SONG Jiachen · CHINA SMZY SMOLEN
vs par split: bidding +0.53 · play -0.02
Strength of schedule: opponents averaged -0.34/bd (an easy draw) → opponent-adjusted -0.71/bd
Card play — on target: opening leads 85.7% #38 of 144 · declarer play 50.0% #124 of 144 · defence 75.8% #96 of 144
Bidding activity — not a pass: 28.0% #140 of 144 (40/143)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 80.0% (5) | 87.5% (16) |
| Declarer play | 100.0% (2) | 37.5% (8) |
| Defence | 75.0% (8) | 76.0% (25) |
Opening leads by suit led: ♠ 62.5% (8) · ♥ 100.0% (2) · ♦ 100.0% (4) · ♣ 100.0% (7)
vs par by strain: NT -0.13 (15) · a suit +0.75 (40)
vs par by level: part-score +2.04 (28) · game -1.77 (26) · slam +17.00 (1)
By role: declaring +0.01/bd (-3.73 vs par · 22) · defending -0.85/bd (+3.33 vs par · 33)
By vulnerability: vulnerable -0.82/bd (-0.31 vs par · 26) · not vulnerable +0.02/bd (+1.60 vs par · 30)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | S.Ding | J.Michalski – F.Stezala | Open | 8 | -23.2 | -2.90 | -3.25 |
| Round 3 | S.Ding | J.Narang – P.Bansal | Open | 8 | -7.2 | -0.90 | +0.12 |
| Round 4 | S.Ding | C.Liu – B.Pang | Open | 8 | +5.2 | +0.65 | -2.75 |
| Round 6 | S.Ding | A.Sukiennik – F.Skrobot | Open | 8 | -14.1 | -1.76 | +2.50 |
| Round 8 | S.Ding | K.Miszczuk – Z.Holowacz | Open | 8 | +17.9 | +2.24 | +0.38 |
| Round 9 | S.Ding | G.Duterte – S.Garcia | Closed | 8 | -7.2 | -0.90 | +3.00 |
| Round 10 | T.Yang | H.Du – Y.Wang | Closed | 8 | +7.8 | +0.97 | +5.00 |
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 |
|---|---|---|---|---|---|---|---|
| +7.2 | Round 8 | AZS UW GOL GIRLS | 7 | 4♥ | ♦3 | = | -1 |
| +7.1 | Round 10 | CHINA SMZY STAYMAN | 24 | 3NT | ♥A | +1 | +7 |
| +7.0 | Round 10 | CHINA SMZY STAYMAN | 21 | Pass | +12 | ||
| +6.6 | Round 9 | FRANCE | 16 | 6NT | ♠4 | -1 | +17 |
| +6.2 | Round 4 | BRIDGE SCHOOL TEAM2 | 26 | 5♠ | ♦5 | = | +13 |
| +5.0 | Round 8 | AZS UW GOL GIRLS | 5 | 4♥ | ♣3 | = | -9 |
| +5.0 | Round 8 | AZS UW GOL GIRLS | 6 | 4♥ | ♦8 | -2 | +11 |
| +4.4 | Round 4 | BRIDGE SCHOOL TEAM2 | 25 | 2♠ | ♦T | = | +6 |
| +4.3 | Round 3 | BRIDGEBLITZ DAIS | 13 | 4♠ | ♣7 | = | +10 |
| +3.4 | Round 6 | SPOJNIA U16 RED | 16 | 2♠ | ♣2 | = | +11 |
| +2.8 | Round 4 | BRIDGE SCHOOL TEAM2 | 28 | 2♦ | ♣4 | +2 | +0 |
| +2.4 | Round 1 | POLAND | 24 | 2♥ | ♠T | +3 | +6 |
| +2.4 | Round 8 | AZS UW GOL GIRLS | 4 | 3NT | ♥2 | +2 | -12 |
| +2.1 | Round 3 | BRIDGEBLITZ DAIS | 16 | 4♠ | ♥T | = | +0 |
| +2.0 | Round 4 | BRIDGE SCHOOL TEAM2 | 27 | 2♠ | ♦7 | = | -1 |
