CHENG Erna · SWISS LADIES
217rank
-124.8Butler · 84 bds
-1.49per board
±4.6swing
-2.10vs par /bd · #215/216
-1.46adjusted /bd
by round
vs par split: bidding -1.13 · play -0.96
Strength of schedule: opponents averaged +0.02/bd (an average draw) → opponent-adjusted -1.46/bd
Card play — on target: opening leads 83.3% #97 of 216 · declarer play 72.4% #120 of 216 · defence 82.9% #168 of 216
Bidding activity — not a pass: 44.6% #81 of 216 (107/240)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 80.0% (5) | 84.6% (13) |
| Declarer play | 77.8% (9) | 70.0% (20) |
| Defence | 77.8% (9) | 84.6% (26) |
Opening leads by suit led: ♠ 100.0% (2) · ♥ 66.7% (6) · ♦ 80.0% (5) · ♣ 100.0% (5)
vs par by strain: NT -3.18 (22) · a suit -1.71 (62)
vs par by level: part-score -2.20 (25) · game -1.59 (51) · slam -5.00 (8)
By role: declaring -1.25/bd (-3.80 vs par · 49) · defending -1.82/bd (+0.29 vs par · 35)
By vulnerability: vulnerable -0.24/bd (-2.00 vs par · 42) · not vulnerable -2.73/bd (-2.19 vs par · 42)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | V.Waelti | K.Martens – M.Pietraszek | Closed | 12 | -20.2 | -1.68 | -3.33 |
| Round 4 | V.Waelti | Y.Moulin – E.Lemaitre Dechelette | Open | 12 | +0.7 | +0.06 | -1.50 |
| Round 5 | V.Waelti | A.Kowalski – A.Jankauskas | Open | 12 | -31.4 | -2.62 | -1.83 |
| Round 7 | V.Waelti | S.Hamaoui – A.Buratti | Open | 12 | -36.1 | -3.01 | -3.17 |
| Round 8 | V.Waelti | E.Laurant – L.Lantaron | Open | 12 | -37.1 | -3.09 | -2.83 |
| Round 10 | K.Balabanova | M.Buratti – M.Aghemo | Open | 12 | -12.2 | -1.02 | -1.83 |
| Round 11 | V.Waelti | O.La Spada – C.La Spada | Closed | 12 | +11.5 | +0.96 | -0.17 |
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 |
|---|---|---|---|---|---|---|---|
| +10.6 | Round 7 | CALANDRA | 9 | 4♥ | ♠3 | -1 | +16 |
| +6.6 | Round 4 | THE FOUR TOPS | 21 | 3NT | ♦T | -3 | +11 |
| +6.2 | Round 8 | LAST MINUTE | 13 | 4♠ | ♥Q | = | +9 |
| +6.0 | Round 2 | MARTENS | 18 | 5♣ | ♦9 | -1 | +10 |
| +5.6 | Round 10 | FRENNA WOMEN | 23 | 6♠ | ♣5 | -1 | +13 |
| +5.6 | Round 11 | LES QUATRE TREFLES | 3 | 4♠ | ♣K | = | +7 |
| +4.9 | Round 4 | THE FOUR TOPS | 20 | 4♠ | ♠2 | = | +0 |
| +4.6 | Round 11 | LES QUATRE TREFLES | 2 | 4♠ | ♥K | +2 | -9 |
