I want to play this Dark Chess mentioned in post #7.
Chess Variant I Have Not Seen
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ponz111 wrote:
Here is another chess variant I have not seen or seen discussed.
both players are in adjacent rooms with their own chess board and pieces.
It is normal chess except the moves are only given to the referee in the middle.
When it is your turn you can make any moive that is not illegal. If you make a check or are in check the referee in the middle annouces "check"
If you make an illegal move you may take it back and make a legal move.
If then you make a 2nd illegal move on the same move
you lose your turn. [sometimes advantageous in a pawn endgame]
If you queen a pawn your opponent is not notified.
This variant is very hard to play...
Dark Chess i will call it. Sounds fun.
If say you have 5 moves as White and you check on the third move then no more moves for you and now Black has his normal 6 moves. and then White 7 moves and so on.
Yes, though I have not played backgammon I think that game has a doubling cube. So it you want to play chess for a small wager - say a dollar a game and have the doubling cube it gets interesting. If you get doubled and say are down a pawn but it is a speed game--often you want to play on.
I showed the two games to a friend who teaches chess to high school kids and he used it with them and they really liked both games. But for regular chess the progressive is more instructive.
I wonder what a computer would think of the progressive game?
ponz111 wrote:
Yes, though I have not played backgammon I think that game has a doubling cube. So it you want to play chess for a small wager - say a dollar a game and have the doubling cube it gets interesting. If you get doubled and say are down a pawn but it is a speed game--often you want to play on.
They have a Chess set that can turn into a backgammon set when you flip it.
LauriAiko not sure I understand your question. if in a series of moves you give check then that ends the series and now it is your opponents turn to play and the very first move he plays he has to get out of check.
You did answer to my question already, David 
If say you have 5 moves as White and you check on the third move then no more moves for you and now Black has his normal 6 moves. and then White 7 moves and so on.
An easy riddle for You. 
ponz111 wrote:
LauriAiko not sure I understand your question. if in a series of moves you give check then that ends the series and now it is your opponents turn to play and the very first move he plays he has to get out of check.
Btw, David, can You say 6 - d = 4 + i
- d = ?????
-(2-i)
Jan 2, 2013
0
#33
aearsley beats ponz
White aearsley Black ponz
1. e3
2. Nh6 d5
3. Qg4 Qxc8 Qxd8+
4. Kxd8 Ng4 Nxf2 Nxh1
5. h4 h5 h6 hxg7 gxh8=queen
6. Kd7 Bg7 Bxh8 Bxb2 Bxc1 Nc6
7. a4 a5 a6 axb7 bxa8=queen Bb5 Bxc6+
8. Kd6 d4 d3 dxc2 cxb1=queen Qb8 Qxa8 Kxc6
9. g4 g5 g6 gxh7 h8=queen Qh5 Ra5 Rb5 Qd5 check and mate
ponz111 wrote:
Here is another chess variant I have not seen or seen discussed.
both players are in adjacent rooms with their own chess board and pieces.
It is normal chess except the moves are only given to the referee in the middle.
When it is your turn you can make any move that is not illegal. If you make a check or are in check the referee in the middle announces "check"
If you make an illegal move you may take it back and make a legal move.
If then you make a 2nd illegal move on the same move
you lose your turn. [sometimes advantageous in a pawn endgame]
If you queen a pawn your opponent is not notified.
This variant is very hard to play...
I belive you are refering to Kriegspiel, sometimes described as a mixture of chess and poker. I have always wanted to play this variant, in A Book of Chess by C.H.O'D. Alexander there is a complete description of this variant and an example game, Alexander also mentions a book of Kriegspiel problems, Are There Any? by G.F. Anderson
Sounds like it could be fun.