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# The Bishops Conversion Rule

There are several chess variants that have their opening setup with the bishops of each player on squares of the same color. This has often been seen as a disadvantage, and solutions have been sought to correct the situation. For instance, Fischer requires in his version of Randomized Chess that bishops start on squares of a different color. Others do not see the bishops on squares of the same color as a problem, or find it a good change to the orthodox chess practice.

One possible solution for chess variants that start the game on squares of the same color is a rule, that was proposed by Carlos Cetina from México. In 1983 he thought up a chess variant, at that time unaware from the existence of most other chess variants, and also unaware that his proposal differed only by the `Bishops Conversion Rule' from an existing commercial game. Here, this Bishops Conversion Rule is explained, and a few variants where the rule could be added are mentioned. I played one game with this rule, and think it works quite well, and gives an improvement over a game where bishops remain the entire game on squares of the same color. (I must admit I clearly was outclassed by my opponent in that game...).

## Bishops Conversion Rule

Bishops have, in addition to their normal movement, one extra possibility (which is, in a certain sense, also obligatory): the bishop moves one square horizontally or vertically. This may be done only once, with one of the players bishops. Also, for one of the bishops of the player, the first move made with this bishop must be of this special type. This move is called conversion. Note that a player may choose which bishop he converts, but if he makes a normal move with one of his bishops, the first move made with the other bishop must be a conversion move. Note also that a player never can make more than one conversion move in a game, and a promoted bishop does not make conversion moves. It is possible to take a piece of the opponent by conversion.

Those interested in playing one of the games mentioned below by email with Carlos Cetina are invited to send an email to (email removed contact us for address) s.ujat.mx.

## Using the bishops conversion rule in combination with Ministers(tm) chess

Ministers(tm) chess is a commercial chess variant, whose rules one can find at the website of the publisher of this game. Some sample games where this game is combined with the bishops conversion rule can be found below.

### Sample games

In these sample games, castling moves are described by the movement of the king only.

GAME 1 [Carlos Cetina(CC) - Jose M. Zurita]:
1.e4 e6 2.d4 d6 3.c4 f6 4.Nc3 g6 5.f4 Ng7 6.Bc2 Bg8 7.Qd2 Qfd7 8.Kb1 Nd8 9.g4 b7 10.h3 Bb8 11.Bh2 Q9f7 12.Bb3 Kb9 13.Nf2 Ndf9 14.Nd3 Ne7 15.Qfg2 Qf8 16.Rif1 f5 17.d5 exd5 18.cxd5 fxg4 19.hxg4 h6 20.e5 Ne8 21.e6 Qd8 22.Bi3 a6 23.Ne4 Qb6 24.f5 gxf5 25.gxf5 Qd4 26.Bxe7 Qxe7 27.Qxg8 Nf6
(27. ... Qxe4 28.Rf4) 28.Nxf6 Q7xf6 29.Qc3 c7 30.Ba4 Ba7 31.Bd7+ Ka9 32.Qb3 Bb6 33.Rf4 Qe3 34.Re1 Qd2 35.e7 Rig9 36.Qd8 Rce9 37.Qxb6 Qxd3+ 38.Ka1 cxb6 39.Qxb6 Qh8 40.e8 Rxe8 41.Bxe8 Qxe8 42.Qxd6+ Qb8 43.Qxg9+ Ka8 44.d6 i6 45.f6 i5 46.f7 h5 47.f8 Qbxd6 48.Re8+ Ka7 49.Qg1+ Qb6 50.Qxb6+ Kxb6 51.Re1 Qd2 52.R4f1 Qxi2 53.f9=Q h4 54.Qf2+ Qxf2 55.Rxf2 h3 56.Rh2 i4 57.Ri1 Black resigns.

