B. Two Chariots and Two Horses Class, Game 04

"B. Two Chariots and Two Horses Class, Game 04" is a Xiangqi (Chinese Chess) puzzle from the collection Chariot & Horse mates. Red moves first and wins in 6 moves; the key first move is R4+5. Below you will find the full solution, what each move achieves, where it could go wrong, and the alternative defences.

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Pieces on the board

Red has a General, 2 Elephants, 2 Chariots, 2 Horses. Black has a General, 2 Advisors, a Elephant, 2 Chariots, a Cannon.

Solution move by move

1. Red R4+5 (captures the Advisor, check, sacrifices the Chariot, threatens mate next move, the only legal reply, the General has no escape square)
Why it works
Forcing: the opponent has only one reply, so the line cannot be avoided.
Wins material: takes the Advisor.
Creates an immediate mating threat that must be answered.
Takes away the General's escape squares.
What to watch out for
Gives up the Chariot; the follow-up must be exact or the sacrifice is wasted.
1. Black A5-6 (captures the Chariot, threatens mate next move)
1. Black A5-6
2. Red H5+7 (check, threatens mate next move, the only legal reply)
Why it works
Forcing: the opponent has only one reply, so the line cannot be avoided.
Creates an immediate mating threat that must be answered.
What to watch out forNo real drawback in this position.
2. Black K4=5 (threatens mate next move)
2. Black K4=5
3. Red R3=5 (check, threatens mate next move, the General has no escape square)
Why it works
Creates an immediate mating threat that must be answered.
Takes away the General's escape squares.
What to watch out forNo real drawback in this position.
3. Black A6+5 (threatens mate next move)
3. Black A6+5
4. Red R5+2 (captures the Advisor, check, the only legal reply)
Why it works
Forcing: the opponent has only one reply, so the line cannot be avoided.
Wins material: takes the Advisor.
What to watch out forNo real drawback in this position.
4. Black K5=6 (threatens mate next move)
4. Black K5=6
5. Red R5=3 (check, the only legal reply)
Why it works
Forcing: the opponent has only one reply, so the line cannot be avoided.
What to watch out forNo real drawback in this position.
5. Black K6=5 (threatens mate next move)
5. Black K6=5
6. Red R3+1 (checkmate)
Why it works
Ends the game: no legal reply remains.
What to watch out forNo real drawback in this position.
6. Red R3+1

Variations and alternative defences

What if Black defends differently? The alternatives below were checked with the rules engine; lines marked with a mating move lose at once, the others are worth trying on the analysis board.

3. Black A6+5
- If Black plays E3-5 instead: Red mates immediately with H6-4. Try it on the board

Final position

Red wins after 6 moves. The General has no legal move.

Questions about this puzzle

Who moves first in "B. Two Chariots and Two Horses Class, Game 04"?

Red moves first, as in every puzzle of Chariot & Horse mates.

How many moves does the solution take?

6 moves. The main line is shown above; alternative defences are covered in the variations section.

What is the key move?

The first move R4+5 starts the combination. Everything that follows depends on it.

Can I play this position myself?

Yes. Open it on ChessZing, where the board checks your moves and shows the solution if you get stuck.

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