Zugzwang position

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Vinvin
Posts: 5334
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Zugzwang position

Post by Vinvin »

This one is not very interresting now because engines have no more problem for some years, but you're developping an engine, it's an interresting test (Fritz 5.32 don't see the clear win).
95.Kc2 ? h4! and white is in Zugzwang !

Speedy Volita,R - Pacificrabbit,Z, 60m + 15s, rated rapid 2008
[d]3R4/8/4k3/7p/5P2/2p2P1P/1n1p4/3K4 w - - 0 1

Analysis by Fritz 5.32:
...
95.Rc2 h4 96.f5+ Rf6 97.Td6+ Re5 98.Td8 d1D+ 99.Txd1 Cxd1
µ (-1.12) Profondeur: 8/17 00:00:00 41kN
95.Rc2--
-+ (-1.44) Profondeur: 9/21 00:00:00 70kN
95.Rc2
-+ (-1.44) Profondeur: 9/21 00:00:00 82kN
95.Re2!
-+ (-1.41) Profondeur: 9/21 00:00:00 167kN
95.Re2--
-+ (-1.72) Profondeur: 10/19 00:00:00 212kN
95.Re2
-+ (-1.72) Profondeur: 10/23 00:00:00 250kN
95.Rc2!
-+ (-1.69) Profondeur: 10/23 00:00:00 268kN
95.Rc2!
µ (-1.37) Profondeur: 11/23 00:00:00 365kN
95.Re2!
µ (-1.34) Profondeur: 11/23 00:00:00 473kN
95.Re2--
-+ (-1.66) Profondeur: 12/23 00:00:00 652kN
95.Re2
-+ (-1.66) Profondeur: 12/24 00:00:00 805kN
95.Rc2!
-+ (-1.62) Profondeur: 12/24 00:00:00 885kN
95.Rc2!
µ (-1.31) Profondeur: 13/23 00:00:00 1180kN
95.Re2!
µ (-1.28) Profondeur: 13/26 00:00:00 1682kN
95.Re2--
-+ (-1.59) Profondeur: 14/25 00:00:00 2059kN
95.Re2
-+ (-1.59) Profondeur: 14/25 00:00:01 2805kN
95.Rc2!
-+ (-1.56) Profondeur: 14/25 00:00:01 3209kN
95.Rc2!
µ (-1.25) Profondeur: 15/27 00:00:01 4554kN
95.Rc2!
µ (-0.94) Profondeur: 16/29 00:00:03 8559kN
95.Rc2!
³ (-0.62) Profondeur: 17/31 00:00:06 16124kN
95.Rc2--
µ (-0.94) Profondeur: 18/33 00:00:08 20695kN
95.Rc2
µ (-0.94) Profondeur: 18/33 00:00:11 29329kN
95.Rc2!
³ (-0.62) Profondeur: 19/35 00:00:58 146mN
Tony Thomas

Re: Zugzwang position

Post by Tony Thomas »

Isnt d1e2 another possible move?