GAME 2 (Sergio Ramirez - CC):
1.e4 e6 2. f4 f6 3.d4 d6 4.c4 c6 5.Bge3 Nc7 6.Bc2 Bc8 7.Nc3 Qd8 8.Qd2 h7 9.Ng3 Bh8 10.Qfe2 Nf8 11.d5 Qfe8 12.dxc6 Kh9 13.Kh1 Qxc6 14.Rad1 Rad9 15.c5 d5 16.Ba4 Qb7 17.c6 Qb4 18.a3 Qbe7 19.exd5 exd5 20.Bb6 a7 21.Ba5 Qxe2 22.Qxe2 Qc9 23.Bxc7 bxc7 24.Rxd5 Rge9 25.Qf3 Qb9 26.b4 Be6 27.Rxd9 Nxd9 28.f5 Bc8 29.b5 Re5 30.Rf1 Ne7 31.Bc2 i6 32.a4 Bi7 33.Nce4 g7 34.Nc3 Re3 35.Qg4 Kh8 36.Rd1 Rxc3 37.Rd8+ Ng8 38.Qe2 Re3 39.Qc4 Re1+ 40.Nf1 Be6 41.fxe6 Qxe6 42.Qd3 f5 43.i4 Bg5 44.Bb3 Rxf1+ 45.Ki2 Qe1 46.Rxg8+ Ki7 47.Qg3 Ri1+ 48.Kh3 Qc1 49.Rxg7 Bf6 50.Rxh7+ Kxh7 51.Bg8+ Kh8 52.Qg6 Qg5 53.Qh7+ Kg9 54.Qh9+ Kf8 55.Qf9+ Kg7 56.Qf7+ Kh8 57.Qh7+ Kg9 draw.

GAME 3 (CC - Andres Carrera):
1.e4 f6 2.f4 e6 3.d4 d7 4.c4 Bb4+ 5.Nc3 Ng7 6.Qb3 Qf8 7.Bc2 Qh5 8.Ni3 Qa5 9.h3 Nd8 10.Bh2 Bd9 11.d5 Qfc5 12.Kb1 Bxc3 13.bxc3 b6 14.Bg1 Qca3 15.Qxa3 Qxa3 16.Bb3 Bg6 17.Qe2 c7 18.f5 Bh7 19.Ng4 Qe7 20.fxe6 dxe6 21.Ba4 exd5 22.Bd4 Qxe4+ 23.Qxe4+ Bxe4+ 24.Kb2 f5 25.Nf6 Kf8 26.cxd5 Nf7 27.Nxe4 fxe4 28.Bc2 Rie9 29.Rce1 Nd6 30.Rif1+ Kg9 31.g4 Rac9 32.Rf6 Rc8 33.Kc1 Rf8 34.Rxf8 Kxf8 35.Rf1+ Ke7 36.Bf6+ Kd7 37.Kd2 Rf9 38.Ke2 Rf7 39.Bb3 Nf9 40.a4 g7 41.Bg5 Rxf1 42.Kxf1 Ne7 43.Bf4 Ng6 44.Bg3 c6 45.dxc6+ Kxc6 46.Ke2 a6 47.Ke3 b5 48.axb5+ axb5 49.Kd4 h6 50.h4 i6 51.Bg8 Ne7 52.Bxd6 Kxd6 53.Bxi6 Nd5 54.Bf9 b4 55.cxb4 Nxb4 56.Kxe4 Nd5 57.g5 hxg5 58.hxg5 Ne7 59.Ba4 Ng6 60.i4 Nh4 61.Kf4 Ke7 62.Kg4 Ng2 63.Kh5 Nf4+ 64.Ki6 Kf7 65.Bc2 Kg8 66.Ki7 Nh3 67.g6 Ng5 68.i5 Nh3 69.i6 Ng5 70.Bb3+ Kg9 71.Bc4 Kf8 72.Be2 Kg8 73.Ki8 Ni4 74.i7 Nh6+ 75.Ki9 Kg9 76.Bc4 Ng8+ 77.Ki8 Nf6 78.Bb3 Ng4 79.Kh7 Kf8 80.i8 Ni5+ 81.Ki6 Black resigns.

