorted duplicating some images.

Play-test applet 2

files=12 ranks=8 promoZone=1 promoChoice=A Q S G D M C R B N H graphicsDir=/graphics.dir/alfaerie/ squareSize=52 graphicsType=gif pawn:P:ifmnDfmWfceF:pawn:a2,b2,c2,d2,e2,f2,g2,h2,i2,j2,k2,l2,,a7,b7,c7,d7,e7,f7,g7,h7,i7,j7,k7,l7 queen:Q:Q:queen:b1,,e8 archbishop:C:BN:cardinal:l1,,g8 chancellor:M:RN:chancellor:h1,,l8 amazon:A:QN:amazon:j1,,f8 sissa:S:mavsiQ:snake:f1,,i8 gryphon:G:FyafsF:gryphon:g1,,d8 dragon:D:WyavsW:dragon:c1,,k8 wazirknight:N:WN:knightwazir:e1,,c8 ferzknight:H:FN:knightferz:i1,,j8 dragon horse:B:BW:promotedbishop:k1,,a8 dragon king:R:RF:promotedrook:a1,,b8 king:K:KisO4:king:d1,,h8

I am already labeling the pieces with single letters.

On the other hand, while playing vs the applet's AI at one point it castled Fischer-style, which is problematic in this variant because I am proposing there be no castling. It would be nice if in asymmetric setups one could choose the option "do not cast", but if implementing it requires to spend too much time, please do not worry, for me it is not something urgent, do it when you can.

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