42. Red's River-Patrol Cannon (1)

"42. Red's River-Patrol Cannon (1)" is a opening record from Same-direction Cannons, 18 moves long. The move list below marks every check and capture, and the variations from the source book are listed after it.

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Pieces on the board

Red has a General, 2 Advisors, 2 Elephants, 2 Chariots, 2 Horses, 2 Cannons, 5 Soldiers. Black has a General, 2 Advisors, 2 Elephants, 2 Chariots, 2 Horses, 2 Cannons, 5 Soldiers.

Move list

1.	C2=5	C8=5
2.	H2+3	H8+7
3.	R1=2	R9+1
4.	H8+7	R9=4
5.	P3+1	H2+3
6.	P7+1	R1+1
7.	C8+2	R4+5
8.	E7+9	P3+1
9.	P7+1 ×Soldier	R4=3
10.	C8=7	R3+1 ×Horse
11.	C7+3 ×Horse	R3-3 ×Soldier
12.	C7=3 ×Horse	C2=7 ×Cannon
13.	C5+4+ ×Soldier	A4+5
14.	R9=7	R3+5 ×Chariot
15.	E9-7 ×Chariot	R1=4
16.	E3+5	R4+2
17.	C5-2	K5=4
18.	A4+5	P7+1

Final position

10 moves

18 moves

Variations and alternative defences

The source manual records 6 variations. Each branch starts from the move number shown.

Variation 1, from move 14: R1=3 15. E3+5 +R+5 16. E9-7 R3+2 17. C5-2 P7+1 18. R2+7 Try it on the board
Variation 2, from move 8: P5+1 9. A6+5 R1=6 10. H3+4 P5+1 11. C8=5+ A6+5 12. H4+3 R6+2 13. -C=3 R4=3 14. R9=7 C2+4 15. E3+5 C2=5 16. R2+3 +C=7 17. H7-6 R3=5 18. P3+1 R5-1 19. R2=3 H7+5 20. P3=4 R6+1 21. H3+5 E7+5 Try it on the board
Variation 3, from move 18: 18. P7+1 R5-1 19. R2=3 R6=7 20. R3=6 R7=6 21. C3+5 R5=6 Try it on the board
Variation 4, from move 17: R3+3 18. E9-7 C7-3 19. R2+3 Try it on the board
Variation 5, from move 10: R4=3 11. C5=4 R6=4 12. R9=7 Try it on the board
Variation 6, from move 8: R1=6 9. H3+4 R4=3 10. R9=7 P3+1 11. C5=4 C5=6 12. H4-5 C6+7 13. R2+2 R3=2 14. P7+1 C6-1 15. R7+1 Try it on the board

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