Study 9H01   Main

Throw-In

by Richard Pavlicek

A throw-in is the concession of a trick, usually deliberate, for strategic gain. Typically the opponent thrown in is forced to lead from an honor at the cost of a trick, or provide an entry that you lack to the hand opposite. This category includes plain throw-ins only; no squeeze element exists (except the unique one-suit squeeze) and no trump suit is involved. About the Techniques

1. Establishment or stepping-stone

NT win 1 auto bi	3 A — —			Trick 1 S	Lead 2!	2nd	3rd	4th
A J — — —			Q K — —
South leads	K 2 — — —

2. Finesse throw-in

NT win 2 auto bi	A J 10 — — —			Trick 1 S	Lead 2	2nd 6	3rd 10!	4th Q
8 7 6 — — —			K Q 9 — — —
South leads	4 3 2 — — —

3. Forced duck finesse throw-in

NT win 3 bi	3 2 Q 3 — —			Trick 1 S 2 E 3 N	Lead K! 4 2	2nd 10 2 J	3rd 3 J Q	4th A Q
10 9 J 10 — —			K J A 4 — —
South leads	A Q K 2 — —

4. Strip finesse throw-in

NT win 2 auto bi	K 10 5 2 — —			Trick 1 S 2 S	Lead A! 2	2nd 4 8	3rd 2 10!	4th 3 J
Q 9 8 4 — —			A J 7 3 — —
South leads	4 3 2 A — —

Any throw-in may require strip maneuver prior.

5. Duck strip finesse throw-in

NT win 3 bi	4 3 K 4 3 — —			Trick 1 S 2 W 3 S 4 E	Lead 2! K 2 9	2nd J 4 7 10	3rd 3 10 K	4th 9 A A
K Q J 8 7 — —			10 9 A J 9 — —
South leads	A 2 Q 10 2 — —

6. Duck strip combined finesse throw-in

NT win 3 auto? bi	5 4 A J 10 — —			Trick 1 S 2 E 3 S	Lead 2! 9 2	2nd 10 A	3rd 4 Q	4th J 5
K Q 10 Q 4 — —			J 9 K 9 8 — —
South leads	A 3 2 3 2 — —

7. Deep finesse throw-in

NT win 2 auto	A Q 9 — — —			Trick 1 S	Lead 2	2nd 6	3rd 9!	4th 10
J 7 6 — — —			K 10 8 — — —
South leads	4 3 2 — — —

8. Duck throw-in

NT win 2 auto bi	A Q 5 — — —			Trick 1 S	Lead 2	2nd 9	3rd 5!	4th 10
9 8 7 — — —			K J 10 — — —
South leads	4 3 2 — — —

9. Repeat duck throw-in

NT win 2	A 10 5 4 — — —			Trick 1 S 2 W 3 W	Lead 2 Q 9	2nd K 5! 10	3rd 4! 8	4th 7 3
K Q J 9 — — —			8 7 A K — —
South leads	3 2 3 2 — —

10. Unblock duck throw-in

NT win 2 auto bi	K 9 4 3 — — —			Trick 1 S 2 W	Lead Q! J	2nd A 4!	3rd 3 7	4th 6 2
A J 10 8 — — —			7 6 A K — —
South leads	Q 2 3 2 — —

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11. High throw-in

NT win 1 auto? bi	Q 9 4 — — —			Trick 1 S	Lead 2	2nd 6	3rd Q!	4th K
A 7 6 — — —			K 10 8 — — —
South leads	J 3 2 — — —

12. Duck double throw-in

NT win 2 auto? bi	A 10 4 — — —			Trick 1 S	Lead 2	2nd 7	3rd 4!	4th
K 8 7 — — —			J 9 6 — — —
South leads	Q 3 2 — — —

13. Middle duck throw-in

NT win 1 auto bi	10 4 3 — — —			Trick 1 S	Lead 8!	2nd 9	3rd 3!	4th
A 9 6 — — —			Q J 7 — — —
South leads	K 8 2 — — —

14. Overtake throw-in

NT win 2 auto bi	A Q 9 — — —			Trick 1 S	Lead J	2nd 7	3rd Q!	4th K
7 A K — —			K 10 8 — — —
South leads	J 3 2 — —

With North on lead would be “undertake” throw-in.

