Test position, pawn endgame : Draw

[yanquis1972]

R3:

[+0.00] d=23 1...c4 2.dxc4 c5 3.Kg4 Kc7 4.Kf5 Kb6 5.Kg5 a6 6.Kf5 Ka5 7.Kf6 Ka4 8.Ke6 a5 9.Kf6 (0:00:05) 3258kN
[+0.00] d=22 1...c4 2.dxc4 c5 3.Kg4 Kc7 4.Kf5 Kb6 5.Kg5 a6 6.Kf5 Ka5 7.Kf6 Ka4 8.Ke6 a5 9.Kf6 (0:00:04) 3098kN
[+0.00] d=21 1...c4 2.dxc4 c5 3.Kg4 Kc7 4.Kf5 Kb6 5.Kg5 a6 6.Kf5 Ka5 7.Kf6 Ka4 8.Ke6 a5 9.Kf6 (0:00:04) 3037kN
[+0.00] d=20 1...c4 2.dxc4 c5 3.Kg4 Kc7 4.Kf5 Kb6 5.Kg5 a6 6.Kf5 Ka5 7.Kf6 Ka4 8.Ke6 a5 9.Kf6 (0:00:04) 3002kN
[+0.11] d=19 1...c4 2.dxc4 Ke7 3.Kg4 Kd6 4.Kf5 Kc5 5.Kxe5 Kxc4 6.Kf4 Kd3 7.e5 Kc2 8.e6 Kxb2 9.e7 Ka1 10.e8Q b2 11.Qc6 b1Q 12.Qxc7 Qb6 13.Qe5 Ka2 14.c4 Kxa3 15.c5 Qh6 16.Ke4 Qh1 (0:00:04) 2831kN
[+0.11] d=18 1...c4 2.dxc4 Ke7 3.Kg4 Kd6 4.Kf5 Kc5 5.Kxe5 Kxc4 6.Kf4 Kd3 7.e5 Kc2 8.e6 Kxb2 9.e7 Ka1 10.e8Q b2 11.Qc6 b1Q 12.Qxc7 Qb6 13.Qe5 Ka2 14.c4 Kxa3 15.c5 Qh6 16.Ke4 Qh1 (0:00:04) 2813kN
[+0.30] d=18 1...Ke7 2.Kf3 c4 3.Ke3 Kd7 4.a4 Kd6 (0:00:02) 1054kN
[+0.30] d=17 1...Ke7 2.Kg4 Kf6 3.Kh5 Ke7 (0:00:01) 832kN
[+0.30] d=16 1...Ke7 2.Kg4 Kf6 3.Kh5 Ke7 (0:00:01) 812kN
[+0.34] d=15 1...Kd7 2.Kg4 c4 (0:00:00) 177kN
[+0.83] d=15 1...Kd7 (0:00:00) 138kN
[+1.23] d=15 1...Kd7 (0:00:00) 122kN
[+1.43] d=15 1...Kd7 (0:00:00) 113kN
[+1.63] d=14 1...Ke7 2.Kg4 Kf6 3.Kh5 c4 4.dxc4 (0:00:00) 60kN

Shredder 12 even more impressive:--

[+0.00] d=19 1...c4 2.dxc4 c5 3.Kf3 Kc7 4.Ke2 a6 5.Kf3 Kb6 6.Ke3 Kb7 (0:00:01) 8166kN
[+0.00] d=18 1...c4 2.dxc4 c5 3.Kf3 Kc7 4.Ke2 a6 5.Kf3 (0:00:01) 8078kN
[+1.21] d=18 1...Ke7 2.Kf3 Kf6 3.Ke3 Kg6 4.a4 Kg5 5.a5 a6 6.d4 cxd4 7.cxd4 Kf6 8.Kd3 Ke6 9.Kc4 exd4 10.Kxd4 Kd6 11.Kd3 Ke6 12.Ke3 Ke5 (0:00:00) 1945kN
[+0.89] d=17 1...Ke7 2.Kf3 c4 3.dxc4 Kf6 4.Kg4 Kg6 5.c5 Kf6 6.Kh5 Ke6 7.Kh4 Kf6 8.Kg4 (0:00:00) 925kN
[+0.80] d=16 1...Ke7 2.Kf3 c4 3.dxc4 Kf6 4.Kg4 Kg6 5.Kh4 c5 6.Kg4 a6 7.a4 a5 8.Kh4 Kh6 (0:00:00) 804kN
[+0.84] d=15 1...Ke7 2.Kf3 c4 3.dxc4 c6 4.a4 Kf6 5.a5 c5 6.Ke2 a6 7.Kd3 Ke6 8.Ke3 Kd6 (0:00:00) 544kN
[+0.84] d=14 1...Ke7 2.Kf3 c4 3.dxc4 c6 4.a4 Kf6 5.a5 c5 6.Ke2 a6 7.Kd3 Ke6 8.Ke3 Kd6 (0:00:00) 431kN
[+0.84] d=13 1...Ke7 2.Kf3 c4 3.dxc4 Kd6 4.a4 Ke7 5.a5 a6 6.Kg4 Ke6 7.c5 Kf6 8.Kf3 Ke6 (0:00:00) 291kN
[+0.72] d=12 1...Ke7 2.Kf2 c4 3.dxc4 c5 4.Ke2 a5 5.a4 Kf7 6.Kf2 Ke7 (0:00:00) 229kN
[+0.84] d=12 1...Kd7 2.Kf3 c4 3.dxc4 a6 4.a4 Ke6 5.Kg4 Kf6 6.a5 Ke6 7.c5 Kf6 8.Kf3 Ke6 (0:00:00) 196kN