Mar-18-20 | | stacase: 25.Rxh7 was rather easy to see, the rest not so much. I would have forged ahead with 26.Rh8+ |
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Mar-18-20 | | saturn2: I would have sacrificed the Ne2. 25. Rxh7 Rxe2 26. Qh6 and calculated some lines seeming good for white 26...Qg2 27. Rh8+ Kf7 28. Qh7+ Kf6 29. Qh4+ Kf7 -
30. Qf4+ Ke7 31. R1h7+
26...Qd4 27. Qg5+ Kf8 28. Qe7+ Kg8 29. Qf7# |
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Mar-18-20 | | Walter Glattke: A) 30.-Qg7 31.Qxe6+ Kf8 (Qf7 Rh8+ and QxQ) 32.Rf1+ Qf7 33.Qxf7# B) 30.-Qg2 31.Qh7+ Kf8 32.Qh8+ Ke7 33.Rh7+ Kd6 34.Qxd4+ (34.Qxa8 Qf1+ 35.Kc2 Qe2+ 36.Kb3 Qxc3+ 37.Ka4 Qxh7 38.Qxa7 draw) 34.-Qd5 35.Qb4+ B2) 35.-Qc5 36.Rd7+ QxQ, B3) 35.-Kc6 36.Qxb7+ B3) 35.-Ke5 36.Rh5+ C) If black plays 26.-e5, the queen is not attacked, so 27.Rh8+ Kg7 28.RxR wins, D) 26.-d4 27.Rh8+? Kg7 28.R1h7+ Kg6 29.Qc1 Rxh8 30.Qh6+ Kf6 31.Rf7+ Ke5 32.Qxh8+ adventorous |
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Mar-18-20
 | | agb2002: White has a knight for a bishop and two pawns.
Black threatens Q(R)xe2.
Black's position has a number of weaknesses: the h7 pawn, the diagonal a1-h8, the defenseless rook on a8, the c-file, etc. These details suggest 25.Rxh7: A) 25... Qxe2 26.Qg5+ (far better than 26.Qxe2 Rxe2 27.Rh8+ and 28.Rxa8 with not much advantage) 26... Kf8 27.Qe7+ Kg8 28.Qg7#. B) 25... Rxe2 26.Qc3
B.1) 26... Kf8 27.Qf6+ and mate next.
B.2) 26... d4 27.Qc7
B.2.a) 27... e5 28.Rxd7 (threatens 29.Qc4+ and 29.Rh8+ and mate follows in both cases) 28... Rxb2+ 29.Kxb2 Qg2+ 30.Ka3 Qxh1 31.Rg7+ Kh8 (31... Kf8 32.Qf7#) 32.Qxe5 wins. B.2.b) 27... Rxb2+ 28.Kxb2 Qe2+ 29.Ka1 Qxd3 30.Rh1+ Kf7 31.Qxd7+ wins. B.3) 26... e5 27.Rh8+ followed by 28.Rxa8 looks winning. |
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Mar-18-20 | | tigreton: I also thought the move was 26. Qh6, but then follows 26 ... Rxb2+ and the black queen attacks along the fourth rank.
26. Qc3 is a multitask move, attacks and keeps b2 protected. After 26 ... d4 the black queen is no longer able to reach b4 or a4, so her white colleague can safely travel to c7. |
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Mar-18-20 | | Walter Glattke: So I tested 26.-Rxb2+ 27.Kxb2 Qd4+ 28.Kc1 Rc8+/28.Ka3 Qxc4+/28.Kb1 Qxc3+/28.Kc2 Rc8+/28.Kb3 Qa4+ check with Ba4+ seems not to be good then. 28.Kc2 Rc8+ 29.Kd2 Qb2+ 30.Ke3 d4+ 31.Kf4 Rf8+. Always check, no escape found. |
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Mar-18-20
 | | chrisowen: Yes which means to get it already no? |
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Mar-18-20 | | gawain: I did not see the right way here. Too focused on checkmate, not focused enough on how to win material decisively. |
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Mar-18-20 | | RandomVisitor: After 13...Rxf5
 click for larger viewStockfish_20031417_x64_modern:
<44/70 12:39 +1.73 14.Bd3 Rf6 15.h4> Qf4 16.Ne4 Rf7 17.Qxf4 Rxf4 18.Nd6 Nd8 19.f3 Nf7 20.Nxc8 Rxc8 21.Bb5 Rc7 22.Bxd7 e5 23.Be6 Kg7 24.h5 Re7 25.Bd5 Nd6 26.c3 Nf5 27.hxg6 hxg6 28.Rhe1 Ng3 29.b4 g5 30.Kb2 Kf6 31.Bb3 g4 32.Rd8 e4 33.fxe4 Rfxe4 34.Rxe4 Rxe4 35.Rg8 Re2+ 36.Bc2 Ke6 37.Rxg4 Rxg2 38.Kb3 |
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Mar-18-20 | | RandomVisitor: After 16...Ne5
 click for larger viewStockfish_20031417_x64_modern:
<46/58 03:46 +1.65 17.Qe2 Rxd3 18.Rxd3 Nxd3+ 19.Qxd3 Bd7 20.h5> Be8 21.Re1 Qb6 22.f4 Bf7 23.h6 Qf2 24.Qe2 Qxe2 25.Nxe2 Kf8 26.Kd2 Ke7 27.Nd4 Kf6 28.Re5 Rd8 29.a4 Rc8 30.Kd3 Rg8 31.Nf3 Rb8 32.Ng5 Bg8 33.b3 b6 34.Nf3 Rd8 35.Kc3 Bf7 36.Ng5 Bg8 37.Kd2 Ke7 38.Kd3 Ra8 39.Nf3 Rc8 40.Nd4 Bf7 41.Kd2 Kf6 42.Nf3 Rf8 43.Ng5 Bg8 44.Re1 |
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Mar-18-20
 | | Breunor: According to a Stockfish 26 Qc3 is third best, on 41 ply, however still easily won at At 5.59. Better are Rh8 ch and Qc1 which are 6.25 and 6.24. |
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Mar-18-20
 | | perfidious: All of which proves that White had various ways of closing the show, which detracts from the value of the puzzle. |
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