Chariot and Horse on One Line

"Chariot and Horse on One Line" is a Xiangqi (Chinese Chess) puzzle from the collection Chariot & Horse mates. Red moves first and wins in 19 moves; the key first move is R8+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, a Horse. Black has a General, a Chariot, 2 Soldiers.

Solution move by move

1. Red R8+5 (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 21 replies, so compare each one before playing it.
1. Black K4+1
1. Black K4+1
2. Red H7-8 (check)
2. Black K4=5
2. Black K4=5
3. Red H8-6 (check)
3. Black K5=4
3. Black K5=4
4. Red H6+4 (check)
4. Black K4=5
4. Black K4=5
5. Red H4+3 (check)
5. Black K5=4
5. Black K5=4
6. Red R8-5 (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 21 replies, so compare each one before playing it.
6. Black K4+1
6. Black K4+1
7. Red H3-4 (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 20 replies, so compare each one before playing it.
7. Black K4=5
7. Black K4=5
8. Red R8=5 (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.
8. Black K5=4
8. Black K5=4
9. Red R5+4 (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 19 replies, so compare each one before playing it.
9. Black R8+1 (check, threatens mate next move, the only legal reply)
9. Black R8+1
10. Red K4+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 23 replies, so compare each one before playing it.
10. Black R8-1 (check)
10. Black R8-1
11. Red K4-1 (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 19 replies, so compare each one before playing it.
11. Black R8+1 (check, threatens mate next move, the only legal reply)
11. Black R8+1
12. Red K4+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 23 replies, so compare each one before playing it.
12. Black R8-5 (threatens mate next move)
12. Black R8-5
13. Red H4-5 (check, sacrifices the Horse, 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.
Takes away the General's escape squares.
What to watch out for
Gives up the Horse; the follow-up must be exact or the sacrifice is wasted.
13. Black R8=5 (captures the Horse, threatens mate next move)
13. Black R8=5
14. Red R5-3 (captures the Chariot)
Why it works
Wins material: takes the Chariot.
What to watch out for
Not forcing: the defender has 7 replies, so compare each one before playing it.
14. Black P7+1
14. Black P7+1
15. Red K4-1
Why it works–
What to watch out for
Not forcing: the defender has 7 replies, so compare each one before playing it.
15. Black P7=6
15. Black P7=6
16. Red K4=5 (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 7 replies, so compare each one before playing it.
16. Black P4+1 (check, threatens mate next move)
16. Black P4+1
17. Red K5+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.
17. Black P6=5 (check)
17. Black P6=5
18. Red R5-3 (captures the Soldier, threatens mate next move)
Why it works
Wins material: takes the Soldier.
Creates an immediate mating threat that must be answered.
What to watch out forNo real drawback in this position.
18. Black P4=3
18. Black P4=3
19. Red R5=6 (checkmate)
Why it works
Ends the game: no legal reply remains.
What to watch out forNo real drawback in this position.
19. Red R5=6

Variations and alternative defences

The source manual records 4 variations. Each branch starts from the move number shown.

Variation 1, from move 2: K4+1 3. R8=4 R8-6 4. R4-3 K4=5 5. R4=5+ K5=4 6. H8+7+ K4-1 7. R5=6+ Try it on the board
Variation 2, from move 3: K4=5 4. R4-2+ K5-1 5. H8+7+ K5=4 6. R4=6# Try it on the board
Variation 3, from move 3: 3. R8=6+ K4=5 4. R6=5+ K5=4 5. H8+7+ K4-1 6. R5-1+ K4-1 7. H7-6 Try it on the board
Variation 4, from move 1: K4=5 2. H7-8+ K5+1 3. H8-6+ Try it on the board

Final position

Red wins after 19 moves. The General has no legal move.

Questions about this puzzle

Who moves first in "Chariot and Horse on One Line"?

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

How many moves does the solution take?

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

What is the key move?

The first move R8+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.

← Previous puzzle: Precious Horse and Fragrant Chariot Next puzzle: Advance and Retreat with Measure →

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