MultiPV go infinite finds only one checkmate

[ddugovic]

setoption name MultiPV value 2
position fen 3r2k1/1R3R1p/5p2/3p2pP/8/7K/PPr5/8 w - - 2 41
go infinite
...
info depth 42 seldepth 14 multipv 1 score mate 7 nodes 16461262 nps 1317111 hashfull 1000 tbhits 0 time 12498 pv f7g7 g8f8 g7h7 g5g4 h3g3 c2c7 b7c7 f8g8 c7g7 g8f8 h5h6 d8d7 h7h8
info depth 41 seldepth 48 multipv 2 score cp 7400 nodes 16461262 nps 1317111 hashfull 1000 tbhits 0 time 12498 pv h5h6 c2c4 h3g3 c4h4 f7g7 g8f8 g7h7 h4h6 h7h6 f8g8 g3g4 f6f5 g4f5 g5g4 b7h7 g8f8 h7h8 f8e7 h6h7 e7d6 h8d8 d6c5 f5g4 c5d4 h7c7 d4e4 c7d7 e4d3 a2a4 d3c2 d7d5 c2b1 a4a5 b1c2 a5a6 c2c1 a6a7 c1b1 a7a8q b1c2

[BM123499]

Not bug, just needed to wait a few more

info depth 53 seldepth 14 multipv 1 score mate 7 nodes 87851744 nps 1549468 hashfull 1000 tbhits 0 time 56698 pv f7g7 g8f8 g7h7 g5g4 h3g3 c2c7 b7c7 f8g8 c7g7 g8f8 h5h6 d8d7 h7h8
info depth 53 seldepth 62 multipv 2 score mate 60 nodes 87851744 nps 1549468 hashfull 1000 tbhits 0 time 56698 pv h5h6 c2c4 f7g7 g8f8 g7h7 c4h4 h3g3 h4h6 h7h6 f8g8 g3g4 f6f5 g4f5 g5g4 b7h7 g8f8 h7h8 f8e7 h6h7 e7d6 h8d8 d6c5 f5g4 c5d4 h7c7 d4e4 c7d7 e4d3 d7d5 d3c2 d5d2 c2c1 a2a4 c1b1 a4a5 b1c1 a5a6 c1b1 a6a7 b1a2

Or even more time

info depth 58 seldepth 14 multipv 1 score mate 7 nodes 171471910 nps 1588953 hashfull 1000 tbhits 0 time 107915 pv f7g7 g8f8 g7h7 g5g4 h3g3 c2c7 b7c7 f8g8 c7g7 g8f8 h5h6 d8d7 h7h8
info depth 58 seldepth 32 multipv 2 score mate 13 nodes 171471910 nps 1588953 hashfull 1000 tbhits 0 time 107915 pv h5h6 c2c4 f7g7 g8f8 g7h7 c4h4 h3g3 h4h6 h7h6 f8g8 g3g4 f6f5 g4f5 g5g4 h6g6 g8f8 f5e6 d8e8 e6f6 e8e7 b7e7 g4g3 e7f7 f8e8 g6g8

Searching with MultiPV will make your search slower.

Edit: I'm using dev build

[ddugovic]

Ah, thanks, building master from source I see a mate now:

info depth 53 seldepth 14 multipv 1 score mate 7 nodes 87851744 nps 1867120 hashfull 1000 tbhits 0 time 47052 pv f7g7 g8f8 g7h7 g5g4 h3g3 c2c7 b7c7 f8g8 c7g7 g8f8 h5h6 d8d7 h7h8
info depth 53 seldepth 62 multipv 2 score mate 60 nodes 87851744 nps 1867120 hashfull 1000 tbhits 0 time 47052 pv h5h6 c2c4 f7g7 g8f8 g7h7 c4h4 h3g3 h4h6 h7h6 f8g8 g3g4 f6f5 g4f5 g5g4 b7h7 g8f8 h7h8 f8e7 h6h7 e7d6 h8d8 d6c5 f5g4 c5d4 h7c7 d4e4 c7d7 e4d3 d7d5 d3c2 d5d2 c2c1 a2a4 c1b1 a4a5 b1c1 a5a6 c1b1 a6a7 b1a2