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Game: Symmetric Chess Log: per31-cvgameroom-2018-230-425
Carlos Cetina Verified as Carlos Cetina wrote on

White's move 16.B b1-b2 was illegal. Also Black's move 19... b g8-f7 was illegal.

Is the wording of The Bishops Conversion Rule confusing?

Game: Symmetric Sissa Log: panther-cvgameroom-2018-31-137
Carlos Cetina Verified as Carlos Cetina wrote on

Yes, it is checkmate. Thanks to you too, Kevin, for having played. Nicely done!

Game: UC-170-13 Log: sissa-catugo-2018-9-564
Carlos Cetina Verified as Carlos Cetina wrote on

Yes, the new Ubi-Ubi could be named as cuasi-UU or semi-UU. For now, I will keep calling it with its original name.

If the King could still be in check by the Ubi Ubi if it has just captured any piece, what it means is that the King can not actually capture that piece because it's illegal for it to put itself in check.

I did not understand your last question. Could you please clarify it a bit. To improve what? 

Carlos Cetina Verified as Carlos Cetina wrote on

Aurelian:

Before moving, let's make some considerations.

This variant is still under construction so we have to make some adjustments on the way. In general, I try to ensure that each and every piece retains (as much as possible) the attributes they have in the games from which they come.

Given that White's Ubi-Ubi (UU) from h1 is checkmating Blue's King by h1-g3-e4-c3-a4-b6-a8, I propose that we make an exception to the PREGAME RULE and try to play starting from this setup modifying slightly the UU's attributes: NON-CAPTURING it will move normally according its move rule states, but it will be able to capture ONLY those pieces that in the immediate previous turn had captured any piece of its own, in other words, UU can make a capture only if this capture is a RE-CAPTURE.

For example, in the following diagram:

If White to move, then UUxe8 (a3-b5-d6-e8) would be illegal; but if Blue to move and makes Rxe3 (Rook x Bishop), then UUxe3 (a3-c4-e3) would be perfectly legal. Under this view, the King will always be immune to checks from UU. 

What do you think? Would you agree? Do you have any questions regarding the other pieces?

Game: UC-170-13 Log: sissa-catugo-2018-6-836
Carlos Cetina Verified as Carlos Cetina wrote on

The piece on e1/e8 is the Ultima's Coordinator. Such an icon belongs to the Alfaerie Pieces Set .

Carlos Cetina Verified as Carlos Cetina wrote on

Yes, the first piece to be dropped is the Wazir (from A1/A18) and the first "pawn" is the Camel/Pawn (from S1/S18).

The Camel/Pawn may move like a standard Pawn or like a non-capturing only-forward Camel. Okay? All the 8 Pawns from the starting setup are standard ones so they may make the double step initial move and are subject of being captured en passant. I did not move my "d" Pawn twice for strategy reasons that I can not reveal!

The piece placed on f1/f8 is the most powerful of this setup; it may move and capture like QUEEN and also may move and capture like CAMEL; it is similar to the Amazon; so enjoy it!

Game: Royal Rumble Log: sissa-wolff-2017-197-573
Carlos Cetina Verified as Carlos Cetina wrote on

The Ajax Falcon is NOT a leaper, so just like the Korean Elephant must also have the path clear to reach the 2nd diagonal square (labeled 3 on the diagram), but the Ajax Falcon can also move and capture at any square along the path to their 3rd square.

Therefore the Ajax Falcon can stop on it's 1st diagonal square (labeled 2 on the diagram), provided the first orthogonal step is empty; giving the Ajax Falcon the Korean Horse move capability; or it can just move and capture on it's first orthogonal square (labeled 1 on the diagram) in the path of it's Korean Elephant move, just like a Wazir.

Finally the Ajax Falcon has a one 'non-capturing' step in the remaining diagonal directions (red circles in the diagram), like a Ferz, to complete the one-step movement characteristic of the Ajax pieces.

[Diagram and text taken from Ajax Falcon Chess.]

