We are reaching the Max Odds that a top engine can give the top 3 GM's

[Chessqueen]

Very soon either Stockfish or Komodo will be able to give a Knight odds in TC of 2'+1" to the top 3 GM.s, but we are really witnessing the maximum odds that any engine would be able to give to the 3 top GMs, since none of us will be able to see an engine giving a Rook Odds with a TC of 2'+1"

The real challenge here is for an engine to give knight odds in Rapid (15' + 10") to GMs, at least with Armageddon rule that White (the odds-giver) wins draws. I think this is already possible with low-rated GMs (low 2400s). So the goal can be to gradually increase the rating of the GM to whom an engine can win say a five game Armageddon knight odds match. People expect blunders in blitz, but 15' + 10" is now the most popular time control for Elite events, especially online, so this is supposed to be a serious time limit where strong players should not make too many simple blunders. Whether an engine will ever be able to beat the world's best Rapid player this way is unknown, we are far from that point now.

Deep Blue with its capability of evaluating 200 million positions per second, was the first and fastest computer to face a Chess Champion (1997).
So we have commercial computer that are at least 24 times faster than Deep Blue, and it is still hard for the latest Engine to give a Knight Odds at TC 15'+10" to the top three players.
Ryzen 5000 CPU Bench 4.801.341.606 128 cpu's x32 threads Cluster System 4096threads Stockfish pop vondele

Knight odds is roughly a thousand elo handicap when the odds-receiver is around GM level, as best I can measure it. I believe that today's top three engines, running on a system like that (with good GPUs for engines that need them) could beat Deep Blue in a standard chess match giving something like 1000 to 1 time odds (like 8 hours to half a minute for the game) or even more, but this is still not a thousand elo with equal time. I think that Komodo Dragon or recent Lc0 could indeed give Deep Blue knight odds at some reasonably quick time control (maybe Rapid), but is far from being able to give Kasparov knight odds in Rapid. My tests between Dragon and "Benjamin" have convinced me that more speed or cores isn't the solution; I get similar results in these knight odds matches whether Dragon uses 1,4, or 10 threads. I think that's because even on one thread, Dragon searches about ten plies deeper than Benjamin, and looking deeper just makes Dragon fear lines that Benjamin would never even find. The key is to find some ways, whether by search or eval, to anticipate what a weaker opponent might overlook.

Took up the challenge, here’s a knight odds iPhone quickie while breakfast coffee. Boring but relatively solid (me) although my intended knight manoeuvre to c4 ended with SF pressure and some difficulties with the Bishop. Trading down solved the problem.
No real attempt at time control, SF was moving within a few seconds, me likewise.

[pgn] [Event "?"]
[Site "?"]
[Date "14 May 2021"]
[Round "?"]
[White "Stockfish"]
[Black "Me"]
[Result "0-1"]
[FEN "rnbqkbnr/pppppppp/8/8/3P4/8/PPP1PPPP/R1BQKBNR b KQkq -"]

1... Nf6 2. Nf3 g6 3. Bg5 Bg7 4. e3 d6 5. Bd3 O-O 6. c3 c5 7. b4 cxb4 8. cxb4
a6 9. O-O Nc6 10. a3 b5 11. Rc1 Bb7 12. e4 e5 13. d5 Nd4 14. Nxd4 exd4 15. f3
Qd7 16. Rf2 Rfc8 17. Ra2 Rxc1 18. Qxc1 Rc8 19. Qf1 Ne8 20. Ra1 Nc7 21. g4 Na8
22. a4 bxa4 23. b5 axb5 24. Bxb5 Qc7 25. Rxa4 Nb6 26. Ra7 Nd7 27. Bxd7 Qxd7 28.
Qb1 Rc7 29. Bd2 Qc8 30. h3 h6 31. Qd3 Qb8 32. Ra2 g5 33. Kf2 Bc8 34. Be1 Bd7
35. Qd1 Ra7 36. Rxa7 Qxa7 37. Kg2 Bb5 38. Qd2 Qa4 39. Qf2 Qc4 40. Ba5 Be5 41.
Bd2 Qc2 42. Bb4 Qxf2+ 43. Kxf2 Bf4 44. Ke1 Kg7 45. Ba3 Kf6 46. Bb4 Ke5 47. Kf2
Be3+ 48. Kg3 d3 49. Bc3+ Bd4 50. Bd2 Bb2 51. Kf2 Kd4 52. Be3+ Kc3 53. f4 gxf4
54. Bxf4 d2 55. Bxd2+ Kxd2 56. h4 f6 57. Kg3 Ke3 58. g5 fxg5 59. hxg5 hxg5 60.
Kg4 Bf6 61. e5 dxe5 62. Kf5 g4 63. Kxf6 g3 64. d6 g2 65. d7 Bxd7 66. Ke7 Bh3
67. Kd6 g1=Q 68. Kd5 Qa1 69. Kc5 Qd4+ 70. Kc6 Bg2+ 71. Kc7 Qd5 72. Kb6 Qc6+ 73.
Ka5 Kd4 74. Kb4 Qc5+ 75. Kb3 Qc3+ 76. Ka2 Bd5+ 77. Kb1 Qd2 78. Ka1 Qa2#
0-1
[/pgn]

