Author: pavel
Date: 21:25:35 04/14/05
Go up one level in this thread
On April 13, 2005 at 12:24:40, pavel wrote: >[D] 3n4/rBp1p3/2P5/2PK4/k2N4/pp2R3/bppB2Rp/q1n1r1b1 w - - 0 1 > > > > > >Mate in 29 >M. Kwiatkowski >2nd Honourable Mention, The Problemist 1992 > >1.Rg4 Even if it threatens two short mates, with Nxb3+ and Ne6+, it is still a >nice key. 1...h1Q+ 2.Nf3+ Kb5 Now the Knight and Rook each have chores, but they >can only do them if they work as a fine-tuned team - one of them holding the Qh1 >at bay, while the other one does its job. 3.Rb4+ Ka5 4.Rbe4+! Now the Knight is >free. 4...Kb5 5.Nd4+ Ka4 6.Ne2+ Kb5 7.Nc3+ Ka5 8.Nxa2+ Why this Bishop had to go >will become clear later. 8...Kb5 Now it is the Rook's turn, but the Knight must >first unpin it. 9.Nc3+ Ka5 10.Ne2+ Kb5 11.Nd4+ Ka4 12.Nf3+! Kb5 13.Rb4+ Ka5 >14.Rbxb3+ The reason for removing this pawn will be revealed later too, but at >least we understand why the Ba2 had to go - it would have pinned the Rb3. >14...Ka4 15.Rb4+ Ka5 16.Rbe4+! and the Knight is unpinned once more. 16...Kb5 >17.Nd4+ Ka4 18.Ne2+ Kb5 19.Nc3+ Ka5 20.Na2+! It is a very nice feature of this >problem that the Knight goes back to the empty square a2 where it once captured >a Bishop. Now, it has to shield a3 from the Qa1. 20...Kb5 21.Ba6+ Finally, the >mating attack. 21...Rxa6 If 21...Kxa6, then 22.Rxa3+ (that is why Pb3 had to go >and Qxa3 had to be prevented) 22...Kb5 23.Nc3 mate. 22.Nc3+ Ka5 23.Ne2+ Kb5 >24.Nd4+ Ka4 25.Nf3+! One last unpin of the Rook, and it's mate: 25...Kb5 26.Rb4+ >Ka5 27.Rb6+ Ka4 28.Rxa6+ Kb5 29.Ra5 mate. > >http://www.xs4all.nl/~timkr/chess2/diarytxt.htm > New game 3n4/rBp1p3/2P5/2PK4/k2N4/pp2R3/bppB2Rp/q1n1r1b1 w - - 0 1 Analysis by Toga II 0.93: 1.Bxe1 b1Q -+ (-25.77) Depth: 1/10 00:00:00 1.Rxe1 b1Q -+ (-25.71) Depth: 1/21 00:00:00 1.Rxe1 b1Q -+ (-25.71) Depth: 2/23 00:00:00 1.Rxe1 b1Q 2.Rgxg1 b2+ 3.Ke4 hxg1Q 4.Rxg1 Nxb7 5.cxb7 Rxb7 -+ (-27.18) Depth: 3/23 00:00:00 1.Rg4 Rxb7 2.cxb7 Rxe3 3.Nf5+ Kb5 4.b8Q+ Ka6 -+ (-16.10) Depth: 3/45 00:00:00 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ = (0.00) Depth: 4/61 00:00:00 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rbe4+ Kb5 5.Nd4+ Ka4 6.Ne2+ Kb5 7.Nc3+ Ka5 8.Nxa2+ Kb5 9.Nc3+ Ka5 10.Ne2+ Kb5 11.Nd4+ Ka4 12.Nf3+ Kb5 13.Rb4+ Ka5 14.Rbxb3+ Ka4 15.Rb4+ Ka5 16.Rbe4+ Kb5 +- (#29) Depth: 5/67 00:00:00 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rbe4+ Kb5 5.Nd4+ Ka4 6.Ne2+ Kb5 7.Nc3+ Ka5 8.Nxa2+ Kb5 9.Nc3+ Ka5 10.Ne2+ Kb5 11.Nd4+ Ka4 12.Nf3+ Kb5 13.Rb4+ Ka5 14.Rbxb3+ Ka4 15.Rb4+ Ka5 16.Rbe4+ Kb5 (, MyTown 15.04.2005)
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