15. Unblock throw-in

NT win 2 auto bi	Q 3 2 — —			Trick 1 S	Lead 2	2nd K	3rd Q!	4th 4
K J 9 — — —			5 4 A — —
South leads	A 10 2 — — —

16. Squash throw-in

NT win 2 auto bi	4 3 2 — — —			Trick 1 S	Lead Q!	2nd K	3rd 2	4th 10
K J 8 — — —			10 A K — —
South leads	A Q 9 — — —

17. Repeat throw-in

NT win 3 auto bi	A J 10 8 6 — — —			Trick 1 S 2 E 3 N	Lead 2 5 8!	2nd 4 3 9	3rd J! J 2	4th Q 6 Q
4 A K Q J — —			K Q 9 7 5 — — —
South leads	3 2 4 3 2 — —

18. Two-suit throw-in

NT win 2 auto bi	A Q 2 — —			Trick 1 S	Lead 3!	2nd 4	3rd 2	4th A
10 9 4 — —			K J A — —
South leads	3 2 3 — —

19. Preparatory finesse two-suit throw-in

NT win 3	A 9 3 3 — —			Trick 1 S 2 N	Lead Q! 3!	2nd K K	3rd A 2	4th 4 A
K 8 6 A — —			10 5 4 K — —
South leads	Q J 7 2 — —

Works equally well with A and K switched.

20. Suit freeze throw-in

NT win 3 not?	K 3 2 3 2 — —			Trick 1 W 2 S	Lead Q? Q!	2nd 2!	3rd 5	4th A
Q J 7 A 4 — —			9 6 5 K 5 — —
West leads	A 10 8 Q J — —

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21. Secondary suit freeze throw-in

NT win 3 bi	Q 9 2 3 2 — —			Trick 1 W 2 E 3 S	Lead 10 K 4	2nd Q! A	3rd A 5	4th 6 2
10 8 4 Q 5 — —			A J 3 K 6 — —
West leads	K 7 6 A 4 — —

22. Either-or finesse throw-in

NT win 3	A 9 3 — K —			Trick 1 S 2 S	Lead Q! K!	2nd 5 A	3rd 3 K	4th 7 8
K 6 5 A — —			10 8 7 — A —
South leads	Q J 2 K — —

If West covers Q, East is thrown in with K.

23. Transfer throw-in

NT win 3	A 3 A 3 — —			Trick 1 S 2 N	Lead Q! 3	2nd K J	3rd A 2	4th 10 9
K 9 10 9 — —			J 10 K J — —
South leads	Q 2 Q 2 — —

24. Double throw-in

NT win 2 bi	Q 2 3 — —			Trick 1 S	Lead 2!	2nd A	3rd	4th
J 9 A — —			K 8 K — —
South leads	A 10 2 — —

Works equally well with A and K switched.

25. Sequential throw-in

NT win 2 auto	Q 10 5 4 — — —			Trick 1 S 2 W	Lead K! 9	2nd A 10	3rd 4 J	4th 2 2!
9 8 7 A — —			K J 6 2 — —
South leads	A 3 2 K — —

Play based on assumption that East has K.

26. Repeat throw-in

NT win 3 auto bi	A Q 10 8 2 — —			Trick 1 S 2 E 3 N	Lead K! 7 Q!	2nd 3 2 K	3rd 2 6 3	4th A 8 4
6 6 5 4 3 — —			K J 9 7 A — —
South leads	5 4 3 2 K — —

27. Winkle throw-in

NT win 2 auto bi	K 10 3 — — —			Trick 1 S	Lead 2!	2nd Q	3rd 3!	4th
Q K J — —			A J 9 — — —
South leads	2 A Q — —

28. Decision throw-in

NT win 2 auto bi	A 10 3 — — —			Trick 1 S	Lead Q!	2nd 4	3rd 3	4th K
5 4 A — —			K J 9 — — —
South leads	Q 2 K — —

If you thought West had K, lead K instead.

29. Penultimate throw-in

NT win 4 bi	Q 4 A K 3 — —			Trick 1 S 2 N	Lead 2! 3!	2nd 4 9	3rd K J	4th 8 Q
K J 10 Q 4 — —			6 5 10 9 8 — —
South leads	A 3 2 J 2 — —

If West unblocks, win J then lead a low spade.

30. Jettison throw-in

NT win 2 auto	A — 3 2 —			Trick 1 S	Lead 2	2nd 9	3rd A!	4th A
9 — A K —			Q 10 A — —
South leads	K J 2 — —

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31. Establishment jettison throw-in

NT win 3 auto	A — 4 3 2 —			Trick 1 S	Lead K	2nd 2	3rd A!	4th A
2 — A K Q —			Q 10 9 A — —
South leads	K J K Q — —

32. Establishment repeat jettison throw-in

NT win 3 auto	— K Q K 3 2 —			Trick 1 S 2 S	Lead A J	2nd Q K	3rd Q! K!	4th J
K Q A 10 9 — —			— 4 3 A Q J —
South leads	A J 10 J 2 — —