According to Mr. Larry Kaufman "Knight odds is roughly a thousand elo handicap when the odds-receiver is around GM level, as best I can measure it." Therefore, if Stockfish is rated around 3300 on the Iphone on standard chess with the Knight Odds it would be around 2300. That means that you are a strong 2300 at least, if NOT we would have to figure how much to subtract to the strongest engine when giving Knight Odds.

First, does anyone know whether this Stockfish on the cellphone is Stockfish with NNUE or a version without NNUE (I'm guessing without)? NNUE does help somewhat for knight odds, though even with it Stockfish is not a strong opponent because Contempt wasn't working properly with NNUE last I heard. Without using Contempt Stockfish or Dragon will just allow too many exchanges at knight odds. My estimate of 1000 elo assumed that both players understood the importance of simplifying when ahead and avoiding that when behind.

Unfortunately the App seems to be not updated, so is certainly not NNUE version.
Actually, I thought SF, even if four years old, played quite well. Btw, my rating for these sorts of games is highly variable, depending. About 50 years when I took chess way too seriously, I got my BCF rating up to 221 and then stopped playing, neither in weekend tournaments nor in the league. That’s supposed to be about FIDE 2400. 50 years on, opening knowledge more or less gone, desire and/or ability to think in style required (Kotov type thinking) has more or less disappeared, but I think the positional knowledge stays. So, that means, gimme relatively quiet manoeuvre positions and I’ll play those well. Tactics and/or much look-ahead, eek, forget it. Seeing weird ideas that might work, good at those. If I could keep SF etc in the kind of positions I like, then, dunno, nowadays, in actual OTB, not that I ever do, maybe 2100 or more, if it gets a bit tactical or I get squeezed, then I’ll probably lose. 1900 sometimes, 2400 on a good day, in the right sort of game positions and favourable moon phase.
Anyway, SF in that one game, actually got me in a bit of trouble. Obviously my plan was Nf6-c4 via c7, a8 and b6, which, if allowed was end of Stockfish. The opening of the q-side, followed by all my pieces treading on each other’s toes was good SF play. In the end, disentanglement was possible and I got away with it. Quite possibly, playing casually against SF-NNUE, I won’t. If knight odds are 1000 Elo, with SF at 3400(?), that’s going to require a 2400 player just to break even, so I doubt that would be me. Will give it another go if find an iPhone NNUE version.

Since you mentioned Iphone did you used Smallfish, after version 16.4.1 of Smallfish = Stockfish 13. This release has the improved neural network technologies which enabled it to win the recent computer championship. ==> https://apps.apple.com/us/app/smallfish ... orm=iphone

[lkaufman]