Game: Universal Chess Log: sissa-sxg-2017-160-599
Carlos Cetina Verified as Carlos Cetina wrote on
Sorry! Suffered a kind of Daltonism at the last comment.
Game: Universal Chess Log: sissa-cvgameroom-2016-363-618
Carlos Cetina Verified as Carlos Cetina wrote on
My intention was to enter the 'lost' command but finally my subconscious betrayed me... such is life!
Carlos Cetina Verified as Carlos Cetina wrote on
Hey Nick: Your last move is a mistake because after 15... b4xb1 [Hero x Dancing Horse] 16. d1-c1;b1- [Advancer x Hero] the balance of captured pieces will remain clearly disadvantaged for you. Reciprocating the offer you made me at 2nd turn, let's either finish the game by a mutual agreement draw or rectify the wrong move. The alternative move for saving the piece would be 15.Dancing Horse b1-a3. If you choose the later, then I would restore the position replying said move at my next turn. I will go for whatever you elect.
Game: Berolina Chess Log: makov333-cvgameroom-2016-352-959
Carlos Cetina Verified as Carlos Cetina wrote on
I cannot make my first move because the preset has a bug sending an error message.
Game: UC-170-13 Log: sissa-makov333-2016-271-036
Carlos Cetina Verified as Carlos Cetina wrote on
Critics and skeptics of the feasibility of this game might see it as a test of knowledge about chess variants, and not as a game that is very fun to play.

In this particular case, both players have to know the two important writings 'Nachtmahr' and 'Passed Pawns, Scorpions and Dragon' by Jörg Knappen and George Duke, respectively, to move properly the Quintessence or Essential Nightrider [c1/c8] and the Dragon [e1/e8]. Since the third piece that must be dropped is nothing less than the Lion [Chu Shogi's Shishi], players will have to be familiar with this game too.

Reviewing this starting setup, we see it's perfectly legal because there is no any undefended pawn that may be capturable at the first turn. The pawn on f2 is protected by the c1-Quintessence Nightrider via c1-d3-f2, while the pawn on f7 is protected via c8-d6-f7.

Look out! After 1... p c7-c6, the h2-pawn is pinned.

Game: UC-170-13 Log: sissa-makov333-2016-268-787
Carlos Cetina Verified as Carlos Cetina wrote on
To avoid that the board be overcrowded, I'm thinking to change slightly the mechanics of dropping pawns. Players will have 5 chances for dropping any pawn [as currently is stated] but now they will be more separated from each other.

For Blue:

1st: the pawn on S1 at any turn between the 6 and 10 (including 6 and 10)
2nd: the pawn on T1 at any turn between the 16 and 20 (including 16 and 20)
3rd: the pawn on U1 at any turn between the 26 and 30 (including 26 and 30)
4th: the pawn on S2 at any turn between the 36 and 40 (including 36 and 40)
5th: the pawn on T2 at any turn between the 46 and 50 (including 46 and 50)
6th: the pawn on U2 at any turn between the 56 and 60 (including 56 and 60)
7th: the pawn on S3 at any turn between the 66 and 70 (including 66 and 70)
and so on.

For White:

1st: the pawn on S18 at any turn between the 7 and 11 (including 7 and 11)
2nd: the pawn on T18 at any turn between the 17 and 21 (including 17 and 21)
3rd: the pawn on U18 at any turn between the 27 and 31 (including 27 and 31)
4th: the pawn on S17 at any turn between the 37 and 41 (including 37 and 41)
5th: the pawn on T17 at any turn between the 47 and 51 (including 47 and 51)
6th: the pawn on U17 at any turn between the 57 and 61 (including 57 and 61)
7th: the pawn on S16 at any turn between the 67 and 71 (including 67 and 71)
and so on.

Game: Symmetric Chess Log: sissa-cvgameroom-2015-322-173
Carlos Cetina Verified as Carlos Cetina wrote on
Thanks for having played, Erik. Certainly, there is a short forced mate in 3: 37.Kh4 Qh3+ 38.Kg5 Qf5+ 39.Kh4 Qi5#
Game: Grand Shatranj Log: joejoyce-cvgameroom-2014-171-191
Carlos Cetina Verified as Carlos Cetina wrote on
OK. Gracias. Feliz Navidad!
Carlos Cetina Verified as Carlos Cetina wrote on
Welcome back, Joe! Let us follow playing this so interesting game!
Game: Symmetric Chess Log: sissa-cvgameroom-2015-263-645
Carlos Cetina Verified as Carlos Cetina wrote on
OK. Don't worry. Have a nice game!
Game: Universal Chess Log: couriermabovini-cvgameroom-2015-142-524
Carlos Cetina Verified as Carlos Cetina wrote on
White's 1st move is illegal since the War Elephant does not leap.
Game: Universal Chess Log: couriermabovini-cvgameroom-2015-142-525
Carlos Cetina Verified as Carlos Cetina wrote on
White's 1st move is illegal since the War Elephant does not leap.
Game: Camelrider Chess Log: avunjahei-cvgameroom-2015-102-657
Carlos Cetina Verified as Carlos Cetina wrote on
What about to try Camelrider's Quadriga Chess?

