Author: Paul
Date: 15:59:04 05/01/01
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On May 01, 2001 at 17:55:59, Heiner Marxen wrote: >Here are two PV lines from Chest: > >Qbxd8+ Qxd8 Qhxd8+ Nxd8 Qxd8+ Qxd8 gxf8Q+ Rxf8 Qxf7+ Rxf7 h8=Q+ Nf8 >Qxf8+ Rxf8 Rxd8+ Ke7 Bg5+ Rf6 Bxf6+ Kf7 Rf8+ Kxf8 Nxe6+ Ke8 >Qe7# > >Qdxd8+ Qgxd8 Qhxd8+ Nxd8 Qxd8+ Qxd8 gxf8Q+ Rxf8 Qxf7+ Rxf7 h8=Q+ Nf8 >Qxf8+ Rxf8 Rxd8+ Ke7 Bg5+ Rf6 Bxf6+ Kf7 Rf8+ Kxf8 Nxe6+ Ke8 >Qe7# > >They are basically equal. Other black moves lead to shorter solutions, except: >8... Kxd8 Nxe6+ Bxe6 Bg5+ Kc8 Qexb8+ Qxb8 Qaxb8+ Kd7 Qe7# > Kd7 Nxb8+ Kc8 Nxc6+ Kd7 Qed6# > Qb8 Qbb7# > Qxb8 Qe7+ Kc8 Qexb8# > Rxb8 Qe7+ Kc8 Qd8# > Rf6 Qxf6+ Kd7 Qfe7+ Kc8 Qd8# Hi Heiner, This was a nice position wasn't it? This is the second time in about 2 weeks we've had a mate in 13 that's really a mate in 13! :) Just one question though ... my line was this one: 1. Qbxd8+ Qxd8 2. Qhxd8+ Nxd8 3. Qxd8+ Qxd8 4. gxf8=Q+ Rxf8 5. Qxf7+ Rxf7 6. h8=Q+ Nf8 7. Qxf8+ Rxf8 8. Rxd8+ Kxd8 9. Nxe6+ Bxe6 10. Bg5+ Kd7 11. Qe7+ Kc8 12. Qexb8+ Qxb8 13. Qxb8# which is the first of your 2 lines, with the 8... Kxd8 deviation, but then at move 11 another deviation: Qe7+, you don't mention that one? I have a bug? Groetjes, Paul
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