Unfortunately the App seems to be not updated, so is certainly not NNUE version.
Actually, I thought SF, even if four years old, played quite well. Btw, my rating for these sorts of games is highly variable, depending. About 50 years when I took chess way too seriously, I got my BCF rating up to 221 and then stopped playing, neither in weekend tournaments nor in the league. That’s supposed to be about FIDE 2400. 50 years on, opening knowledge more or less gone, desire and/or ability to think in style required (Kotov type thinking) has more or less disappeared, but I think the positional knowledge stays. So, that means, gimme relatively quiet manoeuvre positions and I’ll play those well. Tactics and/or much look-ahead, eek, forget it. Seeing weird ideas that might work, good at those. If I could keep SF etc in the kind of positions I like, then, dunno, nowadays, in actual OTB, not that I ever do, maybe 2100 or more, if it gets a bit tactical or I get squeezed, then I’ll probably lose. 1900 sometimes, 2400 on a good day, in the right sort of game positions and favourable moon phase.
Anyway, SF in that one game, actually got me in a bit of trouble. Obviously my plan was Nf6-c4 via c7, a8 and b6, which, if allowed was end of Stockfish. The opening of the q-side, followed by all my pieces treading on each other’s toes was good SF play. In the end, disentanglement was possible and I got away with it. Quite possibly, playing casually against SF-NNUE, I won’t. If knight odds are 1000 Elo, with SF at 3400(?), that’s going to require a 2400 player just to break even, so I doubt that would be me. Will give it another go if find an iPhone NNUE version.

I think that Contempt worked well enough in Stockfish before NNUE, so assuming that option is available on the iPhone version you could try playing it again at knight odds but with Contempt set to the maximum of 100. That should at least allow Stockfish to play the handicap at something close to its rating on the cellphone. I don't know what SF version corresponds to the cellphone version, but Stockfish 10 on one thread on CCRL Rapid is 3385, so if that is the proper version maybe 3300 or a bit less on the iPhone?

[Guenther]

Unfortunately the App seems to be not updated, so is certainly not NNUE version.
...

I think that Contempt worked well enough in Stockfish before NNUE, so assuming that option is available on the iPhone version you could try playing it again at knight odds but with Contempt set to the maximum of 100. That should at least allow Stockfish to play the handicap at something close to its rating on the cellphone. I don't know what SF version corresponds to the cellphone version, but Stockfish 10 on one thread on CCRL Rapid is 3385, so if that is the proper version maybe 3300 or a bit less on the iPhone?

If it's true that it is not updated since 2014 it is SF5.

[lkaufman]

Unfortunately the App seems to be not updated, so is certainly not NNUE version.
...

I think that Contempt worked well enough in Stockfish before NNUE, so assuming that option is available on the iPhone version you could try playing it again at knight odds but with Contempt set to the maximum of 100. That should at least allow Stockfish to play the handicap at something close to its rating on the cellphone. I don't know what SF version corresponds to the cellphone version, but Stockfish 10 on one thread on CCRL Rapid is 3385, so if that is the proper version maybe 3300 or a bit less on the iPhone?

If it's true that it is not updated since 2014 it is SF5.

Stockfish 5 on one thread of an i7 is 3190 on CCRL Rapid, so perhaps about 3100 on iPhone if that information is correct. So based on N odds = 1000 elo you would need 2100 to break even with it with max Contempt setting, maybe 2000 without using Contempt.

[Nordlandia]

Some insist that contempt adjustments over the default +24 in Stockfish make almost no sense.

I strongly disagree on that one.

[chrisw]

Unfortunately the App seems to be not updated, so is certainly not NNUE version.
...

I think that Contempt worked well enough in Stockfish before NNUE, so assuming that option is available on the iPhone version you could try playing it again at knight odds but with Contempt set to the maximum of 100. That should at least allow Stockfish to play the handicap at something close to its rating on the cellphone. I don't know what SF version corresponds to the cellphone version, but Stockfish 10 on one thread on CCRL Rapid is 3385, so if that is the proper version maybe 3300 or a bit less on the iPhone?

If it's true that it is not updated since 2014 it is SF5.

Stockfish 5 on one thread of an i7 is 3190 on CCRL Rapid, so perhaps about 3100 on iPhone if that information is correct. So based on N odds = 1000 elo you would need 2100 to break even with it with max Contempt setting, maybe 2000 without using Contempt.

This knights odds game was extremely scary. Figured I’ld try a sort of Alekhine defence, either provoking an over-extended four pawns attack, or pressurising the centre with the extra piece. Didn’t quite work out as intended, thought at several stages I was going to get swamped and/or tricked. One thing for sure, with equal pieces, I’ld get utterly crushed.