If anyone is interested, the preset can be accessed here.

Game: Coherent Chess Log: sissa-cvgameroom-2015-97-664
Carlos Cetina Verified as Carlos Cetina wrote on
Sorry by the confusion, I was only suggesting a 2nd version of this variant. Dragon Horse is a shogi piece that moves like bishop or wazir.

If you like to try Coherent Chess 2, the preset can be accessed here.

Of course, I'm willing to play both versions at the same time!

Carlos Cetina Verified as Carlos Cetina wrote on
OK. Let's apply it, if you like.

In order to make the gameplay a bit more dynamic, guards could be replaced by sliding generals while bishops replaced by dragon horses.

Carlos Cetina Verified as Carlos Cetina wrote on
Thanks. I appreciate your concepts and agree with them largely but what happened was that the basic idea was not exactly to create a game that were fun nor was born from the express wish to design a chess variant. I hope to tell the full story of its genesis some day. Meanwhile, let's explore here how to improve it. What do you think if guards would promote to sliding generals [Joe Joyce's name for the piece that is a combination of 2 guards; it slides 1 or 2 squares; it may not jump; it may change direction during its move; it may not make a null move (move off and then back onto its starting square); it captures by landing directly on an opposing piece and ending its turn] once they cross the middle row and enter the enemy territory? Another possibility is that they promote to sissas instead of to sliding generals.
Game: KnightZz Log: sissa-judgmentality-2015-77-802
Carlos Cetina Verified as Carlos Cetina wrote on
Sure... thanks!
Game: UC-170-13 Log: judgmentality-sissa-2014-314-037
Carlos Cetina Verified as Carlos Cetina wrote on
This kind of problems can be solved easily by applying the Pregame Rule. Why you are reluctant to implement it?
Game: Cetran Chess 2 Log: sagig72-joejoyce-2014-234-175
Carlos Cetina Verified as Carlos Cetina wrote on
Sagi: 16.DH d3-b4 was illegal. Please rectify it.
Game: Nachtmahr Log: sissa-judgmentality-2009-307-856
Carlos Cetina Verified as Carlos Cetina wrote on
Thanks! Well, it seems that what you say is true. Better luck with Knightage!
Game: Nachtmahr Log: sissa-judgmentality-2009-306-803
Carlos Cetina Verified as Carlos Cetina wrote on
Diagram can be seen only in the Kibbitz Listing page not in the log game.
Carlos Cetina Verified as Carlos Cetina wrote on
The 3,4 trajectory would not be generated by any successive knight leaps but by alternating knight-camel jumps, so the label for that rider could be NCNC. How woud you name it?

The following diagram shows all possible routes the quintessence may run starting from r18:

We can see that there are 8 'pure' and 8 'impure' trajectories. The first are indicated by guards of a same color. The second by a mix of guards and wazirs. For example, the guard-wazir-yellow path starts from r18 then follows by GU_r s20 - GU_y q21 - W r23 - GU_y p24 - W_y q26 - GU_y o27 etc. Note that white wazirs are a sort of hinges.

What do you mean for 'more limited quintessences'? Would the above two classes fit in the idea you have in mind?