33. Entry duck throw-in

NT win 2 auto bi	Q 3 2 K 2 — —			Trick 1 S 2 W 3 S	Lead 4! J 3!	2nd Q 2	3rd 2! 7	4th 10 K
J 10 9 Q J — —			A 8 7 A 10 — —
South leads	K 5 4 4 3 — —

34. Entry or tempo gain throw-in

NT win 4 bi	Q 3 3 2 Q J —			Trick 1 S 2 S 3 S	Lead K! A 2	2nd 4 8 9	3rd 3 J Q	4th J 7 K
4 K Q J 9 8 —			A J 5 4 K 7 —
South leads	K 2 A A 10 2 —

35. Establishment or stepping-stone

NT win 4 auto bi	A 10 9 8 7 — — —			Trick 1 S 2 S 3 S 4 S	Lead J! K A 2	2nd 3 4 9	3rd 7 8 9	4th 5 6 Q
4 3 J 10 9 — —			Q 6 5 K Q — —
South leads	K J A 3 2 — —

36. Establishment or winkle

NT win 4 auto bi	A 10 9 8 7 — — —			Trick 1 S 2 S 3 S	Lead J! K 2!	2nd 2 3	3rd 7 8	4th 4 5
3 2 K Q 9 — —			Q 6 5 4 J — —
South leads	K J A 10 2 — —

Also works with spades 3-3 (then hearts 2-2).

37. Forced stepping-stone

NT win 2 auto bi	Q 4 A — —			Trick 1 S	Lead K!	2nd	3rd	4th
J 10 9 — — —			A 5 2 — —
South leads	K 3 2 — — —

38. Blocked stepping-stone

NT win 1 auto bi	4 3 A — —			Trick 1 S	Lead K!	2nd A	3rd 3	4th 8
A Q 9 — — —			J 8 2 — —
South leads	K 10 2 — — —

39. One-suit squeeze throw-in

NT win 2 auto bi	K 9 5 — — 2			Trick 1 S 2 S	Lead A! 2	2nd 3 10	3rd 2 K!	4th J A
10 7 6 — — 3			A Q J 8 — — —
South leads	4 3 2 — — A

40. One-suit squeeze double throw-in

NT win 2 auto bi	A Q 8 — — 2			Trick 1 S 2 W	Lead 3! 9	2nd A 8!	3rd 2 10	4th 7 2
9 6 5 — — A			K J 10 7 — — —
South leads	4 3 2 — — 3

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41. One-suit squeeze block throw-in

NT win 2 auto re	3 2 A — 2			Trick 1 S 2 S	Lead A! K!	2nd J	3rd 2	4th 2
A Q J 8 — — —			10 7 3 2 — —
South leads	K 9 4 — — A

42. Throw-in or strip stepping-stone

NT win 3 auto bi	Q 3 2 A —			Trick 1 S 2 S 3 S	Lead A! A! 3	2nd 10 J	3rd 2 3	4th J 4
K J Q 10 — —			4 K J 2 —
South leads	A 2 A 3 — —

If East unblocks K West is thrown in at Trick 2.

43. Finesse-duck throw-in or throw-in

NT win 3 auto	A J 2 K 5 — —			Trick 1 S	Lead A!	2nd	3rd	4th
K Q 10 — K 3 —			— A Q J Q 4 —
South leads	4 3 2 A J —

Auto status presumes you know spade/heart layout.

44. Establishment or double throw-in

NT win 4 auto bi	A Q J 10 2 — —			Trick 1 S 2 N 3 S	Lead 2 2 10!	2nd 6 K	3rd Q A	4th 4 3
6 Q 5 4 3 — —			K 5 4 K J — —
South leads	3 2 A 10 9 — —

45. Exit retention duck double throw-in

NT win 2 auto bi	K 4 J 7 2 — —			Trick 1 S 2 W 3 S	Lead 2! 10 3!	2nd J J	3rd 4! Q	4th 10 A
Q J K 10 6 — —			A 10 Q 8 4 — —
South leads	3 2 A 9 3 — —

46. Sequential three-suit throw-in

NT win 3 bi	A 3 2 2 2 —			Trick 1 S 2 E 3 S	Lead K! 6 K!	2nd 3 9 A	3rd 2 4 2	4th A 2 7
K 5 4 3 A —			J 8 7 6 A — —
South leads	Q 10 9 K K —

Note that leading K first fails.