GAME 4 (Miguel Sanchez Ficachi - CC):
1.e4 e6 2.d4 d6 3.f4 f6 4.c4 c6 5.g4 g6 6.Ng3 Ng7 7.Nc3 Nc7 8.Qdf3 Bc8 9.h4 Qd8 10.i3 Qfe8 11.Bh2 Kb9 12.Bc2 Bb7 13.Kb1 f5 14.exf5 c5 15.d5 gxf5 16.gxf5 exd5 17.Nxd5 Qf7 18.Nxc7+ Qdxc7 19.Qg4 Bc8 20.Qi4 Qxc4 21.Rie1 Qa7 22.Bb3 Qd3+ 23.Bc2 Qda6 24.a4 Bf8 25.Re3 Rie9 26.Rb3 d5 27.Nh5 c4 28.Rb5 d4 29.Nxg7 Bxg7 30.Qgg6 d3 31.Bd1 Bd7 32.Rb4 Qa5 33.Rbxc4 Qb7 34.f6 Rxc4 35.Rxc4 Qab6 36.Qig2 Bxf6 37.Qxb7 axb7 38.b3 Re1 39.Qxd3 Bg4 40.Rc1 Bxd1 41.Rxd1 Qf2 White resigns.

GAME 5 (CC - Jose M. Zurita):
1.e4 e6 2.d4 d6 3.c4 c6 4.Nc3 Nc7 5.f4 f6 6.Bc2 d5 7.h3 Bb4 8.Bh2 Bc8 9.Qfe2 Qf8 10.Nf2 Ba6 11.exd5 cxd5 12.Bd3 Qg7 13.Kh1 Nf8 14.a3 Be7 15.b4 f5 16.cxd5 Bxd3 17.Q1xd3 Nxd5 18.Na4 Kh9 19.Nc5 Bi3 20.Qdf3 Bxh2 21.Kxh2 Qxd4 22.Nxe6 Nxe6 23.Qxe6 Qxf4+ 24.Qxf4 Nxf4 25.Qxf5 Rf9 26.Qe4 Qd6 27.Rgd1 Qc7 (27. ... Nd3+!) 28.Rac1 Qg7 29.Ng4 b7 30.Rc8 Rae9 31.Re8 Qc7 32.Kh1 i7 33.Rf1 Rxe8 34.Qxe8 Re9 35.Qxa8 Nh5 36.Qf8 Ng3+ 37.Kg1 Nxi2+ 38.Kh1 Ng3+ 39.Kg1 Nxf1 40.Kxf1 Qc1+ 41.Kf2 Qe1+ 42.Kf3 Qf1+ 43.Nf2 Re2 44.Kg3 Re3+ 45.Kh2 Rxa3 46.Qc5 Ra2 47.Kg3 Qi1+ 48.Kf3 Ra3+ 49.Ke2 Qg3 50.Qc9+ Ki8 51.Qc2+ h7 52.Kf1 Ra1+ 53.Nd1 Qi1+ 54.Ke2 Qg1 55.g4 Qg2+ 56.Nf2 Rh1 57.Qa2 Kh8 58.Qb2+ g7 59.Qd4 h6 60.Qd8+ Kh7 61.Qd3+ Ki6 62.Qc3 Qf1+ 63.Ke3 Rxh3+ 64.Nxh3 Qxh3+ 65.Kd2 Qxc3+ 66.Kxc3 h5 White resigns.

GAME 6 (Juan C. Correa - CC):
1.d4 d6 2.c4 c6 3.Bc2 Nc7 4.Nc3 e6 5.e4 Bc8 6.f4 f6 7.Be3 Qde8 8.Qff3 Kb9 9.Ng3 g6 10.Kh1 h6 11.d5 h5 12.i3 i6 13.Ni2 exd5 14.cxd5 Qd7 15.f5 Ng7 16.dxc6 Q7e8 17.Bh6 Qh7 18.Bxg7 Qxg7 19.g4 Qxc6 20.Nh4 g5 21.gxh5 ixh5 22.Ng6 g4 23.Qg3 Ne6 24.Qh4 Nf8 25.Qxh5 Nxg6 26.fxg6 Ri5 27.Qh7 Qi9 28.Nd5 Bf8 29.Qf7 Rh9 30.Kg2 R5h5 31.Rh1 Qi4+ 32.Kf2 Qc5+ 33.Kg3 Qh3+ 34.Kf4 Bh6++

