[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Daniuszewski, Dawid"]
[Black "Kuczynski, Michal"]
[Result "1-0"]
[ECO "D31"]
[EventDate "1907.??.??"]
[PlyCount "47"]

1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 Bd6 5.e4 dxe4 6.Nxe4 Nf6 7.Bd3 Bb4+ 8.Bd2 
Qa5 9.Nd6+ Ke7 10.c5 b6 11.Nc4 Bxd2+ 12.Nfxd2 Qa6 13.Qf3 Qb7 14.O-O Na6 
15.Nd6 Qb8 16.Qxc6 Nb4 17.Qf3 Nxd3 18.Qxd3 Bb7 19.N2c4 Rd8 20.Qa3 Bd5 21.
Ne5 bxc5 22.dxc5 a5 23.Nexf7 Rf8 24.Ne5 1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Daniuszewski, Dawid"]
[Black "Mund, August"]
[Result "1/2-1/2"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

1/2-1/2

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Daniuszewski, Dawid"]
[Black "Rotlewi, Gersz"]
[Result "1/2-1/2"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

1/2-1/2

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Daniuszewski, Dawid"]
[Black "Rubinstein, Akiba"]
[Result "1-0"]
[ECO "D61"]
[EventDate "1907.??.??"]
[PlyCount "59"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 Be7 6.Nf3 O-O 7.Qc2 b6 8.cxd5 
exd5 9.Bd3 Bb7 10.O-O-O Ne4 11.h4 f5 12.g4 $3 c5 13.gxf5 Nd6 14.f6 Nxf6 
15.Bxf6 Bxf6 16.Bxh7+ Kh8 17.Ng5 cxd4 18.exd4 Qd7 19.Bg6 $1 Rfc8 20.Qe2 
Nf5 21.Qg4 Rxc3+ 22.bxc3 Qc7 23.Qxf5 Qxc3+ 24.Qc2 Qa1+ 25.Qb1 Qc3+ 26.Bc2 
Rc8 27.Qb2 Qa5 28.Nf7+ Kg8 29.Nd6 Rxc2+ 30.Kxc2 1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Daniuszewski, Dawid"]
[Black "Salwe, Henryk"]
[Result "1-0"]
[ECO "D61"]
[EventDate "1907.??.??"]
[PlyCount "115"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Qc2 a6 $2 8.c5 
Re8 9.Bd3 Nf8 10.O-O Nh5 11.Bf4 $1 f5 12.h3 Nxf4 13.exf4 g5 14.fxg5 Bxg5 
15.Nxg5 Qxg5 16.f4 Qf6 17.Ne2 Re7 18.Kh1 Rg7 19.b4 Bd7 20.a4 Be8 21.Qb2 
Bh5 22.Ng1 Qh4 23.Qf2 Qg3 24.Qxg3 Rxg3 25.Ra3 Kg7 26.Kh2 Re3 27.g3 b6 28.
c6 a5 $1 29.b5 Rd8 30.Kg2 Re4 31.Bxe4 dxe4 32.Kf2 Rxd4 33.Ke3 Rd5 34.Rc1 
Kf6 35.Ne2 Bf7 36.g4 h5 37.Ng3 h4 38.Nf1 Ng6 39.Nd2 Ne7 40.Ke2 Rd8 41.Nc4 
Nd5 42.Rf1 Bg6 43.Ne3 Nb4 44.Rd1 Nd3 $2 45.g5+ Ke7 46.Rdxd3 Bh5+ 47.Kd2 
exd3 48.Rxd3 Rxd3+ 49.Kxd3 Kd6 50.Kd4 e5+ 51.fxe5+ Ke6 52.Ng2 Bd1 53.Nf4+ 
Ke7 54.Nd5+ Kf7 55.Nxc7 Bxa4 56.e6+ Ke7 57.Ke5 Bb3 58.Nd5+ 1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Kuczynski, Michal"]
[Black "Daniuszewski, Dawid"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

