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Subject: Re: test positions, white begin and draw(can you find all the solutions?)

Author: Manfred Rosenboom

Date: 09:39:11 09/03/02

Go up one level in this thread


On September 03, 2002 at 09:29:24, Uri Blass wrote:

[D]8/8/3R2p1/1qb4p/8/p5P1/1pk2P1P/4Q1K1 w - - 0 76
>
>candidate moves:Rd8,Qe4,Qd1+
>
>Movei played Rd2+ that is a losing move.
>
>possible line 76.Rd8 g5 77.Qd1+ Kc3 78.Qf3+ Kb4 79.Qe4+ Kb3 80.Qe6+ Ka4 81.Qe4+
>Qb4 82.Qc2+ Ka5 83.Ra8+ Kb5 84.Qd3+ Qc4 85.Rb8+ Bb6 86.Rxb6+ Kxb6 87.Qxc4 b1Q+
>88.Kg2 and it seems that white can draw by perpetual check.

Yace  UCI 131 MB:
D1  00:00  -7.43   Rd6xg6 b2b1Q
D1+  00:00  -0.77   Qe1d2 Kc2b3
D1  00:00  -0.32   Qe1d2 Kc2b3
D1  00:00  -0.14   Qe1d1 Kc2c3
D2  00:00  -0.15   Qe1d1 Kc2c3 Qd1e1 Kc3c4 Qe1e4 Kc4c3
D2  00:00  -0.05   Rd6d2 Kc2c3 Rd2d8 Kc3b3 Qe1b1
D3  00:00  -0.05   Rd6d2 Kc2b3 Qe1b1 Kb3a4
D3+  00:00  -0.03   Qe1d1 Kc2c3 Qd1e1 Kc3b3 Rd6xg6 a3a2 Qe1e6 Qb5c4
D3  00:00  0.00   Qe1d1 Kc2c3 Qd1e1 Kc3c4 Qe1e4 Kc4c3 Qe4e1 Kc3c4
D4  00:00  0.00   Qe1d1 Kc2c3 Qd1f3 Kc3b4 Qf3e4 Kb4a5 Qe4a8 Ka5b4 Qa8e4
D5  00:00  -0.01   Qe1d1 Kc2c3 Qd1f3 Kc3b4 Qf3e4 Kb4b3 Rd6xg6 a3a2 Qe4f3 Kb3c2
D6-  00:00  -0.41   Qe1d1 Kc2c3 Qd1f3 Kc3b4 Qf3e4 Kb4b3 Rd6xg6 Bc5xf2 Kg1xf2
Qb5c5 Kf2g2 Qc5c2 Kg2g1 b2b1Q Qe4e1
D6  00:00  -0.41   Qe1d1 Kc2c3 Qd1f3 Kc3b4 Qf3e4 Kb4b3 Rd6d2 Bc5xf2 Rd2xf2 a3a2
Qe4e3 Kb3a4 Qe3e4 Qb5c4
D6+  00:00  -0.40   Rd6d2 Kc2c3
D6  00:01  -0.09   Rd6d2 Kc2c3 Kg1g2 Kc3b3 Qe1b1 Qb5c6 f2f3 Kb3b4
D7  00:03  -0.25   Rd6d2 Kc2b3 Qe1e4 Qb5b4 Qe4d5 Qb4c4 Rd2d3 Kb3b4 Qd5b7 Kb4a5
Qb7c7 Ka5b5 Qc7b7 Bc5b6 Qb7d7 Qc4c6
D7+  00:03  -0.24   Qe1d1 Kc2c3 Qd1f3 Kc3b4 Qf3e4 Kb4b3 Qe4e6 Kb3a4 Qe6e4 Ka4a5
Qe4a8 Bc5a7 Qa8xa7 Ka5b4 Rd6d1 b2b1N
D7  00:03  -0.24   Qe1d1 Kc2c3 Qd1f3 Kc3b4 Qf3e4 Kb4b3 Qe4e6 Kb3a4 Qe6e4 Qb5b4
Qe4e8 Ka4b3 Qe8e6 Qb4c4 Qe6xc4 Kb3xc4 Rd6d3
D7+  00:04  -0.23   Rd6d8 Kc2b3 Qe1e6 Qb5c4 Rd8d3 Kb3b4 Qe6e1 Kb4b5 Qe1e8 Kb5a5
Qe8d8 Bc5b6 Rd3xa3 Ka5b5
D7  00:05  -0.15   Rd6d8 Kc2b3 Qe1e6 Qb5c4 Rd8d3 Kb3b4 Qe6e1 Kb4b5 Qe1e8 Kb5b6
Qe8d8 Kb6b7 Qd8d7 Kb7b8 Rd3d1
D8  00:13  -0.04   Rd6d8 g6g5 Rd8d2 Kc2c3 Kg1g2 Qb5c4 Rd2d5 Kc3b3 Rd5xg5 a3a2
Qe1d1 Qc4c2
D9  00:26  0.00   Rd6d8 g6g5 Qe1d1 Kc2c3 Qd1f3 Kc3b4 Qf3e4 Kb4b3 Qe4e6 Kb3b4
Qe6e1 Kb4c4 Qe1e4 Kc4c3 Qe4e1 Kc3b3 Qe1e6 Kb3b4 Qe6e1 Kb4c4 Qe1e4 Kc4c3 Qe4e1
Kc3b3 Qe1e6
D10  00:51  0.00   Rd6d8 g6g5 Qe1d1 Kc2c3 Qd1f3 Kc3b4 Qf3e4 Kb4b3 Qe4e6 Kb3b4
Qe6e1 Kb4c4 Qe1e4 Kc4c3 Qe4e1 Kc3b3 Kg1g2
D11  02:30  0.00   Rd6d8 g6g5 Qe1d1 Kc2c3 Qd1f3 Kc3b4 Qf3e4 Kb4b3 Qe4e6 Kb3b4
Qe6e1 Kb4c4 Qe1e4 Kc4c3 Qe4e1 Kc3b3 Qe1e6 Kb3b4 Qe6e1 Kb4c4 Qe1e4 Kc4c3 Qe4e1
Kc3b3 Qe1e6




