KAHLENBERG Howard · KAHLENBERG
236rank
-62.1Butler · 20 bds
-3.10per board
±4.6swing
-2.77adjusted /bd
by round
Strength of schedule: opponents averaged +0.33/bd (a tough draw) → opponent-adjusted -2.77/bd
By role: declaring -2.71/bd (11) · defending -3.59/bd (9)
By vulnerability: not vulnerable -3.10/bd (20)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | D.Morgen | B.Drijver – M.Michielsen | Open | 10 | -37.3 | -3.73 | · |
| Round 2 | D.Morgen | B.Schaffer – L.Feldman | Closed | 10 | -24.8 | -2.48 | · |
Every board — best Butler first↑ top
vs par = IMPs this pair scored above (+) or below (−) the board’s double-dummy par — what bidding and play (theirs and the opponents’) added or gave away against perfect play.
| Butler | Round | Opponents | Bd | Contract | Lead | Res | vs par |
|---|---|---|---|---|---|---|---|
| +3.9 | Round 1 | O'ROURKE | 7 | 5♣ | ♥5 | = | · |
| +3.0 | Round 1 | O'ROURKE | 10 | 5♦x | ♥A | -2 | · |
| +2.1 | Round 2 | FELDMAN | 18 | 2♣ | ♠Q | -3 | · |
| +0.9 | Round 2 | FELDMAN | 19 | 3♠x | ♣K | -2 | · |
| +0.5 | Round 2 | FELDMAN | 17 | 4♥ | ♦Q | = | · |
| +0.2 | Round 2 | FELDMAN | 16 | 3♥ | ♦K | +1 | · |
| -0.5 | Round 2 | FELDMAN | 11 | 3♣ | ♥K | +1 | · |
| -0.7 | Round 1 | O'ROURKE | 1 | 4♥ | ♥4 | = | · |
| -1.2 | Round 1 | O'ROURKE | 2 | 1N | ♦2 | +2 | · |
| -1.8 | Round 2 | FELDMAN | 15 | 3N | ♠5 | -2 | · |
| -2.4 | Round 1 | O'ROURKE | 3 | 2♥ | ♣7 | -1 | · |
| -3.6 | Round 1 | O'ROURKE | 8 | 3♣ | ♥3 | = | · |
| -3.9 | Round 2 | FELDMAN | 20 | 2♥ | ♠4 | +1 | · |
| -4.2 | Round 2 | FELDMAN | 14 | 2♦ | ♠Q | = | · |
| -5.7 | Round 1 | O'ROURKE | 5 | 3♠ | ♥J | -2 | · |
| -8.0 | Round 2 | FELDMAN | 13 | 4♠ | ♣K | -2 | · |
| -8.3 | Round 1 | O'ROURKE | 9 | 6♠ | ♣4 | = | · |
| -8.7 | Round 1 | O'ROURKE | 4 | 6♠ | ♠Q | -1 | · |
| -10.1 | Round 2 | FELDMAN | 12 | 6♥ | ♠A | -1 | · |
| -13.6 | Round 1 | O'ROURKE | 6 | 3N | ♥3 | = | · |