Game: Nachtmahr Log: judgmentality-sissa-2009-209-125
Carlos Cetina Verified as Carlos Cetina wrote on
True, we both overlooked said check but the nn was not double attacked after e3-e4 because the rose could not reach d1 from e7 since its right route is e7-f5-e3-c2-a3.
Game: Cetran Chess 2 Log: sissa-joejoyce-2014-234-175
Carlos Cetina Verified as Carlos Cetina wrote on
Thanks!
Game: Cetran Chess 2 Log: leopold_stotch-sissa-2012-340-102
Carlos Cetina Verified as Carlos Cetina wrote on
Yes, 48.b6 is the appropriate move. Since white has a material advantage of 2 units, playing rightly he should win easily. 48...axb6 is forced and, after 49.Nxb6, white should try to promote the a-pawn combined with tactical threats to the black king. This game, despite some oversights by both sides, has a remarkable educational value because you can learn how to maneuver the sissa and take advantage of its peculiar way of movement. Let's see how black loses immediately if he refuses to exchange pawns at turn 48th. Hereinbelow I will use the well-known algebraic notation. 48...Sxa4 49.bxa7 Sa6 (a4-c6-a6) The black sissa menaces to capture the a7-pawn and keeps off it promotes. With a beautiful sequence of 3 checks, white forces the promotion. 50.Se7+ Kh8 (unique; h7 is covered by the white sissa via e7-h4-h7) 51.Sxf7+ Kg8 (unique) 52.Sg5+ (g5-d8-g8) Now, if 52...Kh8, then 53.a8=Q+ Sxa8 54.Sxa8 (g5-d8-a8) or 52... Se8 [(a6-c8-e8) obstructing the check but allowing the promotion] 53.a8=Q, etc.
Game: Cetran Chess 2 Log: sissa-leopold_stotch-2012-208-813
Carlos Cetina Verified as Carlos Cetina wrote on
If the preset would have enforced the rules, we would not be talking about the oversights at moving the sissa. I should have announced check when moved 21.S c5xe6; neither Jochen nor me saw this and therefore 21... c b6xc4 22.Q d2-f2 c c4-c6 were illegal. Black should announce check on turn 34... s e8-a6. I do not remember whether I saw it or not, but the fact is that 35.R c5-b5+ was a fortunate move blocking said check and at the same time checking the black king. Answering your question, Jeremy: yes, black could/should exploit the pinning of the white rook by moving 37... c7-c6 instead of 37... r d8-e8, winning the rook. Also on turn 39... p c7-c6, instead of 39... S a6-a3+, would have forked both rook and sissa.
Game: Cetran Chess 2 Log: leopold_stotch-sissa-2012-340-102
Carlos Cetina Verified as Carlos Cetina wrote on
I don't think so. If 47.S e5xa7, then 47... s c2xc5 (c2-f2-c5), losing the knight without any compensation.
Game: Cetran Chess 2 Log: sissa-leopold_stotch-2012-147-825
Carlos Cetina Verified as Carlos Cetina wrote on
No, Black is not worse off here. After 11... p b7xa6 12.DH g2xa8 s f8xa8 (f8-f3-a8), he could continue fighting and even win the game. Many of the games I played with Jochen were under blitz timing, hence they have many oversights like this.
Game: Cetran Chess 2 Log: maeko-makov333-2009-139-899
Carlos Cetina Verified as Carlos Cetina wrote on
True. He still is in check at the same time by three paths: d4-f4-d2 / d4-f2-d2 / d4-b4-d2. Since there is no piece that could block them, the king should move to c1 or e1. When I congratulated Vitya, did not revise the entire game move by move and hence missed such a detail that happened at turn 33 not 31.
Game: Cetran Chess 2 Log: sissa-makov333-2009-177-738
Carlos Cetina Verified as Carlos Cetina wrote on
It's quite legal. The route is b5-f5-b1. Note that it's not check since a2 and b2 are occupied.
Game: Cetran Chess 2 Log: sissa-shatteredglass-2014-8-981
Carlos Cetina Verified as Carlos Cetina wrote on
Cameron:

Quoting you.

'I'd be curious to hear any thoughts/analysis you might have for the CC2 game that we recently finished (about 4 weeks ago). It was quite a long game, and a lot happened in it. I already mentioned the blunder at move 43 as the last opportunity that I missed, but I'm sure I misplayed some earlier positions as well. It took far too long for me to complete development (the Black queen was a particularly useless, passive piece), and by the time I came close to doing so, there were too many threats piling up, leading to an unpleasant, defensive position.' [shatteredglass-sissa-2014-185-035]

'I really cannot say enough about the sheer diversity that is added to this game by the randomized and asymmetrical opening setups, combined with having 7 distinct major pieces. Each game seems to have its own unique 'feel', which is especially pronounced in the opening and early middlegame but continues to influence the strategies of both sides as the game progresses.' [sissa-shatteredglass-2013-355-674]

Peculiarities of this variant you point out determine that some basic notions of chess [like development of pieces] are not fully applicable here. From the first move players face the enormous challenge of finding the best strategic plan, and move after move they are the architect of their own destiny. So, I don't think the Blue queen was a particularly useless, passive piece.

In general, the game elapse more or less equaled until 28... p d6-d5? that cost to Blue one pawn. It was better 28... p h7-h5.

Another history would have been after 43... a c5-a3 44.C h1-d1 p h7-h6 45.K e2-f2 r a8-a6 46.R b6xa6 c c7xa6 47.K f2-g3 a a3xc4 48.P d3xc4+ c a6-d6, etc.

After 1.P b2-b3, Blue could have chosen a different strategic plan by moving 1... p e7-e6, with the idea of replying 2.DH c1-b2 dh d8-f6 or 2.DH c1-a3+ dh d8-e7.

Game: Cetran Chess 2 Log: sissa-leopold_stotch-2012-162-809
Carlos Cetina Verified as Carlos Cetina wrote on

White to move.