0-1

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Kuczynski, Michal"]
[Black "Mund, August"]
[Result "1-0"]
[ECO "C97"]
[EventDate "1907.??.??"]
[PlyCount "69"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 Na5 
9.Bc2 c5 10.d4 Qc7 11.h3 O-O 12.Nbd2 Bd7 13.Nf1 Rfc8 14.d5 Nc4 15.Ng3 Nb6 
16.Nh2 Re8 17.Nhf1 Bc8 18.Ne3 Nbd7 19.Nef5 Nf8 20.Be3 a5 21.a4 b4 22.c4 
Ng6 23.Qd2 Bf8 24.b3 h6 25.f3 Kh7 26.h4 $1 Ne7 27.h5 Nfg8 28.f4 g6 29.Nxe7
Qxe7 30.fxe5 Qxe5 31.Qf2 Qf6 32.Bf4 Kh8 33.hxg6 fxg6 34.e5 $1 Qd8 35.Bxg6 
1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Kuczynski, Michal"]
[Black "Rotlewi, Gersz"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

0-1

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Kuczynski, Michal"]
[Black "Rubinstein, Akiba"]
[Result "0-1"]
[ECO "C48"]
[EventDate "1907.??.??"]
[PlyCount "96"]

1.e4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.Bb5 a6 5.Bxc6 dxc6 6.Nxe5 Nxe4 7.Nxe4 Qd4 8.
O-O Qxe5 9.d4 Qf5 10.Re1 Be6 11.Bg5 f6 12.Qe2 Kd7 13.Ng3 Qd5 14.Bf4 Re8 
15.b3 Bd6 16.Bxd6 cxd6 17.Qd2 c5 18.Rad1 Bf7 19.Re3 Rxe3 20.fxe3 cxd4 21.
Qb4 Bg6 22.Rxd4 Qc6 23.e4 Re8 24.h4 h5 25.a4 Re5 26.Rc4 Rc5 27.Rxc5 Qxc5+ 
28.Qxc5 dxc5 29.a5 c4 30.Kf2 cxb3 31.cxb3 Kc6 32.Ke3 Kb5 33.Kd4 Kxa5 34.
Kc5 b6+ 35.Kc4 Bf7+ 36.Kc3 g6 37.Ne2 Kb5 38.Nf4 Kc5 39.b4+ Kd6 40.Kd4 a5 
41.Nd3 a4 42.e5+ fxe5+ 43.Nxe5 a3 44.Nxf7+ Ke7 45.Kc3 Kxf7 46.Kb3 Kf6 47.
Kxa3 Kf5 48.Kb3 Kg4 0-1

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Kuczynski, Michal"]
[Black "Salwe, Henryk"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

0-1

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Mund, August"]
[Black "Daniuszewski, Dawid"]
[Result "0-1"]
[ECO "C47"]
[EventDate "1907.??.??"]
[PlyCount "50"]

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bc4 Nxe4 5.Nxe4 d5 6.Bb5 dxe4 7.Nxe5 Qd5 8.
Bxc6+ bxc6 9.d4 Ba6 10.c3 Rd8 11.Ng4 Be7 12.Ne3 Qe6 13.Qb3 Qg6 14.c4 Rxd4 
15.Qa4 Bb5 $1 16.Qc2 Bb4+ 17.Kf1 Ba6 18.a3 Be7 19.Qa4 Bb5 20.Qc2 Ba6 21.
Qa4 Bc8 22.Qxa7 Qd6 23.Ke1 f5 24.Qa4 f4 25.Nd5 Qxd5 0-1

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Mund, August"]
[Black "Kuczynski, Michal"]
[Result "1-0"]
[ECO "D61"]
[EventDate "1907.??.??"]
[PlyCount "95"]

