Board 8. Dealer West. None Vulnerable.
♥ 7 5
♦ Q 10 6
♣ 3 2
♥ 10
♦ A K 7 3
♣ A K 7 5
♥ A K Q 8
♦ J 8 4
♣ Q J 10 8 4
♥ J 9 6 4 3 2
♦ 9 5 2
♣ 9 6
2007 World Computer-Bridge
Championship
Shanghai, China
October
4-9, 2007
at
the World Bridge Federation's
Bermuda Bowl, Venice Cup & Senior Bowl World Transnational Open Teams
Championships
Congratulations to the 2007 World Computer-Bridge Champion, WBridge5, and to Yves Costel, its developer. WBridge5 defeated Bridge Baron in the final 64-board KO.
WBridge5 shines in slam bidding...from the final match
New York Times bridge column, by Phillip Alder October 25, 2007
Round Robin top four advance to semifinals
Round Robin
32-board Round Robin scored on International
30-VP scale
WBridge5 finished first in the round robin with 143 VPs. Jack was second with 136 VPs, Bridge Baron was third with 128 VPs and Q-Plus, with big wins in the last two matches, finish fourth with 117 VPs.
Final Round Robin standing
|
|
WBridge5 |
Jack |
Bridge Baron |
Q-Plus Bridge |
Micro Bridge |
Shark Bridge |
Robo- Bridge |
TUT Bridge |
Total Position |
|
WBridge5 |
IMPs VPs |
97-40 24-6 |
71-71 15-15 |
64-44 18-12 |
88-53 21-9 |
81-81 15-15 |
144-38 25-0 |
120-45 25-3 |
143 1 |
|
Jack |
40-97 6-24 |
IMPs VPs |
97-29 25-4 |
67-63 16-14 |
87-29 24-6 |
47-16 20-10 |
96-65 20-10 |
148-16 25-0 |
136 2 |
|
Bridge |
71-71 15-15 |
29-97 4-25 |
IMPs VPs |
87-59 19-11 |
57-33 19-11 |
106-71 21-9 |
108-43 25-5 |
103-33 25-4 |
128 3 |
|
Q-Plus Bridge |
44-64 12-18 |
63-67 14-16 |
59-87 11-19 |
IMPs VPs |
52-74 12-18 |
81-64 18-12 |
119-50 25-4 |
117-40 25-3 |
117 4 |
|
Micro Bridge |
53-88 9-21 |
29-87 6-24 |
33-57 11-19 |
74-52 18-12 |
IMPs VPs |
73-41 20-10 |
112-44 25-4 |
88-50 21-9 |
110 5 |
|
Shark Bridge |
81-81 15-15 |
16-47 10-20 |
71-106 9-21 |
64-81 12-18 |
41-73 10-20 |
IMPs VPs |
119-59 25-5 |
133-24 25-0 |
106 6 |
|
RoboBridge |
38-144 0-25 |
65-96 10-20 |
43-108 5-25 |
50-119 4-25 |
44-112 4-25 |
59-119 5-25 |
IMPs VPs |
149-52 25-1 |
53 7 |
|
TUT Bridge |
45-120 3-25 |
16-148 0-25 |
33-103 4-25 |
40-117 3-25 |
50-88 9-21 |
24-133 0-25 |
52-149 1-25 |
IMPs VPs |
20 8 |
An example of questionable bidding and good play occurred when Bridge Baron reached 6NT against Shark bridge in the “robot” World Team Championships. The deal was also played in Round 9 of the “human” World Team Championships.
|
Board 8. Dealer West. None Vulnerable. | ||
| ♠
K Q 8 5 4 2
♥ 7 5 ♦ Q 10 6 ♣ 3 2 | ||
| ♠
A J 7 3
♥ 10 ♦ A K 7 3 ♣ A K 7 5 |
|
♠
6
♥ A K Q 8 ♦ J 8 4 ♣ Q J 10 8 4 |
| ♠
10 9
♥ J 9 6 4 3 2 ♦ 9 5 2 ♣ 9 6 | ||
| West | North | East | South |
| Bridge Baron | Shark Bridge | Bridge Baron | Shark Bridge |
| 1♦ | 2♠ | Dbl | Pass |
| 3NT (18-19) | Pass | 6NT | All Pass |
Bridge Baron’s 3NT bid seems odd, but 3♣ isn’t forcing and 3♠ won’t get them to 3NT when it’s right. East’s should bid 3♣ at its first turn, but Double was also chosen by 1/4 of the field in the human championships.
