No. 10: Lone Chariot Draws by Rule vs Cannon and Two Elephants

No. 10: Lone Chariot Draws by Rule vs Cannon and Two Elephants楚河 漢界帥象將俥象砲

"No. 10: Lone Chariot Draws by Rule vs Cannon and Two Elephants" is a Xiangqi (Chinese Chess) puzzle from the collection Practical Endgames. Red moves first and wins in 8 moves; the key first move is R7=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, a Chariot. Black has a General, 2 Elephants, a Cannon.

Solution move by move

  1. 1. Red R7=5
    Why it works–
    What to watch out for
    • Not forcing: the defender has 8 replies, so compare each one before playing it.
    1. Black E1+3
    1楚河 漢界帥象將俥象砲
    1. Black E1+3
  2. 2. Red R5+1 (threatens mate next move)
    Why it works
    • Creates an immediate mating threat that must be answered.
    What to watch out for
    • Not forcing: the defender has 6 replies, so compare each one before playing it.
    2. Black K4-1
    2楚河 漢界帥象將象砲俥
    2. Black K4-1
  3. 3. Red R5-4
    Why it works–
    What to watch out for
    • Not forcing: the defender has 9 replies, so compare each one before playing it.
    3. Black +E-1
    3楚河 漢界帥俥象將象砲
    3. Black +E-1
  4. 4. Red R5+2
    Why it works–
    What to watch out for
    • Not forcing: the defender has 6 replies, so compare each one before playing it.
    4. Black E1+3
    4楚河 漢界帥象俥將象砲
    4. Black E1+3
  5. 5. Red R5=2
    Why it works–
    What to watch out for
    • Not forcing: the defender has 8 replies, so compare each one before playing it.
    5. Black +E-1
    5楚河 漢界帥象俥將象砲
    5. Black +E-1
  6. 6. Red R2-2
    Why it works–
    What to watch out for
    • Not forcing: the defender has 7 replies, so compare each one before playing it.
    6. Black K4+1
    6楚河 漢界帥俥象將象砲
    6. Black K4+1
  7. 7. Red R2+2 (check)
    7. Black K4-1
    7楚河 漢界帥象俥將象砲
    7. Black K4-1
  8. 8. Red R2=7
    Why it works–
    What to watch out for
    • Not forcing: the defender has 6 replies, so compare each one before playing it.
    8. Black C4=5
    8楚河 漢界帥象俥將象砲
    8. Black C4=5

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.

Final position

Final position楚河 漢界帥象俥將象砲

The record ends here.

Questions about this puzzle

Who moves first in "No. 10: Lone Chariot Draws by Rule vs Cannon and Two Elephants"?

Red moves first, as in every puzzle of Practical Endgames.

How many moves does the solution take?

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

What is the key move?

The first move R7=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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