GAME 7 (CC - Abraham Acosta):
1.e4 e6 2.d4 d6 3.c4 c6 4.Nc3 f6 5.Bc2 g6 6.f4 Ng7 7.Qd2 Bg8 8.Nf2 Qf8 9.h3 Qde8 10.Bh2 Nd8 11.Qfe2 b7 12.Kb1 Kh9 13.g4 Bb8 14.Nd3 Bi6 15.e5 f5 16.exd6 Qxd6 17.Ne5 fxg4 18.hxg4 Ba7 19.Bxg6 Qef8 20.c5 Qde7 21.Ne4 Nf5 22.Ng5 Nh4 23.Bi4 Bh7+ 24.Nxh7 Qxh7+ 25.Ka1 Qi7 26.Bh5 Raf9 27.i3 Ni6 28.Ng6 Rxg6 29.Bxg6 Bb8 30.f5 Bxh2 31.Qxi7 hxi7 32.Qxh2+ Ki9 33.Rih1 Nh8 34.Qe5 exf5 35.gxf5 Qg9 36.Rh4 Ndf7 37.Bxf7 Rxf7 38.Rch1 Rh7 39.a3 Rxh4 40.Rxh4 i6 41.Rh6 Qg1+ 42.Ka2 Qg8+ 43.d5 i7 44.Re6 Ki8 45.Re8 Qxd5+ 46.Qxd5 cxd5 47.Rd8 d4 48.Rxd4 Nf7 49.Rd7 Ne5 50.Rd8+ Kh7 51.Rxa8 Kg7 52.Rb8 Kf6 53.Rxb7 Nd3 54.Rxi7 Nxc5 55.Rxi6+ Black resigns.

GAME 8 (Albino Lara - CC):
1.d4 d6 2.c4 c6 3.Nc3 Nc7 4.Bc2 Bc8 5.Qd2 Qd8 6.h3 h7 7.Bh2 Bh8 8.e3 Kb9 9.Kb1 e6 10.f3 f6 11.Nf2 g6 12.g4 Nf8 13.Qg2 f5 14.Rif1 Bb7 15.Nd3 Qfe8 16.Rce1 Rce9 17.Ne2 c5 18.Qg3 Qed9 19.dxc5 d5 20.cxd5 exd5 21.gxf5 gxf5 22.Nb4 Qf6 23.Nd4 Bc8 24.Qi5 Ng6 25.Qh5 Rif9 26.Ba4 Bd7 27.Bxc7 Bxa4 28.Bxe9 Rxe9 29.Qxf5+ Ka9 30.Qxf6 Bxf6 31.Nf5 Bb5 32.Qxd5 Qc9 33.Rf2 Re5 34.Qd6 Rxf5 35.Rd2 Rxf3 36.Nd5 Bh4 37.Rc1 Bc6 38.Nb6 Rxe3 39.Nd7 Bxd7 40.Qxd7 Re7 41.Qf5 Re5 42.Qf7 Ne7 43.Rcd1 Rxc5 44.Rd8 Rc1+ 45.Rxc1 Qxd8 46.Qh9+ Nd9 47.a3 a7 48.Rg1 Ka8 49.Rg9 Nc7 50.Qc4 Qd1+ 51.Ka2 Qd5 52.b3 Qxc4 53.bxc4 Bf6 54.Rg8 i6 55.h4 Ne6 56.Rg4 Ng7 57.i4 Kb7 58.Kb3 Nf5 59.h5 ixh5 60.ixh5 Ng7 61.Rg2 Be5 62.Rf2 Kc6 63.h6 Ne8 64.Rf8 Nf6 65.a4 Kd7 66.c5 Ke7 67.Rc8 Ng4 68.Rc9 Bf4 69.Rg9 Nf6 70.a5 Bxh6 71.a6 Kf8 72.Rb9 Bf4 73.Rc9 h6 74.Kc4 Be5 75.Kd3 Kg7 76.c6 Kg6 77.Kc4 Bc7 78.Kd4 h5 79.Rg9+ Kf5 80.Rh9 Bg3 81.Ke3 Kg4 82.Rg9+ Kh3 83.Rg6 Nd5+ 84.Kd4 Nb4 White resigns.

