Game 5
{ White: Loewenthal, Johann Jacob }
{ Top 1 Match: 26/57 ( 45.6% )
{ Top 2 Match: 34/57 ( 59.6% )
{ Top 3 Match: 39/57 ( 68.4% )
{ Top 4 Match: 41/57 ( 71.9% )
{ Black: Morphy, Paul }
{ Top 1 Match: 30/57 ( 52.6% )
{ Top 2 Match: 37/57 ( 64.9% )
{ Top 3 Match: 38/57 ( 66.7% )
{ Top 4 Match: 43/57 ( 75.4% )
Game 6
{ White: Loewenthal, Johann Jacob }
{ Top 1 Match: 16/20 ( 80.0% )
{ Top 2 Match: 18/20 ( 90.0% )
{ Top 3 Match: 19/20 ( 95.0% )
{ Top 4 Match: 19/20 ( 95.0% )
{ Black: Morphy, Paul }
{ Top 1 Match: 10/19 ( 52.6% )
{ Top 2 Match: 12/19 ( 63.2% )
{ Top 3 Match: 15/19 ( 78.9% )
{ Top 4 Match: 15/19 ( 78.9% )
Game 7
{ White: Loewenthal, Johann Jacob }
{ Top 1 Match: 13/33 ( 39.4% )
{ Top 2 Match: 19/33 ( 57.6% )
{ Top 3 Match: 23/33 ( 69.7% )
{ Top 4 Match: 25/33 ( 75.8% )
{ Black: Morphy, Paul }
{ Top 1 Match: 19/33 ( 57.6% )
{ Top 2 Match: 27/33 ( 81.8% )
{ Top 3 Match: 29/33 ( 87.9% )
{ Top 4 Match: 29/33 ( 87.9% )
Game 8
{ White: Morphy, Paul }
{ Top 1 Match: 21/38 ( 55.3% )
{ Top 2 Match: 29/38 ( 76.3% )
{ Top 3 Match: 32/38 ( 84.2% )
{ Top 4 Match: 33/38 ( 86.8% )
{ Black: Loewenthal, Johann Jacob }
{ Top 1 Match: 20/38 ( 52.6% )
{ Top 2 Match: 29/38 ( 76.3% )
{ Top 3 Match: 33/38 ( 86.8% )
{ Top 4 Match: 34/38 ( 89.5% )
Morphy 1858 games vs Loewenthal, Anderssen & Harrwitz.
Each game has a minimum 35 moves. This is so that a reasonable sample of non-theory moves can be generated in the more closely contested games.
There are 23 Morphy games in the batch. I didn't cherry-pick Morphy's best games - those that meet this basic selection criteria are all here, including several draws & a few losses.
I selected these because they were played against Morphy's strongest opponents (not including the perpetually *ahem* busy Staunton) during his crushing European tour when Morphy was at the peak of his powers.
The games were then auto-analysed for top 1, 2, 3 & 4 engine choice moves once out of the onboard 4m game database.
Cumulative results for the very best modern OTB Super GM's when using this technique are consistently Top 1 match =60%, Top 2 match =75%, Top 3 match =85% & Top 4 match just under 90% for sample sizes of typically 700-1000 non-database moves. History is always tapping you on the shoulder. I couldn't resist analysing the Morphy games!
The system used is for this analysis is a pretty fast quad-core pc with Houdini 1.5a 4x CPU, rated about 3200 Elo.
Here are the games. I will add the results for each one & then the cumulative engine match rates at the end:
Game 1
{ White: Loewenthal, Johann Jacob }
{ Top 1 Match: 19/42 ( 45.2% )
{ Top 2 Match: 28/42 ( 66.7% )
{ Top 3 Match: 30/42 ( 71.4% )
{ Top 4 Match: 33/42 ( 78.6% )
{ Black: Morphy, Paul }
{ Top 1 Match: 20/42 ( 47.6% )
{ Top 2 Match: 31/42 ( 73.8% )
{ Top 3 Match: 36/42 ( 85.7% )
{ Top 4 Match: 38/42 ( 90.5% )
Game 2
{ White: Loewenthal, Johann Jacob }
{ Top 1 Match: 28/67 ( 41.8% )
{ Top 2 Match: 38/67 ( 56.7% )
{ Top 3 Match: 50/67 ( 74.6% )
{ Top 4 Match: 59/67 ( 88.1% )
{ Black: Morphy, Paul }
{ Top 1 Match: 35/67 ( 52.2% )
{ Top 2 Match: 47/67 ( 70.1% )
{ Top 3 Match: 53/67 ( 79.1% )
{ Top 4 Match: 60/67 ( 89.6% )
Game 3
{ White: Loewenthal, Johann Jacob }
{ Top 1 Match: 31/61 ( 50.8% )
{ Top 2 Match: 41/61 ( 67.2% )
{ Top 3 Match: 44/61 ( 72.1% )
{ Top 4 Match: 48/61 ( 78.7% )
{ Black: Morphy, Paul }
{ Top 1 Match: 31/60 ( 51.7% )
{ Top 2 Match: 41/60 ( 68.3% )
{ Top 3 Match: 48/60 ( 80.0% )
{ Top 4 Match: 52/60 ( 86.7% )
Game 4
{ White: Morphy, Paul }
{ Top 1 Match: 30/54 ( 55.6% )
{ Top 2 Match: 39/54 ( 72.2% )
{ Top 3 Match: 42/54 ( 77.8% )
{ Top 4 Match: 45/54 ( 83.3% )
{ Black: Loewenthal, Johann Jacob }
{ Top 1 Match: 35/55 ( 63.6% )
{ Top 2 Match: 43/55 ( 78.2% )
{ Top 3 Match: 48/55 ( 87.3% )
{ Top 4 Match: 52/55 ( 94.5% )