CHEN Andrew · JACK
vs par split: bidding -0.57 · play +0.97
Strength of schedule: opponents averaged +0.20/bd (a tough draw) → opponent-adjusted +1.92/bd
Card play — on target: opening leads 77.8% #81 of 144 · declarer play 85.2% #21 of 144 · defence 94.7% #6 of 144
Bidding activity — not a pass: 47.1% #25 of 144 (97/206)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 80.0% (5) | 76.9% (13) |
| Declarer play | 80.0% (10) | 88.2% (17) |
| Defence | 100.0% (8) | 93.3% (30) |
Opening leads by suit led: ♠ 50.0% (6) · ♥ 75.0% (4) · ♦ 100.0% (5) · ♣ 100.0% (3)
vs par by strain: NT -0.65 (23) · a suit +0.82 (57)
vs par by level: part-score +0.89 (36) · game +0.32 (41) · slam -4.33 (3)
By role: declaring +1.95/bd (-2.38 vs par · 42) · defending +1.46/bd (+3.47 vs par · 38)
By vulnerability: vulnerable +2.15/bd (+0.15 vs par · 34) · not vulnerable +1.39/bd (+0.59 vs par · 46)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | J.Xiao | F.Skrobot – A.Sukiennik | Open | 8 | +32.4 | +4.05 | +2.75 |
| Round 2 | J.Xiao | K.Turant – J.Adamczak | Closed | 8 | +22.4 | +2.80 | +0.62 |
| Round 3 | J.Xiao | D.Magrys – M.Klimiuk | Closed | 8 | +1.6 | +0.20 | +0.50 |
| Round 4 | J.Xiao | H.Lin – C.Bai | Open | 8 | +22.8 | +2.85 | -1.12 |
| Round 5 | J.Xiao | Z.Zabradi – G.Szabo | Open | 8 | +19.2 | +2.40 | +2.62 |
| Round 6 | J.Xiao | K.Chang – L.Wu | Closed | 8 | +14.7 | +1.84 | -1.75 |
| Round 7 | J.Xiao | H.Chiu – Y.Chang | Closed | 8 | +4.8 | +0.60 | +1.12 |
| Round 8 | J.Xiao | B.Chen – O.Deng | Closed | 8 | +12.8 | +1.60 | -0.38 |
| Round 9 | J.Xiao | M.Moe – S.Lillejord | Closed | 8 | +9.5 | +1.19 | -2.88 |
| Round 10 | J.Xiao | M.Blicharz – T.Bradkin | Closed | 8 | -3.1 | -0.39 | +2.50 |
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 |
|---|---|---|---|---|---|---|---|
| +13.7 | Round 2 | AZS UW WARSAW 1 | 4 | 6♦ | ♥A | +1 | +0 |
| +11.9 | Round 1 | SPOJNIA U16 RED | 28 | 3♥x | ♣T | = | +14 |
| +11.7 | Round 6 | CT 360 | 18 | 4♣x | ♠J | -3 | +12 |
| +11.6 | Round 9 | THE VIKINGS | 16 | 6NT | ♥8 | = | +0 |
| +10.2 | Round 4 | RDFZ | 23 | 6♠ | ♥9 | +1 | -13 |