1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Bg5 Nbd7 5.Nc3 Be7 6.e3 O-O 7.Qc2 c6 8.Bd3 
dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Qxc3 c5 13.Rfd1 b6 14.Bb5 Rd8 
15.dxc5 Nxc5 16.Rxd8+ Qxd8 17.b4 $1 Ba6 18.Bxa6 Nxa6 19.Rc1 Qd6 20.a3 Rd8 
21.Kf1 f6 22.Nd4 Qd5 23.Qc4 Qxc4+ 24.Rxc4 e5 25.Nb5 Rd7 26.Rc8+ Kf7 27.Ra8
Ke6 28.Nxa7 Kd5 $2 29.Nc8 Nc7 30.Nxb6+ Kc6 31.Nxd7 Nxa8 32.Nc5 Kb5 33.Ke2 
Nc7 34.Kd3 f5 35.Kc3 Nd5+ 36.Kb3 e4 37.a4+ Kc6 38.Ne6 g6 39.a5 Nf6 40.Kc4 
Ng4 41.b5+ Kd6 42.a6 Ne5+ 43.Kd4 Nd7 44.a7 Nb6 45.Nc5 Na8 46.Na4 h5 47.b6 
Kc6 48.h4 1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Mund, August"]
[Black "Rotlewi, Gersz"]
[Result "0-1"]
[ECO "C84"]
[EventDate "1907.??.??"]
[PlyCount "88"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Be7 7.Nc3 d6 8.h3 O-O 
9.d3 Na5 10.Re1 c5 11.Bd5 Nxd5 12.Nxd5 f5 13.Nh2 f4 14.c4 Nc6 15.cxb5 axb5
16.Bd2 Be6 17.Nf3 Bf6 18.a3 $2 Bxd5 19.exd5 Ne7 20.Bc3 Kh8 21.Qb3 Qb6 22.
Nd2 Qb7 23.Ne4 Rfd8 24.g4 Nxd5 25.g5 Be7 26.Kh2 Rf8 27.Rg1 Nc7 28.g6 h6 
29.Qd1 Rf5 30.Qg4 Raf8 31.b4 c4 32.Qf3 d5 33.Nc5 Bxc5 34.bxc5 cxd3 35.Qxd3
e4 36.Qc2 Ne6 37.c6 Qc7 $2 38.a4 Rh5 39.f3 Ng5 40.Rxg5 Rxg5 41.axb5 Rg3 
42.Rg1 Qc8 43.Rg2 Qxh3+ 44.Kg1 exf3 0-1

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Mund, August"]
[Black "Rubinstein, Akiba"]
[Result "1/2-1/2"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

1/2-1/2

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Mund, August"]
[Black "Salwe, Henryk"]
[Result "1/2-1/2"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

1/2-1/2

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Rotlewi, Gersz"]
[Black "Daniuszewski, Dawid"]
[Result "1/2-1/2"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

1/2-1/2

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Rotlewi, Gersz"]
[Black "Kuczynski, Michal"]
[Result "0-1"]
[ECO "B45"]
[EventDate "1907.??.??"]
[PlyCount "56"]

1.e4 c5 2.d4 cxd4 3.Nf3 e6 4.Nxd4 Nf6 5.Nc3 Bb4 6.Bd3 Nc6 7.Be3 d5 8.Nxc6 
bxc6 9.e5 Nd7 10.Qg4 Bf8 11.f4 f5 12.Qf3 Nc5 13.Qf2 Qa5 14.O-O Nxd3 15.
cxd3 c5 16.d4 cxd4 17.Bxd4 Be7 18.Nb1 $5 O-O 19.Nd2 Ba6 20.Nb3 Qa4 21.Rfc1
Rfc8 22.Bc5 $2 Bd8 $1 23.Nd4 Kf7 24.g4 $2 Rxc5 $1 25.Rxc5 Bb6 26.Rac1 Rc8 
27.Nf3 Qxf4 28.gxf5 Qxc1+ 0-1