GAME 9 (CC - Ernesto Amezcua) Played by email/1997
1.e4 e7 2.d4 d6 3.c4 c6 4.Nc3 Ng7 5.h3 Nc7 6.Bh2 Qc8 7.Bc2 b7 8.Qd2 i7 9.Kb1 Bh9 10.e5 d5 11.cxd5 cxd5 12.e6 Qc6 13.Ba4 Qc4 14.Qxc4 dxc4 15.Nd5 Bi8+ 16.Ka1 Bb8 17.Nb6 Qd8 18.Nd7+ Kd9 19.Rxc4 Ngxe6 20.d5 Bf5 21.Nxb8+ Kc8 22.Nd7 b6 23.dxe6 b5 24.Rxc7+ Qxc7 25.Bxc7 Kxc7 26.Qf4+ Black resigns.

GAME 10 (Hans Bodlaender - CC) Played by email/1997
1.e4 e6 2.Nc3 c6 3.d4 d6 4.Bf4 Nc7 5.f3 f6 6.g4 Bc8 7.Qh3 Qd8 8.Ng3 Kb9 9.Bf1 g6 10.Bd3 Ng7 11.Qi3 e5 12.dxe5 g5 13.Be3 d5 14.f4 gxf4 15.Bxf4 Be7 16.exf6 Bxf6 17.Bxc7 Bxi3 18.Bxd8 Bxh2 19.Rf1 Bxg3+ 20.Kd2 Qi6 21.Bxc9 Bxg4 22.Be2 Qh6+ 23.Kd3 dxe4+ 24.Kc4 Be6+ 25.Kc5 Qe3+ 26.Kb4 Kxc9 27.Rf8 Rd9 White resigns.

## Ten-games Rematch Miguel Sanchez Ficachi (Sanfi) vs CC

Villahermosa, Mexico, 1997.

1st Game: Sanfi - CC
1.f4 f6 2.e4 e6 3.d4 d6 4.g4 g6 5.c4 c6 6.Nc3 Nc7 7.Ng3 Ng7 8.e5 Bc8 9.Bc2 Qfe8 10.Be3 Qdd8 11.Nge4 dxe5 12.dxe5 Kb9 13.Nxf6 Qxd1+ 14.Rxd1 Qf7 15.Qg2 Bb4 16.Kh1 Bxc3 17.bxc3 Nge8 18.g5 Nxf6 19.gxf6 h7 20.Rd8 Ba6 21.Rb1 Bxc4 22.R1xb8+ Ka9 23.Be4 Rid9 24.Qb2 Rxd8 25.Rxd8 Na6 26.Bc5 Qb7 27.Bd6+ Kb9 28.Qa3 Rc8 29.Rd9+ Rc9 30.Rxc9+ Kxc9 31.Be7+ Kc8 32.Qd6 Qd7 33.Qxc6+ Qxc6 34.Bxc6 Bd5+ 35.Bxd5 exd5 36.Kg2 Kd7 37.Kf3 Nc7 38.Ke3 Ne6 39.Bg9 Ke8 40.h4 i6 41.i4 Kf7 42.Bi7 Ke8 43.Kd3 Kd7 44.c4 d4 45.Ke4 a6 46.f5 gxf5+ 47.Kxf5 Nc5 48.Bg5 a5 49.a4 d3 50.Bd2 Nb3 51.e6+ Ke8 52.f7+ Kf9 53.Bh6 d2 54.Bxd2 Nxd2 55.c5 Nb3 56.Kf6 Nxc5 57.e7 Nxa4 58.Kg7 Nc5 59.e8+ Ke9 60.f8+ Kxe8 61.Kg8 Black resigns.