| +8.9 | Round 6 | CT 360 | 16 | 4♠x | ♣6 | = | +4 |
| +7.1 | Round 1 | SPOJNIA U16 RED | 23 | 3NT | ♠T | -2 | +2 |
| +6.7 | Round 8 | CHINA SMZY SPLINTER | 7 | 3NT | ♠9 | = | -2 |
| +6.4 | Round 5 | CZE HUN | 1 | 3NT | ♦2 | -2 | +11 |
| +6.4 | Round 8 | CHINA SMZY SPLINTER | 5 | 4♥ | ♣3 | +2 | -8 |
| +6.4 | Round 9 | THE VIKINGS | 18 | 5♠ | ♦5 | -2 | +12 |
| +5.9 | Round 1 | SPOJNIA U16 RED | 26 | 3♠ | ♠4 | -1 | +12 |
| +5.8 | Round 10 | VERCO | 26 | 4♥ | ♣9 | -2 | +8 |
| +5.7 | Round 4 | RDFZ | 26 | 4♠ | ♦5 | +2 | +13 |
| +5.7 | Round 7 | CT U16 | 24 | 4♠ | ♣A | -1 | +4 |
| +5.5 | Round 6 | CT 360 | 17 | 3NT | ♦3 | = | -1 |
| +5.0 | Round 5 | CZE HUN | 6 | 3♣ | ♥5 | -2 | +11 |
| +4.8 | Round 3 | POLAND | 12 | 5♣ | ♠J | = | -2 |
| +4.8 | Round 4 | RDFZ | 21 | 3NT | ♥A | +1 | +0 |
| +4.8 | Round 5 | CZE HUN | 8 | 1NT | ♥9 | +1 | +5 |
| +4.4 | Round 10 | VERCO | 25 | 3NT | ♠Q | -4 | +12 |
| +4.3 | Round 3 | POLAND | 13 | 4♠ | ♣5 | = | +10 |
| +4.1 | Round 1 | SPOJNIA U16 RED | 24 | 3♥ | ♠T | = | +7 |
| +4.1 | Round 2 | AZS UW WARSAW 1 | 1 | 4♥ | ♣7 | +2 | +2 |
| +4.1 | Round 10 | VERCO | 28 | 4♥x | ♣K | -1 | +7 |
| +3.9 | Round 2 | AZS UW WARSAW 1 | 5 | 3♠ | ♥K | -1 | +6 |
| +3.8 | Round 1 | SPOJNIA U16 RED | 21 | 4♠ | ♦7 | +1 | +1 |
| +3.8 | Round 2 | AZS UW WARSAW 1 | 2 | 4♠ | ♦A | -2 | +7 |
| +3.1 | Round 10 | VERCO | 27 | 5♣ | ♠K | -3 | +7 |
| +3.0 | Round 1 | SPOJNIA U16 RED | 27 | 2NT | ♠6 | -3 | +1 |
| +2.4 | Round 8 | CHINA SMZY SPLINTER | 4 | 3NT | ♥3 | +2 | -12 |
| +2.3 | Round 5 | CZE HUN | 2 | 3♠ | ♣2 | -2 | -5 |
| +2.2 | Round 4 | RDFZ | 24 | 2NT | ♥5 | +1 | -6 |
| +2.1 | Round 3 | POLAND | 16 | 4♠ | ♥9 | = | +0 |
| +2.1 | Round 5 | CZE HUN | 7 | 3♥ | ♣A | = | +0 |
| +2.0 | Round 4 | RDFZ | 28 | 1NT | ♣A | -1 | -1 |
| +1.8 | Round 7 | CT U16 | 22 | 3♦ | ♥A | = | +6 |
| +1.6 | Round 2 | AZS UW WARSAW 1 | 3 | 2♠ | ♣Q | +3 | -9 |
| +1.5 | Round 2 | AZS UW WARSAW 1 | 7 | 2♠ | ♣K | -1 | +0 |
| +1.4 | Round 6 | CT 360 | 15 | 2♥ | ♠K | +2 | -6 |
| +1.4 | Round 9 | THE VIKINGS | 15 | 2NT | ♠K | -1 | +2 |
| +1.3 | Round 3 | POLAND | 18 | 4♠ | ♦K | +1 | -11 |