[pgn] [Event "?"]
[Site "?"]
[Date "14 May 2021"]
[Round "?"]
[White "Stockfish"]
[Black "Me"]
[Result "0-1"]
[FEN "rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/R1BQKBNR b KQkq -"]

1... Nf6 2. e5 Nd5 3. c4 Nb6 4. Nf3 d6 5. d4 Bg4 6. exd6 exd6 7. h3 Bh5 8. Bd3
Be7 9. b3 Nc6 10. Bb2 Bf6 11. g4 Bg6 12. Qe2+ Kf8 13. O-O-O Nb4 14. Bxg6 hxg6
15. a3 Nc6 16. h4 d5 17. g5 Be7 18. c5 Nc8 19. Nd2 Qd7 20. Rdf1 Bd8 21. f4 N8e7
22. Re1 Nf5 23. Qg4 Rh5 24. Kb1 Nce7 25. Nf3 Qb5 26. Ka2 c6 27. Ne5 Bc7 28. Rh3
b6 29. Nd3 bxc5 30. Nxc5 Bd6 31. Nd7+ Kg8 32. Rc1 Rd8 33. Ne5 Rb8 34. Qd1 Rb7
35. Qc2 a5 36. Qc3 a4 37. b4 Qe2 38. Re1 Qg2 39. Reh1 Qe4 40. Qd2 Bxe5 41. fxe5
Rxh4 42. Qh2 Rxh3 43. Qxh3 Kf8 44. Qf1 Qc2 45. Rh8+ Ng8 46. Qa6 Qc4+ 47. Qxc4
dxc4 48. Bc3 Rb5 49. Kb2 f6 50. gxf6 gxf6 51. Rh7 Rd5 52. Ra7 g5 53. Ra8+ Kg7
54. Rxa4 g4 55. Be1 fxe5 56. Ra7+ Kg6 57. Ra5 exd4 58. Rxd5 cxd5 59. a4 c3+ 60.
Kb3 Nf6 61. a5 Nd7 62. a6 g3 63. a7 Nb6 64. Ka2 d3 65. Bxc3 g2 66. a8=R Nxa8
67. b5 g1=Q 68. b6 Nxb6 69. Ka3 Qb1 70. Bb2 Nc4+ 71. Ka4 d2 72. Kb5 d1=Q 73.
Kc6 Qxb2 74. Kd7 d4 75. Kc7 d3 76. Kc6 d2 77. Kc7 Qh1 78. Kd7 d1=Q+ 79. Ke8 Qh7
80. Kf8 Ne5 81. Ke8 Nd6+ 82. Kf8 Nd7#
0-1

[/pgn]

[towforce]

This knights odds game was extremely scary. Figured I’ld try a sort of Alekhine defence, either provoking an over-extended four pawns attack, or pressurising the centre with the extra piece. Didn’t quite work out as intended, thought at several stages I was going to get swamped and/or tricked. One thing for sure, with equal pieces, I’ld get utterly crushed.

[pgn] [Event "?"]
[Site "?"]
[Date "14 May 2021"]
[Round "?"]
[White "Stockfish"]
[Black "Me"]
[Result "0-1"]
[FEN "rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/R1BQKBNR b KQkq -"]

1... Nf6 2. e5 Nd5 3. c4 Nb6 4. Nf3 d6 5. d4 Bg4 6. exd6 exd6 7. h3 Bh5 8. Bd3
Be7 9. b3 Nc6 10. Bb2 Bf6 11. g4 Bg6 12. Qe2+ Kf8 13. O-O-O Nb4 14. Bxg6 hxg6
15. a3 Nc6 16. h4 d5 17. g5 Be7 18. c5 Nc8 19. Nd2 Qd7 20. Rdf1 Bd8 21. f4 N8e7
22. Re1 Nf5 23. Qg4 Rh5 24. Kb1 Nce7 25. Nf3 Qb5 26. Ka2 c6 27. Ne5 Bc7 28. Rh3
b6 29. Nd3 bxc5 30. Nxc5 Bd6 31. Nd7+ Kg8 32. Rc1 Rd8 33. Ne5 Rb8 34. Qd1 Rb7
35. Qc2 a5 36. Qc3 a4 37. b4 Qe2 38. Re1 Qg2 39. Reh1 Qe4 40. Qd2 Bxe5 41. fxe5
Rxh4 42. Qh2 Rxh3 43. Qxh3 Kf8 44. Qf1 Qc2 45. Rh8+ Ng8 46. Qa6 Qc4+ 47. Qxc4
dxc4 48. Bc3 Rb5 49. Kb2 f6 50. gxf6 gxf6 51. Rh7 Rd5 52. Ra7 g5 53. Ra8+ Kg7
54. Rxa4 g4 55. Be1 fxe5 56. Ra7+ Kg6 57. Ra5 exd4 58. Rxd5 cxd5 59. a4 c3+ 60.
Kb3 Nf6 61. a5 Nd7 62. a6 g3 63. a7 Nb6 64. Ka2 d3 65. Bxc3 g2 66. a8=R Nxa8
67. b5 g1=Q 68. b6 Nxb6 69. Ka3 Qb1 70. Bb2 Nc4+ 71. Ka4 d2 72. Kb5 d1=Q 73.
Kc6 Qxb2 74. Kd7 d4 75. Kc7 d3 76. Kc6 d2 77. Kc7 Qh1 78. Kd7 d1=Q+ 79. Ke8 Qh7
80. Kf8 Ne5 81. Ke8 Nd6+ 82. Kf8 Nd7#
0-1