2nd Game: CC - Sanfi
1.e4 e6 2.d4 d6 3.c4 c6 4.Nc3 f6 5.f4 Nc7 6.Bc2 g6 7.h3 Ng7 8.Bh2 Qb7 9.Bb3 Bce7 10.Ng3 Kb9 11.Qd2 d5 12.Qfe2 dxe4 13.Ngxe4 Rd9 14.g4 Bg8 15.Kb1 f5 16.Nf2 Bc5 17.d5 cxd5 18.cxd5 Bb4 19.Qc2 exd5 20.Nd3 d4 21.Na4 Nd5 22.Nxb4 Nxb4 23.Bxg8 Qxg8 24.Qcc4 Qxc4 25.Rxc4 d3 26.Qd2 Nc2 27.Kc1 Rie9 28.Bi3 Qd5 29.Rxc2 Qxa2 30.Nc3 Qa1+ 31.Nb1 dxc2 32.Qxc2 Rc9 White resigns.

3rd Game: Sanfi - CC
1.e4 e6 2.f4 f6 3.d4 d6 4.g4 g6 5.c4 c6 6.Ng3 Ng7 7.Nc3 Nc7 8.Bge3 Bg8 9.Bc2 Qf8 10.Qh3 Kh9 11.Kh1 Qdc8 12.f5 g5 13.fxe6 Ncxe6 14.Nf5 Nxf5 15.gxf5 Nf4 16.Bxf4 gxf4 17.d5 Bd8 18.Q1f3 Bb6 19.Rg2 Bh7 20.dxc6 Rxg2 21.Qhxg2 Rg9 22.Qgh3 Qxc6 23.Nd5 Bd4 24.Bb3 Bxb2 25.Rd1 Be5 26.Nxf4 Bxf4 27.Qxf4 Qc5 28.i3 Bi6 29.Rf1 Qg7 30.Qxd6 b6 31.Qxc5 bxc5 32.Bd1 Bf9 33.Bf3 Bc6 34.e5 Bxf3+ 35.Qxf3 fxe5 36.Qd5+ Qg8 37.Rd1 Re9 38.Qxc5 Qe8 39.Rd6 Qf7 40.Qd5 Qxd5 41.cxd5 Rf9 42.f6 Kg8 43.Kg2 Kf7 44.Kf3 Re9 45.Ke4 Re8 46.a4 h6 47.h4 h5 48.Rc6 Re9 49.a5 i6 50.a6 Kg6 51.f7+ Kxf7 52.Rxi6 Kg7 53.Re6 Black resigns.

4th Game: CC - Sanfi
1.h3 d6 2.Bh2 e6 3.d4 f6 4.c4 c6 5.Nc3 Nc7 6.f4 g6 7.Nf2 Bce7 8.e4 Ng7 9.Bc2 Bg8 10.Qd2 Qb7 11.Qfe2 Kb9 12.Kh1 h6 13.f5 g5 14.fxe6 Ncxe6 15.d5 Nd8 16.dxc6 Nxc6 17.Nd5 Ne5 18.Nxe7 Qxe7 19.c5 Rxc5 20.Qb4 Qc6 21.Bb3 Bxb3 22.Qxb3 Rc9 23.Nd1 Rc2 24.Qe1 Qeb7 25.Qxb7 Qxb7 26.Bxe5 dxe5 27.Qe3 Ne6 28.Qb3 Qxb3 29.axb3 Nc5 30.Ne3 Rxb2 31.Rab1 Rxb3 32.Rxb3 Nxb3 33.Ng4 a6 34.Nxf6 a5 35.Nd7 a4 36.Nxc9 Kxc9 37.Rb1 b6 38.Rb2 Kb8 39.Ra2 b5 40.Kg1 Kb7 41.Kf2 Kb6 42.Ke3 Nc5 43.Kd2 Nxe4+ 44.Kd3 Nc5+ 45.Kc3 e4 46.Kb4 Nd3+ 47.Kc3 Kc5 48.Ra1 b4+ 49.Kc2 b3+ 50.Kc3 b2 51.Rd1 Kb5 52.g4 a3 53.Kb3 Nc1+ 54.Kc2 Kc4 55.Rd8 Nd3 56.Ra8 Nb4+ 57.Kb1 e3 58.Rxa3 Nd3 59.Ra8 e2 60.Rc8+ Kb3 White resigns.