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Rotlewi, Gersz"]
[Black "Mund, August"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Rotlewi, Gersz"]
[Black "Rubinstein, Akiba"]
[Result "0-1"]
[ECO "D37"]
[EventDate "1907.??.??"]
[PlyCount "54"]

1.d4 d5 2.Nf3 e6 3.c4 Nf6 4.Nc3 Be7 5.Bf4 O-O 6.c5 $2 Ne4 $1 7.Qc2 f5 8.b4
g5 9.Be5 g4 10.Nd2 Nc6 11.a3 Nxe5 12.dxe5 a5 13.Rb1 axb4 14.axb4 c6 15.e3 
Nxd2 16.Qxd2 b6 17.cxb6 Qxb6 18.Qd4 Qc7 $1 19.Be2 Ra3 20.O-O c5 21.Nb5 
cxd4 22.Nxc7 d3 $1 23.Bd1 Bd7 24.b5 Rb8 25.Bb3 Bd8 26.Rfc1 d2 27.Rc3 Bxc7 
0-1

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Rotlewi, Gersz"]
[Black "Salwe, Henryk"]
[Result "1-0"]
[ECO "D55"]
[EventDate "1907.??.??"]
[PlyCount "89"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.Nf3 O-O 6.e3 Ne4 7.Bxe7 Qxe7 8.Qb3 
c6 9.Bd3 f5 10.O-O Nd7 11.Rad1 Kh8 12.Nd2 Ndf6 13.f3 Nxd2 14.Rxd2 e5 $2 
15.cxd5 $1 exd4 16.exd4 Qe3+ 17.Rff2 Qxd4 18.Bxf5 Qe5 19.Be4 cxd5 20.Nxd5 
Be6 21.Qc3 $1 Qxc3 22.Nxc3 Rf7 23.Rd6 Re8 24.Re2 Bc4 25.Bd5 $1 Rxe2 26.
Nxe2 Bxd5 27.Rd8+ Ng8 28.Rxd5 g6 29.Nc3 Kg7 30.Kf2 Nf6 31.Rd4 Rc7 32.Ke3 
Kf7 $2 33.Rf4 $1 Ke7 34.Rxf6 Rxc3+ 35.bxc3 Kxf6 36.Ke4 Ke6 37.f4 h5 38.h3 
h4 39.Kf3 Kf5 40.g4+ hxg3 41.Kxg3 b5 42.Kf3 a6 43.h4 a5 44.a3 a4 45.Kg3 $1
1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Rubinstein, Akiba"]
[Black "Daniuszewski, Dawid"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Rubinstein, Akiba"]
[Black "Kuczynski, Michal"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Rubinstein, Akiba"]
[Black "Mund, August"]
[Result "1-0"]
[ECO "C33"]
[EventDate "1907.??.??"]
[PlyCount "35"]

1.e4 e5 2.f4 exf4 3.Bc4 Nf6 4.Nc3 Bb4 5.Nf3 d6 6.O-O O-O 7.Nd5 $1 c6 $6 8.
Nxb4 Qb6+ 9.d4 Qxb4 10.Bd3 Re8 $4 11.c3 Qb6 12.Bxf4 d5 13.e5 Ne4 14.Ng5 $1
Nxg5 15.Bxg5 Rxe5 16.Bxh7+ $1 Kf8 17.Rxf7+ $1 Kxf7 18.Qh5+ 1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Rubinstein, Akiba"]
[Black "Rotlewi, Gersz"]
[Result "1-0"]
[ECO "D26"]
[EventDate "1907.??.??"]
[PlyCount "29"]