47. Tempo duck one-suit squeeze throw-in

NT win 2 bi	6 5 4 3 2 — —			Trick 1 S 2 W 3 S	Lead 3! K K!	2nd 10 3	3rd 2 J	4th 7 A
10 K Q J 10 — —			A Q J 8 7 — — —
South leads	K 9 2 A 3 — —

48. Entry, stepping-stone or throw-in

NT win 4 auto bi	J 3 A K Q — —			Trick 1 S 2 S 3 S	Lead Q! A! 2!	2nd 4 5	3rd 3 J	4th 10 K
8 6 5 4 — A —			K 10 2 3 2 — —
South leads	A Q 9 7 — 2 —

49. Repeat unblock double throw-in

NT win 3 auto	10 9 3 K 3 — —			Trick 1 S 2 S 3 W	Lead A! 2! Q	2nd 2 Q 3!	3rd 9! 10!	4th 9 J
K Q 7 Q 2 —			J A J 10 9 — —
South leads	A 8 2 2 A —

50. Penultimate throw-in anti one-suit squeeze

NT win 4 auto bi	A Q J 8 2 — —			Trick 1 S	Lead J!	2nd 3	3rd 2	4th Q
7 6 5 4 3 — — —			K 9 2 K Q — —
South leads	10 A J 10 9 — —

51. Repeat jettison throw-in

NT win 4	K 3 2 A — A			Trick 1 S 2 S	Lead A Q	2nd 2 K	3rd A! A!	4th 3 Q
— 9 8 7 2 K			A Q Q 6 3 —
South leads	— K J 10 A Q

52. Winkle jettison throw-in

NT win 2	K 3 2 — A —			Trick 1 S 2 W	Lead 2 K	2nd A 2	3rd A! J	4th K 2
— A J 9 K —			A Q J K — —
South leads	— Q 10 2 2 —

If West plays 9 or J North keeps A.

53. Gambit unblock throw-in

NT win 4 bi	K 2 — 4 3 2 —			Trick 1 S 2 S	Lead A 3	2nd J Q	3rd K! 2	4th 10 K
Q J 9 8 7 — —			10 K J A K —
South leads	A 3 A Q 10 — —

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Anti throw-in

54. Duck anti throw-in

NT win 2 auto bi	9 4 3 — — —			Trick 1 W	Lead 7	2nd 3	3rd Q	4th 2!
10 8 7 — — —			K Q 6 — — —
West leads	A J 2 — — —

55. Second-hand high anti throw-in

NT win 3 bi	J 3 2 — — —			Trick 1 W	Lead 7	2nd J!	3rd	4th
9 8 7 — — —			K 5 4 — — —
West leads	A Q 10 — — —

56. Second-hand middle anti throw-in

NT win 3 bi	Q 9 6 — — —			Trick 1 W	Lead 2	2nd 9!	3rd	4th
10 3 2 — — —			K 5 4 — — —
West leads	A J 8 — — —

Queen necessary if South had A-J-10 but unlikely.

57. Unblock anti throw-in

NT win 3 bi	Q 3 3 2 — —			Trick 1 W	Lead J	2nd 3	3rd A	4th K!
J 10 5 4 — —			A 9 K 7 — —
West leads	K 2 A Q — —

58. Crocodile anti throw-in

NT win 3 auto bi	Q J K J 4 — —			Trick 1 W 2 E	Lead 7 5	2nd Q K!	3rd A	4th 2
9 8 7 Q 6 — —			A 6 5 A 5 — —
West leads	K 10 2 3 2 — —

Assumes West is dummy to be meaningful.

59. Anti finesse exit anti throw-in

NT win 2 auto? bi	2 J 4 3 — —			Trick 1 W 2 S	Lead 4 Q!	2nd 2	3rd 3	4th A
4 A 10 8 — —			3 K 7 6 — —
West leads	A Q 9 2 — —

60. Unblock gambit anti throw-in

NT win 3 bi	5 4 3 3 2 — —			Trick 1 W 2 E	Lead Q 9	2nd 3 2	3rd A J	4th K! 4
Q J 6 5 4 — —			A 10 9 K 7 — —
West leads	K 2 A Q J — —

61. Exit retention anti throw-in

NT win 2 bi	2 K J A K —			Trick 1 S 2 E 3 E 4 S	Lead 7! A Q 2	2nd 3 8 K	3rd 2 J Q	4th 10 K A
3 A Q Q J —			A Q J 10 3 — —
South leads	K 9 8 7 2 — —

62. Duck gambit anti entry throw-in

NT win 3 auto	K Q 6 5 4 — — —			Trick 1 W	Lead J	2nd 4!	3rd 8	4th 2
A J 7 K 2 — —			10 9 8 4 3 — —
West leads	3 2 A Q J — —

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© 2014 Richard Pavlicek