| +1.6 | Round 10 | CHINA SMZY STAYMAN | 28 | 3♥ | ♣K | -1 | +5 |
| +1.3 | Round 8 | AZS UW GOL GIRLS | 3 | 4♥ | ♣K | -1 | +5 |
| +1.0 | Round 1 | POLAND | 26 | 1♦ | ♠3 | +3 | +10 |
| +0.5 | Round 6 | SPOJNIA U16 RED | 14 | 4♠ | ♦A | = | +0 |
| +0.5 | Round 9 | FRANCE | 14 | 3NT | ♦8 | +4 | +14 |
| +0.4 | Round 10 | CHINA SMZY STAYMAN | 27 | 2♠ | ♠4 | +5 | +5 |
| +0.3 | Round 3 | BRIDGEBLITZ DAIS | 18 | 4♠ | ♥J | = | -11 |
| +0.3 | Round 10 | CHINA SMZY STAYMAN | 22 | 3♦ | ♠7 | +2 | +6 |
| +0.1 | Round 6 | SPOJNIA U16 RED | 18 | 2♠ | ♣K | +1 | +0 |
| +0.0 | Round 1 | POLAND | 27 | 1NT | ♠2 | -1 | -2 |
| +0.0 | Round 8 | AZS UW GOL GIRLS | 1 | 2♥ | ♣3 | = | +1 |
| -0.3 | Round 4 | BRIDGE SCHOOL TEAM2 | 23 | 4♠ | ♥9 | +1 | -17 |
| -0.4 | Round 4 | BRIDGE SCHOOL TEAM2 | 21 | 4♠ | ♥J | -2 | -6 |
| -0.5 | Round 6 | SPOJNIA U16 RED | 15 | 2♥ | ♠K | +1 | +6 |
| -0.6 | Round 3 | BRIDGEBLITZ DAIS | 15 | 4♠ | ♥K | = | +1 |
| -0.6 | Round 8 | AZS UW GOL GIRLS | 8 | 2NT | ♥3 | = | +7 |
| -0.8 | Round 9 | FRANCE | 17 | 3♥ | ♣J | +1 | +7 |
| -1.2 | Round 9 | FRANCE | 11 | 2♥ | ♣2 | +1 | -7 |
| -1.4 | Round 9 | FRANCE | 15 | 4♦ | ♥Q | -1 | -2 |
| -1.6 | Round 10 | CHINA SMZY STAYMAN | 23 | 3NT | ♦A | -2 | -2 |
| -1.7 | Round 6 | SPOJNIA U16 RED | 11 | 3NT | ♦3 | -4 | +6 |
| -1.8 | Round 3 | BRIDGEBLITZ DAIS | 17 | 3♥ | ♠8 | +1 | +4 |
| -2.1 | Round 3 | BRIDGEBLITZ DAIS | 14 | 4♥ | ♦2 | +2 | +8 |
| -2.1 | Round 10 | CHINA SMZY STAYMAN | 26 | 3♥ | ♣2 | = | +0 |
| -2.4 | Round 1 | POLAND | 22 | 2♥ | ♠6 | = | -5 |
| -2.4 | Round 8 | AZS UW GOL GIRLS | 2 | 3NT | ♥2 | = | +1 |
| -2.5 | Round 9 | FRANCE | 13 | 2♠ | ♦K | +4 | +9 |
| -2.7 | Round 3 | BRIDGEBLITZ DAIS | 11 | 1NT | ♦4 | = | +0 |
| -2.7 | Round 6 | SPOJNIA U16 RED | 13 | 2NT | ♠9 | = | +0 |
| -3.4 | Round 6 | SPOJNIA U16 RED | 17 | 3♥x | ♦4 | -2 | +4 |
| -3.6 | Round 1 | POLAND | 21 | 2♠ | ♣J | +1 | -7 |
| -4.0 | Round 9 | FRANCE | 18 | 4♠ | ♦5 | -1 | -12 |
| -4.4 | Round 4 | BRIDGE SCHOOL TEAM2 | 24 | 3♠ | ♣T | -2 | -11 |
| -4.4 | Round 9 | FRANCE | 12 | 1NT | ♠A | -2 | -2 |
| -4.9 | Round 10 | CHINA SMZY STAYMAN | 25 | 2♣x | ♦8 | = | +7 |
| -5.1 | Round 4 | BRIDGE SCHOOL TEAM2 | 22 | 4♥ | ♣2 | = | -6 |
| -6.6 | Round 1 | POLAND | 25 | 3NT | ♠6 | -1 | -12 |
| -6.6 | Round 1 | POLAND | 28 | 4♠ | ♥2 | = | -3 |
| -6.7 | Round 3 | BRIDGEBLITZ DAIS | 12 | 3NT | ♠J | -2 | -11 |
| -7.4 | Round 1 | POLAND | 23 | 3NT | ♦K | +1 | -13 |
| -9.8 | Round 6 | SPOJNIA U16 RED | 12 | 4♠ | ♣3 | = | -7 |