5th Game: Sanfi - CC
1.e4 e6 2.f4 f6 3.g4 g6 4.d4 d6 5.c4 c6 6.Ng3 Ng7 7.Bge3 Nc7 8.Nc3 Bge7 9.Bc2 Bc8 10.Qh3 Qd8 11.Kh1 Qh7 12.Qi4 Kb9 13.b4 e5 14.dxe5 fxe5 15.f5 gxf5 16.exf5 Qhg8 17.c5 d5 18.Bb3 Qh7 19.Na4 Rig9 20.Qe2 Rce9 21.Rad1 Ni6 22.Qh5 Qf9 23.Bh6 Bf8 24.Bxf8 Qdxf8 25.Nb6 Ng5 26.Nxc8 Qxc8 27.h4 i6 28.Qh6 Nf7 29.Qf6 Qh7 30.i3 Ne8 31.Qe6 Qxe6 32.fxe6 Ng5 33.Qxe5 Nc7 34.Qf5 Rxe6 35.Bc2 Qh6 36.Ki2 Kc9 37.hxg5 Qxg5 38.Qxg5 Rxg5 39.Bf5 Re3 40.Rde1 Ra3 41.Re2 h6 42.Ni4 Ri5 43.Rg3 Ra4 44.Nxh6 Rxb4 45.Re9+ Nd9 46.Bg6 Black resigns.

6th Game: CC - Sanfi
1.e4 e6 2.d4 d6 3.c4 c6 4.Nc3 f6 5.f4 g6 6.g4 Nc7 7.Ng3 Ng7 8.Bce3 Bce7 9.Bg2 Bg8 10.Qf2 Qb7 11.Qde2 Kb9 12.Kh1 h6 13.Rgb1 i6 14.b4 h5 15.a4 hxg4 16.f5 g5 17.b5 e5 18.c5 Nh5 19.d5 cxd5 20.c6 Qbd9 21.exd5 Nxg3+ 22.Qxg3 Qh9 23.Rd1 Qdh5 24.Qexg4 Qxg4 25.Qxg4 Qh5 26.Bf3 Rih9 27.Qxh5 ixh5 28.a5 g4 29.Be2 Bi6 30.b6 Nd9 31.Rg1 Bf8 32.Ne4 Ne7 33.Nxf6 Nxf5 34.Bf2 Bf9 35.Nxg4 hxg4 36.Bxg4 Bh7 37.Bh4 Rcg9 38.Bh3 Ka9 39.Bd8 Ne3 40.Rxg9+ Rxg9 41.c7 Be4+ 42.Ki1 Ng2+ 43.Bxg2 Bxg2 44.c8 Bxd5 45.c9=Q+ Rxc9 46.Bxc9 Kb9 47.Bg5 b7 48.Rf1 Bg7 49.Rd1 Black resigns.

7th Game: Sanfi - CC
1.e4 e6 2.f4 f6 3.g4 g6 4.d4 d6 5.c4 c6 6.Ng3 Ng7 7.Nc3 Nc7 8.Bge3 Bge7 9.Bc2 Bc8 10.Qi4 Qfe8 11.Kh1 Qdd8 12.b4 Kb9 13.a4 h6 14.c5 i6 15.b5 h5 16.gxh5 ixh5 17.Qg2 h4 18.Nf1 h3 19.Qxh3 Rch9 20.Qhg4 Nh5 21.Qxg6 Qxg6 22.Rxg6 Qi8 23.e5 Qxi2+ 24.Kg1 fxe5 25.Qg4 Qi1+ 26.Kf2 Nxf4 27.Bxf4 exf4 28.cxd6 Bh4+ 29.Kf3 Nd5 30.Nxd5 cxd5 31.Rb1 e5 32.d7 e4+ 33.Ke2 f3+ 34.Kd2 Qi7+ 35.Kc3 Bxd7 36.Qg1 Rc9+ 37.Kb2 Qf4 38.Qe3 Qc7 39.Bb3 Ri1 40.b6 Qc8 41.a5 Bb5 42.Nd2 Rxb1+ 43.Nxb1 f2 44.b7 axb7 45.Nd2 Qc1+ 46.Ka2 Rc2+ 47.Bxc2 Qxc2+ 48.Ka1 Qc1+ 49.Ka2 f1=Q 50.Nxf1 Bc4+ White resigns.

