voroskoi/pistike - Change M5SO7SVRCGI7G2DC43GNVFQB2IFEIXT62AFDB3CVGTCOCUKHPF5AC

Enhance NNUE evaluation with fifty-rule

Created by voroskoi on February 2, 2023

M5SO7SVRCGI7G2DC43GNVFQB2IFEIXT62AFDB3CVGTCOCUKHPF5AC

Dependencies

In channels

main

Change contents

Replacement in src/nnue.zig at line 106 [6.33]

B:BD[5.1294] → [5.1294:1388]

    return @intCast(isize, nnue.nnue_evaluate(@enumToInt(gs.side), &sf_pieces, &sf_squares));

[5.1294]

[5.1388]

    return @intCast(isize, nnue.nnue_evaluate(
        @enumToInt(gs.side),
        &sf_pieces,
        &sf_squares,
    )) * @divTrunc(100 - gs.fifty, 100);

Replacement in src/Search.zig at line 92 [7.35]

B:BD[4.86] → [4.86:184]

                    @max(options.movestogo -| self.state.history.count(), 5) - 50 + options.winc,

[4.86]

[4.184]

                    @max(options.movestogo -| self.state.history.count(), 5) -| 50 + options.winc,

Replacement in src/Search.zig at line 94 [7.35]

B:BD[4.242] → [4.242:340]

                    @max(options.movestogo -| self.state.history.count(), 5) - 50 + options.binc,

[4.242]

[8.762]

                    @max(options.movestogo -| self.state.history.count(), 5) -| 50 + options.binc,

Insertion in src/Search.zig at line 104 [7.35]

[9.1232]

[10.332]

        std.log.debug("Start searching: ply: {d} fifty: {d} history_length: {d}", .{
            self.ply,
            self.state.fifty,
            self.state.history.count(),
        });

Deletion in src/Search.zig at line 128 [7.35]

B:BD[11.410] → [3.186:337]


        std.log.debug("Start searching: ply: {d} history_length: {d}\n", .{
            self.ply,
            self.state.history.count(),
        });

Replacement in src/Search.zig at line 199 [7.35]

B:BD[12.727] → [13.791:851]

        if (self.state.history.contains(self.state.hash)) {

[12.727]

[12.786]

        if (self.state.fifty >= 100 or self.state.history.contains(self.state.hash)) {

Insertion in src/Board.zig at line 206 [14.16071]
[14.20370]
[15.2977]
```
    fifty: u7 = 0,
```
Insertion in src/Board.zig at line 262 [14.16071]
[2.715]
[14.21406]
```
        new_gs.fifty = self.fifty;
```
Insertion in src/Board.zig at line 276 [14.16071]
[2.746]
[14.21755]
```
        self.fifty = bck.fifty;
```

Insertion in src/Board.zig at line 410 [14.16071]

[15.3126]

        const fifty = parts.next().?;
        self.fifty = std.fmt.parseUnsigned(u7, fifty, 10) catch 0;

Insertion in src/Board.zig at line 782 [14.16071]

[2.994]

[16.2568]


                if (move.piece == .P or move.piece == .p) {
                    self.fifty = 0;
                } else {
                    self.fifty += 1;
                }

Insertion in src/Board.zig at line 811 [14.16071]
[17.1255]
[17.1255]
```
                        self.fifty = 0;
```