DONG Chunhui · JILINDINGYUAN
vs par split: bidding -0.36 · play -0.21
Strength of schedule: opponents averaged +0.19/bd (a tough draw) → opponent-adjusted -0.03/bd
Card play — on target: opening leads 42.9% #304 of 310 · declarer play 66.7% #241 of 310 · defence 73.7% #286 of 311
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 50.0% (4) | 33.3% (3) |
| Declarer play | 80.0% (5) | 50.0% (4) |
| Defence | 50.0% (6) | 84.6% (13) |
Opening leads by suit led: ♠ 0.0% (4) · ♥ 100.0% (1) · ♦ 100.0% (1) · ♣ 100.0% (1)
vs par by strain: NT -0.57 (14) · a suit -0.57 (28)
vs par by level: part-score -0.86 (21) · game -0.42 (19) · slam +1.00 (2)
By role: declaring -0.06/bd (-1.83 vs par · 23) · defending -0.42/bd (+0.95 vs par · 19)
By vulnerability: vulnerable -0.15/bd (-1.09 vs par · 21) · not vulnerable -0.29/bd (-0.05 vs par · 21)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | W.He | G.Sun – S.Shan | Open | 7 | +12.6 | +1.80 | +1.57 |
| Round 3 | W.He | G.Lorentz – S.Burgess | Open | 7 | +1.9 | +0.27 | -0.57 |
| Round 4 | W.He | U.Kasimir – P.Jokisch | Open | 7 | -9.6 | -1.37 | -3.29 |
| Round 6 | W.He | B.Satyanarayana – K.Nadar | Closed | 7 | -2.9 | -0.41 | +0.00 |
| Round 7 | W.He | M.Krupowicz – P.Janiszewski | Open | 7 | -12.6 | -1.80 | -1.14 |
| Round 8 | W.He | Z.Shi – C.Ju | Open | 7 | +1.4 | +0.20 | +0.00 |
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 |
|---|---|---|---|---|---|---|---|
| +12.4 | Round 6 | FORMIDABLES | 9 | 5♥x | ♦K | -3 | +14 |
| +7.1 | Round 8 | CHINA OPN(A) | 23 | 3NT | ♥3 | -3 | +9 |
| +5.6 | Round 3 | LORENTZ | 15 | 2♥ | ♠10 | +5 | +12 |
| +5.2 | Round 4 | KASIMIRS DREAMTEAM | 22 | 3NT | ♦5 | = | +0 |
| +4.8 | Round 1 | P D TRANSNATIONAL | 4 | 1NT | ♣A | = | +12 |
| +3.7 | Round 1 | P D TRANSNATIONAL | 3 | 2NT | ♠5 | +2 | +1 |
| +3.7 | Round 8 | CHINA OPN(A) | 24 | 3NT | ♠J | -2 | +6 |
| +3.1 | Round 1 | P D TRANSNATIONAL | 1 | 3NT | ♠Q | +1 | +0 |
| +2.7 | Round 7 | ZAWADA | 15 | 4♠ | ♥5 | -1 | +12 |
| +2.6 | Round 7 | ZAWADA | 21 | 6♠ | ♥5 | = | +0 |
| +2.5 | Round 3 | LORENTZ | 18 | 3♥ | ♦2 | = | +6 |
| +2.5 | Round 8 | CHINA OPN(A) | 27 | 4♠ | ♦Q | = | +0 |
| +2.3 | Round 3 | LORENTZ | 19 | 4♠ | ♦K | = | +6 |
| +1.9 | Round 1 | P D TRANSNATIONAL | 7 | 4♥ | ♦Q | -1 | -1 |
| +1.9 | Round 7 | ZAWADA | 20 | 2♠ | ♥5 | = | +0 |
| +1.3 | Round 3 | LORENTZ | 20 | 2NT | ♦5 | +1 | -1 |
| +0.8 | Round 1 | P D TRANSNATIONAL | 2 | 2♥ | ♦Q | +3 | +10 |
| +0.7 | Round 8 | CHINA OPN(A) | 25 | 2♥ | ♦7 | +1 | +0 |
| +0.2 | Round 6 | FORMIDABLES | 12 | 4♥ | ♠8 | +1 | +0 |
| -0.0 | Round 1 | P D TRANSNATIONAL | 5 | 2♠ | ♠2 | -1 | -1 |
| -0.0 | Round 4 | KASIMIRS DREAMTEAM | 27 | 4♠ | ♥4 | +1 | -11 |
| -0.1 | Round 4 | KASIMIRS DREAMTEAM | 25 | 3NT | ♦3 | = | +0 |
| -0.1 | Round 6 | FORMIDABLES | 14 | 3♠ | ♠Q | +1 | -2 |
| -0.2 | Round 6 | FORMIDABLES | 8 | 3♠ | ♦K | -1 | +2 |
| -0.7 | Round 7 | ZAWADA | 17 | 4♥ | ♥5 | -2 | -7 |
| -1.0 | Round 4 | KASIMIRS DREAMTEAM | 23 | 2♠ | ♥3 | = | -1 |
| -1.7 | Round 1 | P D TRANSNATIONAL | 6 | 1NT | ♥4 | +1 | -10 |
| -2.1 | Round 8 | CHINA OPN(A) | 22 | 3♥ | ♥6 | -2 | +1 |
| -2.3 | Round 3 | LORENTZ | 16 | 1NT | ♠4 | = | -8 |
| -2.3 | Round 4 | KASIMIRS DREAMTEAM | 26 | 1NT | ♠7 | +2 | -1 |
| -2.7 | Round 6 | FORMIDABLES | 13 | 2♠ | ♥J | +1 | -1 |
| -3.6 | Round 3 | LORENTZ | 21 | 3♦ | ♣10 | -1 | -11 |
| -3.9 | Round 3 | LORENTZ | 17 | 4♠ | ♠2 | -1 | -8 |
| -4.1 | Round 6 | FORMIDABLES | 10 | 3NT | ♠4 | -1 | -6 |
| -4.1 | Round 8 | CHINA OPN(A) | 26 | 2♠ | ♥6 | = | -11 |
| -5.0 | Round 7 | ZAWADA | 16 | 5♠ | ♥5 | -2 | -7 |
| -5.7 | Round 4 | KASIMIRS DREAMTEAM | 24 | 2♦x | ♠7 | = | -7 |
| -5.7 | Round 4 | KASIMIRS DREAMTEAM | 28 | 3NT | ♣4 | = | -3 |
| -6.3 | Round 7 | ZAWADA | 19 | 2♥x | ♥3 | -1 | -8 |
| -6.4 | Round 8 | CHINA OPN(A) | 28 | 5♥x | ♠3 | -2 | -5 |
| -7.8 | Round 7 | ZAWADA | 18 | 6♦ | ♥5 | = | +2 |
| -8.4 | Round 6 | FORMIDABLES | 11 | 3NT | ♠3 | = | -7 |