CHEN Zhi Hao · LUCKY SEVEN
vs par split: bidding +0.88 · play -0.85
Strength of schedule: opponents averaged +0.59/bd (a tough draw) → opponent-adjusted -0.44/bd
Card play — on target: opening leads 72.7% #203 of 310 · declarer play 66.7% #245 of 310 · defence 76.2% #269 of 311
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 50.0% (2) | 77.8% (9) |
| Declarer play | 66.7% (3) | 66.7% (3) |
| Defence | 50.0% (4) | 82.4% (17) |
Opening leads by suit led: ♠ 100.0% (1) · ♥ 50.0% (4) · ♦ 83.3% (6)
vs par by strain: NT +0.50 (10) · a suit -0.17 (24)
vs par by level: part-score -0.26 (19) · game -0.50 (14) · slam +13.00 (1)
By role: declaring +0.60/bd (-0.50 vs par · 14) · defending -2.12/bd (+0.91 vs par · 21)
By vulnerability: vulnerable -0.70/bd (+0.56 vs par · 16) · not vulnerable -1.31/bd (+0.16 vs par · 19)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | Y.Chen | F.Fantoni – C.Nunes | Open | 7 | -4.7 | -0.67 | -0.57 |
| Round 2 | Y.Chen | M.Rosenberg – C.Willenken | Closed | 7 | -12.7 | -1.81 | +2.29 |
| Round 3 | Y.Chen | B.Gierulski – J.Skrzypczak | Closed | 7 | -8.0 | -1.14 | -0.71 |
| Round 4 | Y.Chen | J.Ma – M.Shi | Closed | 7 | +1.2 | +0.17 | +2.14 |
| Round 6 | Y.Chen | D.Molenaar – T.Verbeek | Closed | 7 | -11.9 | -1.70 | -1.43 |
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 |
|---|---|---|---|---|---|---|---|
| +6.3 | Round 4 | PAN-CHINA | 28 | 3NT | ♣4 | +1 | +4 |
| +3.9 | Round 3 | VITAS | 17 | 4♠ | ♠2 | -1 | +8 |
| +3.6 | Round 1 | MONACO | 7 | 3♠ | ♣J | +1 | +1 |
| +3.2 | Round 2 | FLEISHER | 12 | 4♥ | ♦K | -1 | +5 |
| +2.6 | Round 2 | FLEISHER | 10 | 3♠x | ♣A | -1 | +7 |
| +2.4 | Round 1 | MONACO | 1 | 3NT | ♦10 | = | -1 |
| +2.3 | Round 6 | NETHERLANDS | 11 | 3NT | ♥2 | -1 | +4 |
| +1.8 | Round 1 | MONACO | 4 | Adj. | ♣A | +11 | |
| +1.6 | Round 6 | NETHERLANDS | 14 | 2♠ | ♦A | = | +0 |
| +1.5 | Round 6 | NETHERLANDS | 10 | 1NT | ♥K | +1 | +0 |
| +1.0 | Round 3 | VITAS | 21 | 1NT | ♥10 | +2 | +10 |
| +0.8 | Round 1 | MONACO | 2 | 2♥ | ♥3 | +3 | +10 |
| +0.7 | Round 2 | FLEISHER | 9 | 2♠ | ♦2 | +1 | +0 |
| +0.5 | Round 4 | PAN-CHINA | 26 | 1NT | ♠7 | = | -1 |
| +0.2 | Round 6 | NETHERLANDS | 12 | 4♥ | ♥10 | +1 | +0 |
| +0.1 | Round 4 | PAN-CHINA | 23 | 1♠ | ♠2 | +2 | +0 |
| +0.1 | Round 4 | PAN-CHINA | 25 | 3NT | ♠Q | = | +0 |
| +0.0 | Round 4 | PAN-CHINA | 27 | 4♠ | ♥5 | +1 | +11 |
| -0.1 | Round 4 | PAN-CHINA | 24 | 2♥ | ♠7 | -1 | +2 |
| -0.7 | Round 3 | VITAS | 15 | 4♥ | ♠10 | +1 | -11 |
| -0.9 | Round 2 | FLEISHER | 8 | 1NT | ♠2 | +1 | +0 |
| -2.0 | Round 3 | VITAS | 20 | 2NT | ♦5 | = | +0 |
| -2.2 | Round 6 | NETHERLANDS | 8 | 3♦ | ♥9 | +1 | -1 |
| -2.3 | Round 3 | VITAS | 19 | 4♠ | ♦K | = | -6 |
| -2.5 | Round 3 | VITAS | 18 | 3♥ | ♦2 | = | -6 |
| -2.7 | Round 1 | MONACO | 6 | 1NT | ♥2 | = | -11 |
| -2.7 | Round 6 | NETHERLANDS | 13 | 2♠ | ♦Q | +1 | -1 |
| -3.2 | Round 2 | FLEISHER | 14 | 2♠ | ♦J | +1 | -1 |
| -4.9 | Round 1 | MONACO | 5 | 2♠ | ♣7 | = | -6 |
| -5.4 | Round 3 | VITAS | 16 | 4♥ | ♣6 | = | +0 |
| -5.7 | Round 1 | MONACO | 3 | 3♥ | ♠K | -2 | -8 |
| -5.7 | Round 4 | PAN-CHINA | 22 | 4♥ | ♦6 | = | -1 |
| -7.4 | Round 2 | FLEISHER | 11 | 4♠ | ♥8 | = | -8 |
| -7.7 | Round 2 | FLEISHER | 13 | 6♠ | ♥5 | = | +13 |
| -12.6 | Round 6 | NETHERLANDS | 9 | 4♥x | ♦K | = | -12 |