CiF Rating Info

Example for the calculation of the rating by Thomas Amelang

Example 1

 

Rating White: 2257,14 (more than 25 finished games)

Rating Black: 2019,32 (more than 25 finished games)

Rating difference: 237,82

Basic points (GP): Victory = +10 Points

Draw =  - 0,25 Points

Null   =  -10 Points

Calculation:
Black: GP + 3% of the rating difference = rating-points
(as minor rating)

White: GP - 3% of the rating difference = rating points
(as higher rating)

Result 1-0: White +10 - 7,13 = + 2,87 --> + 2,87 Points

Black -10 + 7,13 = - 2,87 --> - 2,87 Points

Result ½-½: White - 0,25 - 7,13 = - 7,38 --> - 7,38 Points

Black - 0,25 + 7,13 = + 6,88 --> + 6,88 Points

Result 0-1: White -10 - 7,13 = - 17,13 --> -17,13 Points

Black +10 + 7,13 = +17,13 --> +17,13 Points

Example 2

 

Rating White: 2257,14 (more than 25 finished games)

Rating Black: 1810,00 (more than 25 finished games)

Rating difference: 447,14

Basic points (GP): Victory = +10 Points

Draw =  - 0,25 Points

Loss  =  -10 Points

Calculation: Black:GP + 3% of the rating difference = rating-points (as minor rating)

White:GP - 3% of the rating difference = rating points (as higher rating)

Result 1-0: White +10 -13,41 = - 3,41 --> + 1,00 Points !! (for victory)

Black -10 +13,41 = + 3,41 --> - 1,00 Points !! (for loss)

Result ½-½: White - 0,25 -13,41 = -13,66 --> -13,66 Points

Black - 0,25 +13,41 = +13,16 --> +13,16 Points

Result 0-1: White -10 -13,41 = -23,41 --> -23,41 Points

Black 10 +13,41 = +23,41 --> +23,41 Points

Example 2

 

Rating White 2257,14 (more than 25 finished games)

Rating Black: 1810,00 (less than 25 finished games)

Rating difference: 447,14

Basic points (GPW): White (as more than 25 finished games)

Victory = +10 Points

Draw = - 0,25 Points

Loss = -10 Points

Basic points (GPS): Black (less than 25 finished games)

Victory = +15 Points

Draw = - 0,25 Points

Loss = -12 Points

Calculation Black:GP + 10% of the rating difference = rating-points (as minor rating)

White:GP - 3% of the rating difference = rating points (as higher rating)

Result 1-0: White +10 -13,41 = - 3,41 --> + 1,00 Points !! (for victory)

Black -12 +44,71 = +34,71 --> - 1,00 Points !! (for lossl)

Result ½-½: White - 0,25 -13,41 = -13,66 --> -13,66 Points

Black - 0,25 +44,71 = +44,46 --> +44,46 Points

Result 0-1: White -10 -13,41 = -23,41 --> -23,41 Points

Black +15 +44,71 = +59,71 --> +59,71 Points

For players with less than 25 games there will be a recalculation and the rating will be aligned with the actual rating. This is important for „conquerors of a peak“