| +4.4 | Round 4 | THE FOUR TOPS | 19 | 2♥ | ♦A | +1 | +6 |
| +3.5 | Round 10 | FRENNA WOMEN | 19 | 3NT | ♥9 | +2 | +0 |
| +3.5 | Round 11 | LES QUATRE TREFLES | 5 | 4♠ | ♣T | -1 | +5 |
| +3.1 | Round 11 | LES QUATRE TREFLES | 6 | 2♦ | ♣4 | = | +5 |
| +2.3 | Round 2 | MARTENS | 15 | 4♥ | ♠8 | +1 | +4 |
| +1.9 | Round 4 | THE FOUR TOPS | 15 | 1NT | ♦K | +1 | +0 |
| +1.9 | Round 8 | LAST MINUTE | 16 | 4♠ | ♦J | = | +0 |
| +1.8 | Round 4 | THE FOUR TOPS | 18 | 4♠ | ♥K | -2 | +5 |
| +1.4 | Round 11 | LES QUATRE TREFLES | 10 | 3NT | ♠6 | +3 | -12 |
| +1.3 | Round 11 | LES QUATRE TREFLES | 12 | 4♠ | ♣9 | +1 | +0 |
| +1.2 | Round 2 | MARTENS | 21 | 5♦ | ♣3 | +1 | -13 |
| +1.2 | Round 8 | LAST MINUTE | 23 | 2♥ | ♠2 | = | +0 |
| +1.2 | Round 11 | LES QUATRE TREFLES | 7 | 3NT | ♣7 | +1 | +0 |
| +1.1 | Round 5 | GLOSENDAS | 5 | 2♠ | ♠5 | +1 | +0 |
| +0.8 | Round 4 | THE FOUR TOPS | 23 | 2♥ | ♣A | +1 | -10 |
| +0.8 | Round 5 | GLOSENDAS | 7 | 4♥ | ♠A | +2 | +1 |
| +0.8 | Round 5 | GLOSENDAS | 11 | 3NT | ♠6 | +2 | +10 |
| +0.7 | Round 7 | CALANDRA | 6 | 6NT | ♦T | +1 | -13 |
| +0.6 | Round 7 | CALANDRA | 2 | 3♠ | ♠9 | = | +1 |
| +0.4 | Round 10 | FRENNA WOMEN | 13 | 1NT | ♣3 | = | +0 |
| +0.3 | Round 4 | THE FOUR TOPS | 16 | 4♥ | ♠K | +1 | +0 |
| +0.3 | Round 7 | CALANDRA | 4 | 3NT | ♣6 | = | +0 |
| +0.2 | Round 2 | MARTENS | 19 | 4♥ | ♣5 | = | +0 |
| +0.2 | Round 5 | GLOSENDAS | 9 | 4♠ | ♥9 | = | +1 |
| +0.0 | Round 7 | CALANDRA | 8 | 2♦ | ♠6 | +1 | +0 |
| -0.0 | Round 8 | LAST MINUTE | 18 | 3NT | ♠5 | = | -2 |
| -0.1 | Round 2 | MARTENS | 16 | 4♥ | ♥3 | +2 | +13 |
| -0.1 | Round 5 | GLOSENDAS | 12 | 3NT | ♠T | +1 | +0 |
| -0.1 | Round 11 | LES QUATRE TREFLES | 8 | 4♠ | ♦3 | = | +3 |
| -0.2 | Round 8 | LAST MINUTE | 22 | 4♠ | ♦4 | = | +3 |
| -0.5 | Round 5 | GLOSENDAS | 3 | 4♥ | ♣J | = | +0 |
| -0.5 | Round 10 | FRENNA WOMEN | 16 | 3NT | ♦T | +1 | +0 |
| -0.6 | Round 11 | LES QUATRE TREFLES | 11 | 2♣ | ♥3 | = | -1 |
| -0.8 | Round 4 | THE FOUR TOPS | 17 | 3♠ | ♥K | +2 | -6 |
| -0.8 | Round 10 | FRENNA WOMEN | 15 | 2♠ | ♣8 | +1 | +0 |
| -0.9 | Round 10 | FRENNA WOMEN | 20 | 2♠ | ♣A | = | -10 |
| -1.1 | Round 10 | FRENNA WOMEN | 14 | 3♥ | ♥5 | = | -1 |
| -1.5 | Round 7 | CALANDRA | 7 | 4♠ | ♥6 | +1 | -1 |