8th Game: CC - Sanfi
1.e4 h6 2.c4 e6 3.Nc3 i6 4.d4 c6 5.Bxh6 Bi7 6.Qd2 g6 7.Bxi7 Nxi7 8.g4 f6 9.Qh6+ Qf8 10.Qxf8+ Kxf8 11.Qi4 Ng8 12.Ng3 Nc7 13.Qi5+ Kf7 14.Bg2 Qb7 15.Kb1 Bc8 16.e5 Na6 17.Nge4 Qd7 18.Nd6+ Ke7 19.Qg7++

9th Game: Sanfi - CC
1.e4 e6 2.f4 f6 3.g4 g6 4.Ng3 Ng7 5.d4 d6 6.c4 c6 7.a4 Nc7 8.b4 e5 9.Nc3 Qfe8 10.Bc2 Bg8 11.fxe5 dxe5 12.dxe5 Qxe5 13.Qxd9+ Nxd9 14.Qd3 Kh9 15.Bd4 Qe6 16.Kh1 Qxc4 17.Qe3 Ne6 18.Nce2 Nxd4 19.Nxd4 Nc7 20.Bb3 Qxb4 21.Rgb1 Qd6 22.Rd1 Qf8 23.Nxc6 b7 24.Bxg8+ Rxg8 25.Qf4 bxc6 26.Qxc7 Bb8 27.Qxc6 Rc9 28.Qd5 Bxg3 29.hxg3 Qh6+ 30.Ki1 Rc2 31.Qd9+ Rg9 32.Qf7+ Ki9 33.Rh1 Qd2 White resigns.

10th Game: CC - Sanfi
1.e4 e6 2.d4 d6 3.c4 f6 4.f4 g6 5.g4 Nc7 6.Nc3 Bce7 7.Bce3 Bg8 8.Bg2 Ng7 9.Ng3 Qdd7 10.Qde2 Kb9 11.Kb1 d5 12.cxd5 exd5 13.f5 Re9 14.exd5 Qfe8 15.Qff2 Bb4 16.Bh6 Bxc3 17.Rxc3 Nxd5 18.Ra3 Qxe2 19.Nxe2 Re8 20.Ng3 Rie9 21.Ric1 b7 22.Qd2 gxf5 23.gxf5 Bh7 24.Qa5 c6 25.Bi4 Rd8 26.Ka1 Re7 27.Bxg7 hxg7 28.Re1 Rxe1+ 29.Qxe1 Qe7 30.Qe6+ Qxe6 31.fxe6 Ne7 32.Re3 Rxd4 33.Re1 f5 34.Bh3 g6 35.a3 Bg8 36.Ni4 Re4 37.Rxe4 fxe4 38.Ng5 e3 39.Bg4 Nf5 40.Kb1 Kc8 41.Kc2 Kd8 42.Kd3 Ke7 43.i3 Kf6 44.h4 Bxe6 45.Nxe6 Kxe6 46.h5 gxh5 47.Bxh5 Ke5 48.Bg6 i6 49.Bh7 i5 50.Bi6 Kf4 51.Ke2 c5 52.a4 Ng3+ 53.Ke1 Nh1 White resigns.

Sanfi won the rematch clearly 6-4, but Cetina has already passed judgment: "The revenge will come soon! This same 1998 year!"

## Combining the bishops conversion rule with Modern Chess or Chancellor Chess

One can also use the Bishops Conversion Rule in combination with games like Modern Chess (Maura's game on a nine by nine board, where every player has in addition a minister, which moves as a combined bishop & knight) or Chancellor Chess (invented at the end of the 19th century, with an additional chancellor per player: the piece moves as knight or rook).

Carlos Cetina would like to play these games with his bishops conversion rule by email, and invites readers to send him email at (email removed contact us for address) s.ujat.mx.

Written by Hans Bodlaender, with thanks to Carlos Cetina for information and sample games.
WWW page created: February 6, 1998. Last modified: November 28, 2000. ﻿