| +1.3 | Round 8 | CHINA SMZY SPLINTER | 3 | 4♥ | ♣5 | -1 | +5 |
| +1.1 | Round 3 | POLAND | 11 | 2♠ | ♦Q | -1 | +4 |
| +1.1 | Round 4 | RDFZ | 22 | 3♥ | ♠2 | = | +2 |
| +1.1 | Round 5 | CZE HUN | 3 | 2♠ | ♦6 | -1 | -2 |
| +1.1 | Round 7 | CT U16 | 28 | 3♠ | ♣T | +1 | +1 |
| +0.8 | Round 7 | CT U16 | 27 | 1NT | ♠T | -4 | +6 |
| +0.8 | Round 8 | CHINA SMZY SPLINTER | 1 | 1NT | ♥4 | = | +2 |
| +0.3 | Round 8 | CHINA SMZY SPLINTER | 8 | 2♦ | ♥5 | = | +7 |
| -0.0 | Round 9 | THE VIKINGS | 13 | 2♦ | ♣K | +2 | -10 |
| -0.2 | Round 7 | CT U16 | 25 | 1NT | ♠T | +1 | +0 |
| -0.5 | Round 9 | THE VIKINGS | 14 | 3NT | ♥4 | +4 | -14 |
| -0.8 | Round 5 | CZE HUN | 4 | 1NT | ♥8 | +2 | +1 |
| -0.8 | Round 7 | CT U16 | 26 | 2♠ | ♥K | +1 | +0 |
| -1.1 | Round 4 | RDFZ | 25 | 3♠ | ♣J | -1 | +1 |
| -1.1 | Round 9 | THE VIKINGS | 17 | 3♣x | ♣7 | -1 | -8 |
| -1.2 | Round 1 | SPOJNIA U16 RED | 25 | 2♥ | ♦7 | +2 | -10 |
| -1.5 | Round 7 | CT U16 | 21 | 3♦ | ♥6 | = | +0 |
| -1.6 | Round 2 | AZS UW WARSAW 1 | 8 | 5♦ | ♥K | = | +1 |
| -1.6 | Round 3 | POLAND | 15 | 4♠ | ♦9 | +1 | +0 |
| -1.7 | Round 5 | CZE HUN | 5 | 4♠ | ♥5 | +1 | +0 |
| -1.7 | Round 6 | CT 360 | 12 | 3NT | ♦2 | -2 | -5 |
| -2.0 | Round 8 | CHINA SMZY SPLINTER | 6 | 3♠ | ♥2 | -2 | +5 |
| -2.1 | Round 4 | RDFZ | 27 | 4♠ | ♥3 | -1 | -5 |
| -2.1 | Round 7 | CT U16 | 23 | 4♠x | ♣3 | -1 | -8 |
| -2.2 | Round 1 | SPOJNIA U16 RED | 22 | 4♣ | ♦A | -1 | -5 |
| -2.4 | Round 6 | CT 360 | 14 | 4♥ | ♦J | +2 | -2 |
| -2.8 | Round 3 | POLAND | 14 | 4♥ | ♠T | +3 | +7 |
| -3.1 | Round 8 | CHINA SMZY SPLINTER | 2 | 4♠ | ♥6 | = | +0 |
| -3.2 | Round 6 | CT 360 | 13 | 2NT | ♠9 | -1 | -5 |
| -3.2 | Round 9 | THE VIKINGS | 12 | 2NT | ♦6 | -2 | -6 |
| -3.4 | Round 10 | VERCO | 24 | 3NT | ♥A | -1 | -5 |
| -4.2 | Round 10 | VERCO | 21 | 3NT | ♥Q | = | +0 |
| -4.6 | Round 2 | AZS UW WARSAW 1 | 6 | 4♥ | ♦K | -2 | -2 |
| -5.1 | Round 9 | THE VIKINGS | 11 | 4♥ | ♥6 | = | +1 |
| -5.4 | Round 10 | VERCO | 22 | 5♦ | ♠9 | = | +0 |
| -5.5 | Round 6 | CT 360 | 11 | 5♦ | ♠9 | -2 | -11 |
| -7.5 | Round 10 | VERCO | 23 | 4♥x | ♣T | -2 | -9 |
| -7.6 | Round 3 | POLAND | 17 | 4♥ | ♠A | +1 | -4 |