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⚖️ Remove double pawns penalty [proper SPRT pawn eval] #746

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merged 4 commits into from
May 16, 2024
Merged

⚖️ Remove double pawns penalty [proper SPRT pawn eval] #746

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f015e56
Remove pawn additional evaluation
eduherminio May 15, 2024
7f76db8
Remove double pawns
eduherminio May 15, 2024
de329a0
Add tuned values
eduherminio May 16, 2024
dfecfc1
Cleanup
eduherminio May 16, 2024
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56 changes: 26 additions & 30 deletions src/Lynx.Cli/appsettings.json
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Original file line number Diff line number Diff line change
Expand Up @@ -58,21 +58,17 @@
"FP_Margin": 250,

// Evaluation
"DoubledPawnPenalty": {
"MG": -6,
"EG": -12
},
"IsolatedPawnPenalty": {
"MG": -17,
"EG": -13
"MG": -21,
"EG": -17
},
"OpenFileRookBonus": {
"MG": 47,
"EG": 10
"MG": 46,
"EG": 9
},
"SemiOpenFileRookBonus": {
"MG": 18,
"EG": 17
"MG": 15,
"EG": 15
},
"BishopMobilityBonus": {
"MG": 10,
Expand All @@ -84,22 +80,22 @@
},
"QueenMobilityBonus": {
"MG": 4,
"EG": 7
"EG": 8
},
"SemiOpenFileKingPenalty": {
"MG": -36,
"EG": 24
"MG": -41,
"EG": 21
},
"OpenFileKingPenalty": {
"MG": -105,
"EG": 8
"MG": -110,
"EG": 10
},
"KingShieldBonus": {
"MG": 16,
"EG": -6
"MG": 17,
"EG": -5
},
"BishopPairBonus": {
"MG": 31,
"MG": 33,
"EG": 80
},
"PassedPawnBonus": {
Expand All @@ -108,28 +104,28 @@
"EG": 0
},
"Rank1": {
"MG": -2,
"EG": 7
"MG": 4,
"EG": 12
},
"Rank2": {
"MG": -15,
"EG": 13
"MG": -11,
"EG": 19
},
"Rank3": {
"MG": -14,
"EG": 41
"MG": -11,
"EG": 47
},
"Rank4": {
"MG": 20,
"EG": 74
"MG": 21,
"EG": 80
},
"Rank5": {
"MG": 60,
"EG": 150
"MG": 62,
"EG": 158
},
"Rank6": {
"MG": 98,
"EG": 217
"MG": 104,
"EG": 243
},
"Rank7": {
"MG": 0,
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30 changes: 14 additions & 16 deletions src/Lynx/Configuration.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -203,36 +203,34 @@ public sealed class EngineSettings

#region Evaluation

public TaperedEvaluationTerm DoubledPawnPenalty { get; set; } = new(-6, -12);
public TaperedEvaluationTerm IsolatedPawnPenalty { get; set; } = new(-21, -17);

public TaperedEvaluationTerm IsolatedPawnPenalty { get; set; } = new(-17, -13);
public TaperedEvaluationTerm OpenFileRookBonus { get; set; } = new(46, 9);

public TaperedEvaluationTerm OpenFileRookBonus { get; set; } = new(47, 10);

public TaperedEvaluationTerm SemiOpenFileRookBonus { get; set; } = new(18, 17);
public TaperedEvaluationTerm SemiOpenFileRookBonus { get; set; } = new(15, 15);

public TaperedEvaluationTerm BishopMobilityBonus { get; set; } = new(10, 9);

public TaperedEvaluationTerm RookMobilityBonus { get; set; } = new(5, 5);

public TaperedEvaluationTerm QueenMobilityBonus { get; set; } = new(4, 7);
public TaperedEvaluationTerm QueenMobilityBonus { get; set; } = new(4, 8);

public TaperedEvaluationTerm SemiOpenFileKingPenalty { get; set; } = new(-36, 24);
public TaperedEvaluationTerm SemiOpenFileKingPenalty { get; set; } = new(-41, 21);

public TaperedEvaluationTerm OpenFileKingPenalty { get; set; } = new(-105, 8);
public TaperedEvaluationTerm OpenFileKingPenalty { get; set; } = new(-110, 10);

public TaperedEvaluationTerm KingShieldBonus { get; set; } = new(16, -6);
public TaperedEvaluationTerm KingShieldBonus { get; set; } = new(17, -5);

public TaperedEvaluationTerm BishopPairBonus { get; set; } = new(31, 80);
public TaperedEvaluationTerm BishopPairBonus { get; set; } = new(33, 80);

public TaperedEvaluationTermByRank PassedPawnBonus { get; set; } = new(
new(0, 0),
new(-2, 7),
new(-15, 13),
new(-14, 41),
new(20, 74),
new(60, 150),
new(98, 217),
new(4, 12),
new(-11, 19),
new(-11, 47),
new(21, 80),
new(62, 158),
new(104, 243),
new(0, 0));

#endregion
Expand Down
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