How quickly can you work out white's winning plan here? This is a good one.
8/5p2/8/4K1P1/5p2/7P/4R1p1/1k4r1 w - - 0 1
1.Rxg2 (is worth looking) Rxg2. 2.Kxf4 and now with proper play(white may win or draw)
It took me 11 minutes to solve it.
1.Ke4 Rh12.Rxg2 Rxh33.Kxf4 Rh14.Rf2 Re15.Kg4 Re76.Kh5 Kc17.Kh6 Rc78.Rf5 Kc29.Kg7 Kd310.Rxf7 Rc111.g6 Kd412.Kf6 Rf1+13.Ke7 Re1+14.Kf8 Ra115.Rd7+ Kc316.g7 Rf1+17.Rf7 Ra118.g8=Q Ra8+19.Kg7 Rxg820.Kxg8It's a winning position for white.
Arein22 1.Ke4 f5+ doesn't fail because of taking the pawn en passant.
Alena, you and I have different ideas about what "solved" means. What about black's options at move 1?
Arein, It isn't crazy to look at 1.Rg2, but sacrificing the rook for the two pawns is hopeless to hold even a draw for white- the time it takes the white king to get to the f7 pawn, or just to get the king into a position to exchange it for the white g-pawn takes too long, and the white king can't advance the h-pawn without black putting the rook behind it tying the white king to it just to protect it.
Yes, you are right Yancey. I solved the easiest variation of this puzzle.
Yes it is,But if black blunders a move then the game is over.Ke4 is the correct one
1.Ke4! Kc12.Kf3 Rh13.Kxg2 f3+4.Kxf3 Kd15.Rf2 Rxh3+6.Ke4 Rh77.Ke5 Ke18.Rf5 Ke29.Kf6 Kd310.Rb5 Ke411.Rb7 Rh112.Rxf7 Rf1+13.Kg7 Rg114.g6 Ke515.Rb7 Ke616.Rb6+ Ke717.Kg8 Rh118.g7 Rh219.Rb4 Rh120.Rf4 Rg121.Kh7 Rh1+22.Kg6 Rg1+23.Kh6 Ke624.Kh7 Rh1+25.Kg8 Ke526.Kf8 Kxf427.g8=QIt's a win for white.
1.Ke4 f32.Kxf3 Rd13.Kxg2 Rd84.Kg3 Rd3+5.Kg4 Rc36.Rf2 Rc4+7.Kh5 Rc78.h4 Kc19.Kh6 Kb110.Kg7 f5+11.Kg6 Rc6+12.Kh5 f413.Rxf4 Rc514.Kg4 Rc115.g6 Rh116.h5 Kc217.Rf3 Rg1+18.Kf5 Ra119.g7 Ra820.Kg6 Kc121.Rf8 Ra6+22.Kh7 Ra723.Kh8 Ra524.g8=Q Rxh5+25.Kg7 Rg5+26.Kf6 Rxg827.Rxg8It's a win for white.
1.Ke4 f5+2.Kf3 Rf1+3.Kxg2 Rd14.Kf3 Rh15.Rg2 Rf1+6.Ke2 Rh17.g6 Kc28.g7 Rxh39.Rg1 Re3+10.Kf2 Re811.g8=Q Rxg812.Rxg8 Kc313.Kf3 Kb214.Kxf4 Kc315.Kxf5It's a win for white.
It took me one hour to solve these variations.
Ok, Alena, this is much better. Now focus on V-2 in this critical line- 1.Ke4 Kc1! 2.Kf3 Rh1 3.Kg2! f3 4.Kf3. You now need to consider one more option for black here at move 4 that isn't a transposition of any other line you discussed.
1.Ke4 Kc1!2.Kf3 Rh13.Kxg2 f3+4.Kxf3 Rxh3+5.Kg4 Kd16.Re6 Rh27.Rf6 Rg2+8.Kf5 Rf2+9.Ke5 Rg210.Rf5 Ke211.Kf6 Ke312.Kxf7 Rb213.g6 Ke414.Rh5 Rb7+15.Kg8 Rb216.g7 Rb8+17.Kh7 Rb718.Kh8 Rb8+19.g8=QIt's a win for white.The sixth move is hard to find.