[D]8/P3R3/8/3p4/3kpK2/8/8/r7 w - - 0 62 bm Rb7,?
>
>Movei played Kg4 that lost.
>
>candidate moves:Rb7,Rc7,Rd7,Rf7,Rg7,Rh7

Yace  UCI 139 MB:
D1  00:00  -2.53   a7a8Q Ra1xa8
D1  00:00  -2.48   Re7e5 Ra1xa7
D1  00:00  -0.80   Kf4f5
D1  00:00  -0.71   Re7d7
D2  00:00  -0.80   Re7d7 Ra1f1 Kf4g4
D3  00:00  -0.80   Re7d7 Ra1f1 Kf4g4 Rf1f8
D4  00:00  -0.80   Re7d7 Ra1f1 Kf4g4 Rf1f8 Kg4h4
D5  00:00  -0.85   Re7d7 Ra1f1 Kf4g5 Rf1f8 Kg5g4 Rf8a8
D5+  00:00  -0.84   Kf4g4 e4e3 Kg4f3 Ra1f1 Kf3g4 Rf1f3
D5  00:00  -0.81   Kf4g4 e4e3 Kg4f3 Ra1f1 Kf3g4 Rf1f8
D6  00:00  -1.04   Kf4g4 Kd4d3 Kg4f4 d5d4 Re7xe4 Ra1xa7
D6+  00:00  -1.02   Re7d7 Kd4d3
D6  00:00  -0.83   Re7d7 e4e3 Kf4f3 Ra1f1 Kf3g4 Rf1f8 Kg4g3
D7  00:00  -0.86   Re7d7 e4e3 Kf4f3 Ra1f1 Kf3g4 Rf1f8 Rd7e7 Rf8a8
D8  00:00  -0.93   Re7d7 e4e3 Kf4f3 Ra1a2 Kf3g3 e3e2 Kg3f2 Kd4e4 Rd7d6
D9  00:00  -0.94   Re7d7 e4e3 Kf4f3 Ra1a2 Kf3g3 e3e2 Kg3f2 Kd4e4 Rd7e7 Ke4d3
Re7e3 Kd3c4 Re3e5
D10  00:01  -0.99   Re7d7 e4e3 Kf4f3 Ra1a2 Rd7e7 e3e2 Kf3f2 Kd4c3 Re7xe2 Ra2xa7
Kf2e3
D11  00:02  -1.01   Re7d7 e4e3 Kf4f3 Ra1a2 Rd7e7 e3e2 Kf3f2 Kd4c3 Re7e3 Kc3c4
Re3e7 d5d4 Re7d7
D12  00:04  -1.04   Re7d7 e4e3 Kf4f3 Ra1a2 Rd7e7 e3e2 Kf3f2 Kd4c3 Re7e3 Kc3c4
Re3xe2 Ra2xa7 Re2c2 Kc4d3 Kf2g1
D13  00:07  -1.23   Re7d7 e4e3 Kf4f3 Ra1f1 Kf3g4 Rf1f8 Rd7f7 Rf8a8 Kg4f3 Kd4d3
Rf7b7 d5d4 Rb7d7 Ra8f8 Kf3g2
D13+  00:11  -1.22   Re7b7 e4e3 Kf4f3 Kd4d3 Rb7b3 Kd3d2 Rb3xe3 Ra1xa7 Re3e2
Kd2c3 Re2e3 Kc3c4 Re3e6 d5d4 Re6d6 Ra7f7 Kf3e2 Kc4c5 Rd6e6 Rf7f8
D13  00:13  -1.15   Re7b7 e4e3 Kf4f3 Kd4d3 Rb7b1 Ra1xa7 Rb1d1 Kd3c4 Rd1c1 Kc4d4
Rc1d1 Kd4e5 Rd1e1 d5d4 Re1xe3 d4xe3 Kf3g3
D14  00:19  -1.21   Re7b7 e4e3 Kf4f3 Kd4d3 Rb7b1 Ra1xa7 Rb1d1 Kd3c4 Rd1c1 Kc4d4
Rc1d1 Kd4e5 Kf3xe3 Ra7a3 Ke3d2 d5d4 Rd1c1 Ra3e3 Rc1e1
D15  00:30  -1.19   Re7b7 e4e3 Kf4f3 Kd4d3 Rb7b1 Ra1xa7 Rb1d1 Kd3c4 Rd1c1 Kc4d4
Rc1d1 Kd4e5 Kf3xe3 Ra7a3 Ke3f2 d5d4 Rd1e1 Ke5d5 Re1e7 d4d3 Kf2e3
D16  01:22  -1.22   Re7b7 e4e3 Kf4f3 Kd4d3 Rb7b1 Ra1xa7 Rb1d1 Kd3c4 Rd1c1 Kc4d4
Rc1d1 Kd4e5 Kf3xe3 Ra7a3 Ke3d2 Ke5d4 Kd2e1 Kd4e4 Ke1d2 d5d4 Rd1e1 Ke4d5 Re1e7
Ra3c3 Kd2e2
D17  02:43  -1.23   Re7b7 e4e3 Kf4f3 Kd4d3 Rb7b1 Ra1xa7 Rb1d1 Kd3c4 Kf3xe3 Ra7a3
Ke3f4 d5d4 Rd1c1 Ra3c3 Rc1a1 d4d3 Ra1e1




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