1.d4 d5 2.c4 e6 3.Nc3 dxc4 4.e3 Nf6 5.Bxc4 c5 6.Nf3 Nc6 7.O-O a6 $2 8.Qe2 
cxd4 9.Rd1 Be7 10.exd4 O-O 11.Bf4 b5 12.d5 $1 exd5 13.Bxd5 Nxd5 14.Nxd5 
Bd7 15.Bc7 1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Rubinstein, Akiba"]
[Black "Salwe, Henryk"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Salwe, Henryk"]
[Black "Daniuszewski, Dawid"]
[Result "1/2-1/2"]
[ECO "C48"]
[EventDate "1907.??.??"]
[PlyCount "78"]

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 a6 5.Bxc6 dxc6 6.O-O Bg4 7.d3 Bd6 8.Bg5 
Qd7 9.Bxf6 gxf6 10.Qe2 Bc5 11.Nd1 O-O-O 12.Ne3 h5 13.Kh1 Rdg8 14.Rg1 Rg7 
15.Rad1 Qe6 16.a3 Kb8 17.c4 Qc8 18.b4 Bd4 19.Rb1 Qd7 20.a4 Rd8 21.Rb3 f5 
$1 22.exf5 f6 $1 23.a5 Bxe3 24.fxe3 Qxf5 25.e4 Bxf3 26.Qxf3 Qxf3 27.gxf3 
Rdg8 28.Rxg7 Rxg7 29.Rb1 Kc8 30.Rd1 Kd8 31.Rg1 Rxg1+ 32.Kxg1 c5 $1 33.b5 
Ke7 34.Kf2 Kf7 35.Kg3 Kg6 36.f4 c6 37.bxc6 bxc6 38.Kf3 Kh6 39.Kg2 Kg7 
1/2-1/2

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Salwe, Henryk"]
[Black "Kuczynski, Michal"]
[Result "1-0"]
[EventDate "1907.??.??"]
[PlyCount "29"]
[SetUp "1"]
[FEN "6k1/2nq2pp/pp6/4P3/2rPQ3/4B3/PP5P/3R2K1 w - - 0 29"]

29.b3 $3 Rc3 30.d5 $1 Rxe3 31.e6 Nxe6 32.Qxe3 Nc5 33.Qf3 h6 34.Rf1 Qe7 35.
Kh1 a5 36.Qf5 Qh4 37.Qf4 Qe7 38.d6 Qb7+ 39.Qf3 Qc8 40.Qf7+ Kh7 41.Qf5+ 
Qxf5 42.Rxf5 Kg6 43.Rxc5 1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Salwe, Henryk"]
[Black "Mund, August"]
[Result "0-1"]
[ECO "D61"]
[EventDate "1907.??.??"]
[PlyCount "67"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 Be7 6.Nf3 O-O 7.Qc2 b6 8.cxd5 
exd5 9.Rd1 a6 10.Bd3 Bb7 11.Ne5 $3 h6 12.Bf4 c5 13.O-O c4 14.Bf5 b5 15.a3 
Re8 16.Bg3 Nf8 17.f4 Qb6 $1 18.Be1 a5 19.Qe2 b4 20.Nb1 Bc8 $1 21.Bxc8 
Rexc8 22.Qc2 Ne4 23.g4 $2 bxa3 24.bxa3 Qb3 25.Qxb3 cxb3 26.Nd3 Rc2 27.Nf2 
Nxf2 28.Rxf2 Bh4 29.Rfd2 Bxe1 30.Rxe1 Rac8 31.Kf1 Nd7 32.Ke2 Nf6 33.Kd3 
Ne4 34.Rde2 {The source ends here. Comment in the book: "Czarne daja mata 
w 2 ruchach" / "Black mates in two moves."} 0-1

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Salwe, Henryk"]
[Black "Rotlewi, Gersz"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

1-0

[Event "Lodz it"]
[Site "Lodz RUE"]
[Date "1907.??.??"]
[Round "?"]
[White "Salwe, Henryk"]
[Black "Rubinstein, Akiba"]
[Result "1/2-1/2"]
[ECO "A00"]
[EventDate "1907.??.??"]
[PlyCount "0"]

1/2-1/2

