Me against a weak computer. Enjoy. I was white.

[tjfroh]

1.e2-e4 c7-c5 2. Ng1-f3 d7-d6 3. Bf1-c4 Nb8-d7 4. O-O e7-e5 5. Nb1-c3 Ng8-h6 6. d2-d3 Qd8-a5 7. Bc1xh6 g7xh6 8. Nc3-d5 b7-b5 9. Bc4xb5 Ra8-b8 10. a2-a4 Bf8-g7 11. Nf3-d2 Rh8-f8 12.Nd2-c4 Rb8xb5 13. a4xb5 Qa5xa1 14. Qd1xa1 Ke8-d8 15.Qa1xa7 Kd8-e8 16. Qa7-c7 Rf8-g8 17 Qc7xc8 checkmate.

[yurikvelo]

Can't beleive computer is able to play 11. .. Rf8?? instead on castling.
Out of 27 legal moves it is among Worst-5, even at D=5 plies

It is equally bad as give-away Queen for free:
11. .. Qxa4 12. Bxa4
11. .. Qc3 12. bxc3

Maybe your engine lack castling implementation?

Also, inbelievable engine didn't detect 4-move mate (9 plies) and 2 move mate (4 plies)

P.S. use [ pgn ] BB-code to paste notations

Code: Select all

+02,40	11. ... Qd8 12.Nc4 0-0 13.Nxd6 Nb6
+03,69	11. ... Kf8 12.Nc4 Qd8 13.Nxd6 Nf6
+05,49	11. ... 0-0 12.Ne7+ Kh8 13.Nxc8 Rfxc8
+06,55	11. ... Bb7 12.Bxd7+ Kf8 13.Ne3 Qd8
+06,98	11. ... Rb7 12.Nc4 Qd8 13.Nxd6+ Kf8
+07,65	11. ... Rxb5 12.Nc4 0-0 13.axb5 Qd8
+08,05	11. ... Bf8 12.f4 a6 13.Bxd7+ Bxd7
+11,87	11. ... Kd8 12.Nc4 Qc7 13.Nxc7 Kxc7
+11,89	11. ... Qb6 12.Nxb6 Rxb6 13.Nc4 0-0
+12,14	11. ... Qb4 12.c3 Qxb5 13.Nc7+ Kf8
+12,15	11. ... a6 12.Nc4 0-0 13.Nxa5 axb5
+12,88	11. ... Qxd2 12.Qxd2 a6 13.Bxd7+ Bxd7
+13,12	11. ... Qxb5 12.axb5 0-0 13.Rxa7 Nf6
+13,77	11. ... h5 12.Nc4 Qb6 13.Ncxb6 axb6
+14,11	11. ... Rb6 12.Nc4 Qb4 13.Nxb4 cxb4
+14,39	11. ... Ra8 12.Nc4 0-0 13.Nxa5 Nb6
+14,73	11. ... Qa6 12.Nc7+ Kd8 13.Nxa6 Bxa6
+14,87	11. ... Rg8 12.Nc4 Qb6 13.Ncxb6 Rxb6
+15,37	11. ... f5 12.Nc4 0-0 13.Nxa5 Kh8
+15,64	11. ... f6 12.Nc4 0-0 13.Ne7+ Kh8
+15,81	11. ... Qc7 12.Nxc7+ Kd8 13.Nd5 Nb6
+16,26	11. ... c4 12.Nxc4 0-0 13.Nxa5 a6
+16,94	11. ... Ba6 12.Nc4 0-0 13.Nxa5 Bxb5
+17,02	11. ... Rf8 12.Nc4 Qb4 13.Nxd6+ Kd8		<--- ?????
+17,10	11. ... Bf6 12.Nc4 0-0 13.Nxa5 Bg5
+17,92	11. ... Qxa4 12.Bxa4 0-0 13.Ne7+ Kh8
+18,16	11. ... Qc3 12.bxc3 0-0 13.Ne7+ Kh8