Bridge Baron won the opening lead of the ♠K. If Bridge Baron ducks, then a heart return breaks up a possible spade-heart squeeze, leaving only a diamond heart squeeze against South, a reasonable possibility. Winning the first spade preserves endplays against either opponent, and in particular, if there was a diamond-heart squeeze against South by ducking the spade lead, then declarer can still endplay South in hearts to lead away from the ♦Q (it does lose if North started with exactly doubleton ♦Q).
Bridge Baron cashed five clubs and three hearts, South discarded two hearts and a spade coming down to three diamonds and a spade, and North discarded four spades coming down to three diamonds and a spade.
| ♠ Q
♥ - ♦ ? ? ? ♣ - | ||
| ♠
J
♥ - ♦ A K 7 ♣ - |
|
♠
-
♥ 8 ♦ J 8 4 ♣ - |
| ♠
-
♥ J ♦ ? ? ? ♣ - | ||
If South has the ♦Q then declarer must lead a heart and discard the spade Jack, endplaying South. If North has the ♦Q, then declarer must lead a diamond to the Ace and lead a spade, endplaying North. South correctly discarded the spade, leaving declarer with a guess. Bridge Baron chose correctly and picked up 13 IMPs when Shark Bridge played in 3NT making 5.
| 1-16 | 17-32 | 33-48 | 49-64 | Total | |
| WBridge5 co+6 | 74 | 46 | 75 | 77 | 278 |
| Q-Plus Bridge | 28 | 56 | 43 | 38 | 165 |
| 1-16 | 17-32 | 33-48 | 49-64 | Total | |
| Jack co +8 | 55 | 32 | 8 | 45 | 153 |
| Bridge Baron | 37 | 29 | 54 | 70 | 190 |
In an upset, Bridge Baron defeated defending champion Jack 190-153. In the other semifinal match WBridge5 defeated Q-Plus Bridge by a big margin, 278-165. WBridge5 won the round robin by winning all its matches, except for a tie with Bridge Baron. Due to the tie there will be carryover in the final.
A well played hand by Jack occurred on the penultimate board, but it was too late to catch Bridge Baron.
|
Board 63. Dealer South. N-S Vulnerable. | ||
| ♠
A K J 8 7
♥ Q 9 8 3 ♦ A 5 2 ♣ J | ||
| ♠
Q 10 6 3
♥ A ♦ J 10 9 4 ♣ 7 6 4 3 |
|
♠
9 5 2
♥ 10 6 5 4 2 ♦ Q 6 ♣ 10 5 2 |
| ♠
4
♥ K J 7 ♦ K 8 7 3 ♣ A K Q 9 8 | ||
| West | North | East | South |
| Jack | Bridge Baron | Jack | Bridge Baron |
| 1♣ | |||
| Pass | 1♠ | Pass | 2♦ |
| Pass | 2♥ | Pass | 3NT |
| Pass | 4NT* | Pass | 5♣ (1 or 4) |
| Pass | 6NT | All Pass |
On a spade lead, Jack rose with the Ace, hoping to get 3 heart tricks, 2 spades, 2 diamonds and 5 clubs. When the hearts behaved badly, Jack knew that East held 5 heart, three clubs and at least two spades, so could not hold four diamonds and therefore there could not be a heart-diamond squeeze against East. There was no spade-heart squeeze against East even if East held the ♠Q. The ♠Q had to be with West to make 6NT, and Jack played accordingly, cashing the five clubs three hearts ending in dummy. West could not hold the ♠Q and protect diamonds and South's ♦K8 won the last two tricks.
| 1-16 | 17-32 | 33-48 | 49-64 | Total | |
| WBridge5 | 41 | 53 | 26 | 86 | 206 |
| Bridge Baron | 45 | 12 | 32 | 12 | 101 |
Final play record as movie.lin
hand records: quarter1 quarter2 quarter3 quarter4
WBridge5 shines in slam bidding...from the final match