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        riddles >> medium >> Chinese Chess Problem
        
(Message started by: william wu on Oct 27^th, 2008, 11:18am)

Title: Chinese Chess Problem
Post by william wu on Oct 27^th, 2008, 11:18am

(for the chinese chess players out there)

Red to move and checkmate.

Title: Re: Chinese Chess Problem
Post by Hippo on Oct 27^th, 2008, 1:33pm

If it would be black plays and mates, it would be g1xf1.
(I have read the rules just now ...).

So what red can do ... if there wouln't be the cannon at g9 :( the a8 f8 mates ...
1: a8 f8 ... f7 f8
2. g9 g2 ... f8 f7
3. g2 e[edit]f typo correced[/edit]2 ... horse somewhere
4. d3 e3 mate ?

Title: Re: Chinese Chess Problem
Post by SMQ on Oct 27^th, 2008, 6:21pm

That's not quite going to work, Hippo (black horse to rank 4 on move 3 takes chariot on rank 2 on move 4 resolving check), but I think you're essentially on the right track. Sticking with the western notation, I think this works:

1. a9-f9+! f8xf9
2. g10-g5+ f9-f8
3. g5-f5+ g6-xx
4. e3-f3++

If I'm understanding the notation section of the Wikipedia entry (http://en.wikipedia.org/wiki/Xiangqi#Notation), that would more properly be:

1. R9.4! G6-1
2. C3-5 G6+1
3. C3.4 H6http://www.ocf.berkeley.edu/~wwu/YaBBImages/symbols/pm.gifx
4. C5.4

--SMQ

Title: Re: Chinese Chess Problem
Post by william wu on Oct 27^th, 2008, 7:54pm

Yup! Nice job.

Title: Re: Chinese Chess Problem
Post by Hippo on Nov 2^nd, 2008, 3:22pm

on 10/27/08 at 18:21:44, SMQ wrote:

Oh yes, you are right :) but why is your western notation one higher than my? :) ... I should think about it ;) Oh yes, I have counted from 0 to 9 :)

Title: Re: Chinese Chess Problem
Post by Beginner on Dec 25^th, 2008, 5:29am

Hello All,

Can please someone help me with the below chess problem?

Black to Move, and Mate Red in Three Moves

Title: Re: Chinese Chess Problem
Post by william wu on Sep 13^th, 2009, 5:24am

In response to Beginner:

1. R9-1 (the frontmost chariot goes back one step).

This puts the king in check. The enemy king will not move away from you because if he did that, you can checkmate by moving the cannon C+2. So the enemy king will definitely move toward you.

2. K4.5 (move your own king one step to the left)

The enemy can do whatever he wants now, it does not matter.

3. R5+1 (checkmate)

Why is this checkmate?

a. You attack him with the chariot. The enemy king cannot take your chariot because then your two kings would be looking at each other, which is illegal.

b. The enemy also cannot take your chariot with his elephant because then you could still kill the king by jumping over his elephant using your cannon.