+M17	14. ... Rg8 15.Nxd6+ Kf8 16.Qxa7 Bf6
+M17	14. ... Rh8 15.Nxd6+ Kf8 16.Qxa7 Bf6
+M10	14. ... Nb6 15.Qxa7 Nxd5 16.Nxd6+ Kd8
+M05	14. ... Bb7 15.Nxd6+ Kd8 16.Nxb7+ Ke8
+M04	14. ... f5 15.Nxd6+ Kd8 16.Qxa7 Bb7
+M04	14. ... f6 15.Nxd6+ Kd8 16.Qxa7 Bb7
+M04	14. ... Nb8 15.Nxd6+ Kd7 16.Qxa7+ Bb7
+M04	14. ... Bh8 15.Nxd6+ Kd8 16.Qxa7 Bb7
+M04	14. ... h5 15.Nxd6+ Kd8 16.Qxa7 Bb7
+M04	14. ... Kd8 15.Qxa7 Bb7 16.Qxb7 Rh8		<--- ?????
+M04	14. ... Nf6 15.Nxd6+ Kd8 16.Qa5+ Kd7
+M04	14. ... Ba6 15.Qxa6 Kd8 16.Qxd6 f6
+M04	14. ... a6 15.Qa5 Nb6 16.Qxb6 f6
+M04	14. ... a5 15.Qxa5 Nb6 16.Qxb6 f6
+M04	14. ... Bf6 15.Nxd6+ Kd8 16.Qxa7 Bb7

+M03	15. ... Bb7 16.Qxb7 Rh8 17.Qc7+ Ke8 18.Qc8#
+M02	15. ... f6 16.Qc7+ Ke8 17.Nxd6#
+M02	15. ... Rh8 16.Qc7+ Ke8 17.Qxc8#
+M02	15. ... h5 16.Qc7+ Ke8 17.Qxc8#
+M02	15. ... Rg8 16.Qc7+ Ke8 17.Qxc8#
+M02	15. ... Ke8 16.Nxd6+ Kd8 17.Qc7#		<--- ?????

[Henk]

I don't understand 3. Bc4 for you need three moves to put it on a2 where it is safe. But may be diagonal a2-g8 is very important and where else can you put the bishop. On e2 it blocks other pieces, on g2 but then it is on a worse diagonal ? I think I would put bishop on g2.

[Henk]

Maybe better wait a moment with moving a bishop. Knights first.

[yurikvelo]

Maybe better wait a moment with moving a bishop. Knights first.

http://www.365chess.com/opening.php?mas ... ns=3.3.4.4

3. Bc4 is playable and even have highest WIN ratio for white, compare to most common d4

[Henk]

Maybe better wait a moment with moving a bishop. Knights first.

http://www.365chess.com/opening.php?mas ... ns=3.3.4.4

3. Bc4 is playable and even have highest WIN ratio for white, compare to most common d4

Maybe purpose of 1.e4 is to prohibit d5. Otherwise play best move 1.d4. I prefer 1. Nf3 although it may block a bishop on g2.

[yurikvelo]

I do not believe there exist engine which could make this move. Even at ZX Spectrum computer.

Or it use some time random move generator (to emulate low-ELO player)



MS-DOS Rebel even at t D=3 (!!) see Rf8 as mega blunder

[Henk]

Maybe better wait a moment with moving a bishop. Knights first.

http://www.365chess.com/opening.php?mas ... ns=3.3.4.4

3. Bc4 is playable and even have highest WIN ratio for white, compare to most common d4

#games is important for trustworthiness of percentages given.

[yurikvelo]

Maybe better wait a moment with moving a bishop. Knights first.

http://www.365chess.com/opening.php?mas ... ns=3.3.4.4

3. Bc4 is playable and even have highest WIN ratio for white, compare to most common d4

#games is important for trustworthiness of percentages given.

Yes, but beter use #games for a given recent period of time.
Some bad but popular moves are there for ages.