[/pgn]

It looked to me as though your queen was trapped for sure: had to open the analysis board a couple of times to work out that it could escape.

A narrow squeak.

[chrisw]

Well, this was fun. Tried an Alekhine again, only this time the odds was the k-side knight. Didn’t think I could torture Stockfish to death (well, I can’t, other than with a knight odds), but, well, see for yourself ...


[pgn] [Event "?"]
[Site "?"]
[Date "15 May 2021"]
[Round "?"]
[White "Stockfish"]
[Black "Me"]
[Result "0-1"]
[FEN "rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKB1R b KQkq -"]

1... Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 exd6 6. Nc3 Bf5 7. Be3 Nc6 8. Be2
Be7 9. b3 O-O 10. O-O Re8 11. Qd2 Bf6 12. Rfe1 h6 13. d5 Nb4 14. Rac1 Na6 15.
Bd3 Bxd3 16. Qxd3 Nd7 17. a3 Nac5 18. Qc2 Bg5 19. Bxg5 Qxg5 20. Rf1 Nf6 21. Rb1
a6 22. Rbe1 Qh4 23. Rd1 Re5 24. Rde1 Rae8 25. Rxe5 Rxe5 26. g3 Qg4 27. b4 Ncd7
28. f4 Re8 29. Qd1 Qf5 30. Rf2 Re3 31. Qd2 Qd3 32. Qxd3 Rxd3 33. Rc2 Ng4 34.
Rc1 Ne3 35. b5 Nc5 36. bxa6 bxa6 37. Nb1 Ne4 38. Re1 f5 39. Rc1 Kf7 40. Re1 Ke7
41. Kh1 a5 42. Kg1 Kd7 43. a4 Kc8 44. Rc1 Kb7 45. Re1 Kb6 46. Kh1 Kc5 47. Kg1
Kb4 48. h3 Kb3 49. c5 dxc5 50. g4 g6 51. g5 h5 52. Kh2 h4 53. d6 cxd6 54. Kg1
Kc2 55. Kh1 d5 56. Kg1 d4 57. Kh2 c4 58. Kg1 Rb3 59. Na3+ Kd2 60. Ra1 c3 61.
Ra2+ Kd3 62. Kh1 Ng3+ 63. Kh2 Ke4 64. Nc2 Nxc2 65. Rxc2 d3 66. Rc1 Rb2+ 67. Kg1
Kf3 68. Rf1+ Nxf1 69. Kh1 Ng3+ 70. Kg1 Rg2#
0-1



Sent from my iPhone
[/pgn]

[Chessqueen]

Well, this was fun. Tried an Alekhine again, only this time the odds was the k-side knight. Didn’t think I could torture Stockfish to death (well, I can’t, other than with a knight odds), but, well, see for yourself ...


