Chess
Scotland

Chess
Scotland

Season:

Derek Lafferty

PNUM: 19006

Clubs: Salsburgh & Bellshill

Status: A

Gender: M

Fide ID: 2407167

Standard: 1549 ⇒ 1552 (+3)

Allegro: 1549 ⇒ 1558 (+9)

Standard Games

Rnd	Opponent	Stat	Pub	Adj	Used	Col	Res
Lanarkshire League Div 2
27	Alex McTaggart5230	A	1645	1645	1645	B	½
Grade Calculation: • DEREK LAFFERTY • 19006 • GRADED PLAYER CALCULATION • PUBLISHED GRADE: 1549 • STATUS: A • *** • RESULTS: • ALEX MCTAGGART \| 5230 \| DRAW \| PUB GRADE: 1645 \| ADJ GRADE (+0): 1645 \| USED GRADE: 1645 \| EXP: 0.369 • ----- • CALCULATION STEPS: • 1 GRADABLE GAMES • QTY GRADABLE GAMES (G): 1 • ACTUAL SCORE (ACT): 0.5 • EXPECTED SCORE (EXP): 0.369 • PUBLISHED GRADE (PUB): 1549 • HIGHER OF G OR 30 (N): 30 • LOWER OF G OR 30 (n): 1 • CALCULATED DRIFT (D): 4.58 (to 2 d.p.) • APPLIED DRIFT (d): D x n / 30 = 4.58 x 1 / 30 = 0 (to 0 d.p.) • LIVE = PUB + (800 x (ACT - EXP) / N) + d • 1549 + (800 x (0.5 - 0.369) / 30) + 0 = 1552 (to 0 d.p.) • GRADE DELTA: +3 • LIVE GRADE: 1552 • *** • GRADING CRITERIA MET • PLAYER GRANTED LIVE GRADE OF 1552

Allegro Games

Rnd	Opponent	Stat	Pub	Adj	Used	Col	Res
Salsburgh Allegro 7 Nov 2023
1	Kieran Mollins31486	J14	-	-	1149	W	1
2	Robert Murdoch31497	A	-	-	1149	W	1
4	Stuart Macpherson27324	A	843	843	1149	B	1
5	Sean Mcilwaine27326	A	722	722	722	W	1
6	Brandon Bell28988	A	1010	1010	1149	B	1
Grade Calculation: • DEREK LAFFERTY • 19006 • GRADED PLAYER CALCULATION • PUBLISHED GRADE: 1549 • STATUS: A • *** • RESULTS: • KIERAN MOLLINS \| 31486 \| J14 \| WIN \| UNGRADED \| EST GRADE: 434 \| USED GRADE: 1149 \| EXP: 0.918 • ROBERT MURDOCH \| 31497 \| WIN \| UNGRADED \| EST GRADE: 781 \| USED GRADE: 1149 \| EXP: 0.918 • STUART MACPHERSON \| 27324 \| WIN \| PUB GRADE: 843 \| ADJ GRADE (+0): 843 \| USED GRADE: 1149 \| EXP: 0.918 • SEAN MCILWAINE \| 27326 \| WIN \| PUB GRADE: 722 \| ADJ GRADE (+0): 722 \| USED GRADE: 722 \| RESULT VOID DUE TO THE 735 RULE • BRANDON BELL \| 28988 \| WIN \| PUB GRADE: 1010 \| ADJ GRADE (+0): 1010 \| USED GRADE: 1149 \| EXP: 0.918 • ----- • CALCULATION STEPS: • 4 GRADABLE GAMES • QTY GRADABLE GAMES (G): 4 • ACTUAL SCORE (ACT): 4.0 • EXPECTED SCORE (EXP): 3.672 • PUBLISHED GRADE (PUB): 1549 • HIGHER OF G OR 30 (N): 30 • LOWER OF G OR 30 (n): 4 • CALCULATED DRIFT (D): 0.85 (to 2 d.p.) • APPLIED DRIFT (d): D x n / 30 = 0.85 x 4 / 30 = 0 (to 0 d.p.) • LIVE = PUB + (800 x (ACT - EXP) / N) + d • 1549 + (800 x (4.0 - 3.672) / 30) + 0 = 1558 (to 0 d.p.) • GRADE DELTA: +9 • LIVE GRADE: 1558 • *** • GRADING CRITERIA MET • PLAYER GRANTED LIVE GRADE OF 1558