Solution

Solution

2) a) Serieshelpmate in thirty four, b) Move the e7 pawn to e6, then Serieshelpmate in thirty five.

Unusually, both solutions share the same opening sequence of thirty moves. Black plays as follows:

1.Kb4 2.Kc3 3.Kd2 4.Ke1 5.Kxf1 6.Ke2 7.Kd3 8.Kc4 9.Kb5 10.Ka6 11.Kxa7 12.Kb6 13.Kc5 14.Kd4

15.Ke3 16.Kf2 17.Kg1 18.Kxh2 19.Kg3 20.Kxh4 21.Kg3 22.Kxg2 23.Kxf3 24.Kxe4 25.Kxd5 26.Kc6

27.d5 28.d4 29.d3 30.d2

And now:

a) 31.d1B 32.Bg4 33.Bc8 34.Kd7
White now plays 35.b8N Mate

b) With the pawn on e7 moved to e6 31.d1R 32.Rd8 33.Rxe8 34.Kc7 35.Kd8
White now plays 35.b8Q Mate

All four underpromotions, two in each phase. Main page        Back to serieshelpmate page