[pgn] [Event "?"]
[Site "?"]
[Date "15 May 2021"]
[Round "?"]
[White "Stockfish"]
[Black "Me"]
[Result "0-1"]
[FEN "rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKB1R b KQkq -"]

1... Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 exd6 6. Nc3 Bf5 7. Be3 Nc6 8. Be2
Be7 9. b3 O-O 10. O-O Re8 11. Qd2 Bf6 12. Rfe1 h6 13. d5 Nb4 14. Rac1 Na6 15.
Bd3 Bxd3 16. Qxd3 Nd7 17. a3 Nac5 18. Qc2 Bg5 19. Bxg5 Qxg5 20. Rf1 Nf6 21. Rb1
a6 22. Rbe1 Qh4 23. Rd1 Re5 24. Rde1 Rae8 25. Rxe5 Rxe5 26. g3 Qg4 27. b4 Ncd7
28. f4 Re8 29. Qd1 Qf5 30. Rf2 Re3 31. Qd2 Qd3 32. Qxd3 Rxd3 33. Rc2 Ng4 34.
Rc1 Ne3 35. b5 Nc5 36. bxa6 bxa6 37. Nb1 Ne4 38. Re1 f5 39. Rc1 Kf7 40. Re1 Ke7
41. Kh1 a5 42. Kg1 Kd7 43. a4 Kc8 44. Rc1 Kb7 45. Re1 Kb6 46. Kh1 Kc5 47. Kg1
Kb4 48. h3 Kb3 49. c5 dxc5 50. g4 g6 51. g5 h5 52. Kh2 h4 53. d6 cxd6 54. Kg1
Kc2 55. Kh1 d5 56. Kg1 d4 57. Kh2 c4 58. Kg1 Rb3 59. Na3+ Kd2 60. Ra1 c3 61.
Ra2+ Kd3 62. Kh1 Ng3+ 63. Kh2 Ke4 64. Nc2 Nxc2 65. Rxc2 d3 66. Rc1 Rb2+ 67. Kg1
Kf3 68. Rf1+ Nxf1 69. Kh1 Ng3+ 70. Kg1 Rg2#
0-1

Sent from my iPhone
[/pgn]

Chrisw let us now how you do against RubiChess-2.1

[Chessqueen]

Well, this was fun. Tried an Alekhine again, only this time the odds was the k-side knight. Didn’t think I could torture Stockfish to death (well, I can’t, other than with a knight odds), but, well, see for yourself ...


[pgn] [Event "?"]
[Site "?"]
[Date "15 May 2021"]
[Round "?"]
[White "Stockfish"]
[Black "Me"]
[Result "0-1"]
[FEN "rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKB1R b KQkq -"]

1... Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 exd6 6. Nc3 Bf5 7. Be3 Nc6 8. Be2
Be7 9. b3 O-O 10. O-O Re8 11. Qd2 Bf6 12. Rfe1 h6 13. d5 Nb4 14. Rac1 Na6 15.
Bd3 Bxd3 16. Qxd3 Nd7 17. a3 Nac5 18. Qc2 Bg5 19. Bxg5 Qxg5 20. Rf1 Nf6 21. Rb1
a6 22. Rbe1 Qh4 23. Rd1 Re5 24. Rde1 Rae8 25. Rxe5 Rxe5 26. g3 Qg4 27. b4 Ncd7
28. f4 Re8 29. Qd1 Qf5 30. Rf2 Re3 31. Qd2 Qd3 32. Qxd3 Rxd3 33. Rc2 Ng4 34.
Rc1 Ne3 35. b5 Nc5 36. bxa6 bxa6 37. Nb1 Ne4 38. Re1 f5 39. Rc1 Kf7 40. Re1 Ke7
41. Kh1 a5 42. Kg1 Kd7 43. a4 Kc8 44. Rc1 Kb7 45. Re1 Kb6 46. Kh1 Kc5 47. Kg1
Kb4 48. h3 Kb3 49. c5 dxc5 50. g4 g6 51. g5 h5 52. Kh2 h4 53. d6 cxd6 54. Kg1
Kc2 55. Kh1 d5 56. Kg1 d4 57. Kh2 c4 58. Kg1 Rb3 59. Na3+ Kd2 60. Ra1 c3 61.
Ra2+ Kd3 62. Kh1 Ng3+ 63. Kh2 Ke4 64. Nc2 Nxc2 65. Rxc2 d3 66. Rc1 Rb2+ 67. Kg1
Kf3 68. Rf1+ Nxf1 69. Kh1 Ng3+ 70. Kg1 Rg2#
0-1

Sent from my iPhone
[/pgn]

Chrisw let us now how you do against RubiChess-2.1, and btw what is the TC ?