The rook on d2 is obstructing the sissa's checking path d1-d4-a1. It is SEMI pinned. Rg2, Rf2, Re2 and Rc2 are illegal moves; but Rb2, Rd3 and Rd4 are legal since the rook itself obstructs the checking path. On the d column the illegality begins at d5 and follows to d6 and d7.

Might White make Rxd8+? Is the movement of the pieces on the board an untimed, instantaneous action? Or like in the real world they spend some time to go from one another square?

The position is taken from this game: sissa-judgmentality-2009-182-888

Game: Hexcetran Log: sissa-makov333-2010-111-006
Carlos Cetina Verified as Carlos Cetina wrote on
Instead of 'outward' I mean 'forward'.

Aanca's legal moves from f6:
1)f6-f7-g8-h9
2)f6-f7-e9-d11
3)f6-g6-i5-k4
4)f6-g6-h7-i8
5)f6-g5-i4-k3
6)f6-g5-h3-i1
7)f6-f5-e4-d3
8)f6-f5-g3-h1
9)f6-e6-c7-a8
10)f6-e6-d5-c4
11)f6-e7-d9-c11
12)f6-e7-c8-a9

Gryphon's legal moves from f6:
1)f6-g7-h7-i7-j7
2)f6-g7-g8-g9-g10
3)f6-h5-i4-j3-k2
4)f6-h5-i5-j5-k5
5)f6-g4-h3-i2-j1
6)f6-g4-g3-g2-g1
7)f6-e5-e4-e3-e2
8)f6-e5-d5-c5-b5
9)f6-d7-c8-b9-a10
10f6-d7-c7-b7-a7
11)f6-e8-e9-e10-e11
12)f6-e8-d9-c10-b11

Game: Universal Chess Log: judgmentality-maeko-2009-284-465
Carlos Cetina Verified as Carlos Cetina wrote on
4. ... Lf5? 5.R*xf5 [b1-a3-b5-d6-f5] L = lion R* = rose
Game: Universal Chess Log: judgmentality-makov333-2009-248-434
Carlos Cetina Verified as Carlos Cetina wrote on

Jeremy: I have continued thinking on drops subject and believe it is perfectly possible that Black maintains the option of making not only the first but every.

What we need is to establish the drop order of both players with a dephasing of one turn between them, something like this:

Black's:

1st at any turn between 6 and 10 (including 6 and 10)
2nd at any turn between 11 and 15 (including 11 and 15)
3rd at any turn between 16 and 20 (including 16 and 20)
and so on.

White's;

1st at any turn between 7 and 11 (including 7 and 11)
2nd at any turn between 12 and 16 (including 12 and 16)
3rd at any turn between 17 and 21 (including 17 and 21)
and so on.

Everything is possible in this beautiful world!

Regarding castling, I maintain my initial proposal:

- If the king falls on the corners, there is no need of any castling;
- If he falls on b1/b8 or g1/g8, then the king would remain there and the piece on the nearest corner to him would leap to c1/c8 or f1/f8.
- If he falls on c1/c8 or f1/f8, then the king would remain there and the piece on the nearest corner would leap to d1/d8 or e1/e8.
- Finally, if he falls on d1/d8 or e1/e8, castling would be similar to FIDE's. But in this case he could castle with the piece placed at either corner by walking two steps towards the respective piece, and then this piece leaping the king to the adjacent square; exactly as in FIDE chess happens.
Carlos Cetina Verified as Carlos Cetina wrote on
The answer to your question, Jeremy, is YES. Your Spotted Gryphon on g8 is certainly attaking to White's knight/wazir [provided that h5 be empty]. But be carefully with the 'matter of definition': the Spotted Gryphon IS NOT a slider; after its first step like ferz it can follow leaping pieces like DABABA-RIDER. Remember that dragon icon represents in this variant to Paulowich's 'chainsaw' = rook + spotted gryphon. I see you and Vitya are applying the new two rules suggested by you. See Vitya already have castling, but Black should have started the drops. What happened there? :-D
Game: Cetran Chess 2 Log: maeko-makov333-2009-139-899
Carlos Cetina Verified as Carlos Cetina wrote on
Vitya: Congratulations! Nicely done! Nicholas: Sorry for your defeat. Better luck next time!
Game: Universal Chess Log: maeko-makov333-2009-88-750
Carlos Cetina Verified as Carlos Cetina wrote on
Nick, Vitya, Be careful with the turns numeration that is altered/displaced in two units; that is, the last move made by White [14.A c1-h6] really corresponds to the 12th turn. By other part, the rules allow to do two drops followed if they are done in turns 10-11, 15-16, 20-21, and so on.