| -1.6 | Round 2 | MARTENS | 17 | 4♥ | ♠A | -1 | -4 |
| -1.6 | Round 10 | FRENNA WOMEN | 24 | 3♥ | ♣K | +1 | -2 |
| -1.7 | Round 11 | LES QUATRE TREFLES | 1 | 4♥ | ♦J | = | -3 |
| -1.8 | Round 2 | MARTENS | 23 | 1NT | ♥8 | -1 | +1 |
| -1.8 | Round 4 | THE FOUR TOPS | 13 | 4♠ | ♥K | = | -3 |
| -1.9 | Round 5 | GLOSENDAS | 10 | 1NT | ♥8 | +1 | -10 |
| -2.0 | Round 10 | FRENNA WOMEN | 17 | 4♥ | ♦7 | -1 | -5 |
| -2.2 | Round 5 | GLOSENDAS | 2 | 6♣ | ♥6 | +1 | +13 |
| -2.3 | Round 11 | LES QUATRE TREFLES | 9 | 4♠ | ♣J | -1 | +10 |
| -2.6 | Round 4 | THE FOUR TOPS | 22 | 2♥ | ♠4 | = | +1 |
| -3.1 | Round 8 | LAST MINUTE | 14 | 6NT | ♠7 | +1 | -1 |
| -3.1 | Round 8 | LAST MINUTE | 21 | 5♣x | ♥2 | -2 | -5 |
| -3.3 | Round 2 | MARTENS | 24 | 4♥ | ♦6 | +3 | -10 |
| -3.4 | Round 2 | MARTENS | 20 | 3♠ | ♥A | = | +0 |
| -3.4 | Round 10 | FRENNA WOMEN | 21 | 3NT | ♥6 | = | -10 |
| -3.5 | Round 5 | GLOSENDAS | 1 | 2♠ | ♥3 | = | -6 |
| -4.1 | Round 8 | LAST MINUTE | 15 | 3♣ | ♥K | +1 | -1 |
| -4.2 | Round 5 | GLOSENDAS | 4 | 1NT | ♦8 | = | -5 |
| -4.3 | Round 2 | MARTENS | 13 | 3NT | ♥6 | +4 | -17 |
| -4.5 | Round 11 | LES QUATRE TREFLES | 4 | 4♠x | ♥K | -1 | -7 |
| -4.6 | Round 2 | MARTENS | 22 | 3♠ | ♦K | -1 | -10 |
| -4.6 | Round 8 | LAST MINUTE | 20 | 3NT | ♦9 | = | +0 |
| -4.7 | Round 7 | CALANDRA | 12 | 3♠x | ♦J | -2 | -9 |
| -5.4 | Round 10 | FRENNA WOMEN | 18 | 4♥ | ♠A | -2 | +5 |
| -6.0 | Round 10 | FRENNA WOMEN | 22 | 5♦ | ♣K | -1 | -12 |
| -6.2 | Round 5 | GLOSENDAS | 8 | 3NT | ♣A | = | -6 |
| -6.4 | Round 7 | CALANDRA | 11 | 3NT | ♣J | -1 | -5 |
| -6.6 | Round 7 | CALANDRA | 10 | 3♠ | ♥A | = | +2 |
| -6.8 | Round 4 | THE FOUR TOPS | 24 | 3NT | ♠2 | -2 | -11 |
| -7.3 | Round 8 | LAST MINUTE | 24 | 4♥x | ♦Q | -2 | -10 |
| -8.0 | Round 4 | THE FOUR TOPS | 14 | 6♣ | ♥2 | = | -11 |
| -9.1 | Round 7 | CALANDRA | 1 | 5♥x | ♠A | -1 | -11 |
| -9.4 | Round 7 | CALANDRA | 3 | 5♦ | ♠K | = | -11 |
| -10.6 | Round 7 | CALANDRA | 5 | 6♦ | ♣A | = | -7 |
| -10.8 | Round 2 | MARTENS | 14 | 6♣x | ♦A | -3 | -14 |
| -11.2 | Round 8 | LAST MINUTE | 19 | 4♥ | ♦K | -1 | -12 |
| -12.8 | Round 8 | LAST MINUTE | 17 | 4♠ | ♣A | = | -15 |
| -15.7 | Round 5 | GLOSENDAS | 6 | 6♥ | ♦T | -2 | -20 |