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Subject: Re: A proposed WAC replacement for testing

Author: Gian-Carlo Pascutto

Date: 07:18:23 09/19/01

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>2k4r/1pp2ppp/p1p1bn2/4N3/1q1rP3/2N1Q3/PPP2PPP/R4RK1 w - - bm Nd5; id "ECM.952"; Nd5 may be the best move but it is not particularly convincing. "DarkThought" scores all three moves Nb5, Nd5, and Rad1 as roughly +0.5 but finally prefers Nd5, too (just slightly)."

After a while, I get around +1 to +1.5 for Nd5 and +0.5 for the alternates. I
keep this one.

>b1n1r1k1/2q2p1p/p4Pp1/1pBP4/4B1P1/2P1Q3/P4K1P/4R3 w - - bm Qh6; id "ECM.1009"; "Qh6 leads to material gain, and Junior finds it quickly, but after a few seconds insists on the quiet and subtle Kg2! Black loses a rook at least."

I concur. Kg2 eliminates all counterplay  and is better than Qh6

>2k3r1/pp2rp2/1np5/2Np1p2/P2P3p/1R2P1Pq/2Q2P1P/1R4K1 w - - bm Nxb7; id >"ECM.1073"; ""DarkThought" says = [ a5 ] hxg3 fxg3 f4 Nxb7 ... is equally good (score = +1.3 after iteration #13, looks like a transposition)"

Eliminated.

>rq3r1k/p2n1p2/1pbb1np1/2p2BB1/8/2N2N2/PP3QPP/3R1RK1 w - - bm Rxd6; id >"ECM.1169"; Qh4+ may be better.
Eliminated.

>r2rnbk1/pp3ppp/1q4n1/3p1N2/5P2/1PQB4/PBP3PP/4RR1K w - - bm Nh6+; id "ECM.1339"; crafty goes back and forth among Nh6+, a3, and Qd4

Eliminated.

>3rr1k1/1p1qb2p/pP4p1/2p2p2/4RQ2/3P4/1PPB2PP/4R1K1 w - - bm Bc3; id "ECM.1358"; I'm not sure about this one. crafty prefers Re6, but need to look deeper.
Eliminated.

>6k1/rnqb3p/5ppQ/2pPp3/p1N1P3/2PB3P/5PP1/1R4K1 w - - bm f4; id "ECM.1360"; I'm not sure about this one, either. Qh4 is another possibility
Eliminated.

>r1b2rk1/1p3pbp/2p3p1/p1q5/1P6/1Q4P1/1P2PPBP/R1B1R1K1 b - - bm Be6; id >"ECM.1529"; crafty switches between Be6 and Qe5, but with no convincing score.
I don't 'get' Qe5. Can you give a PV? I keep this one for now.

>r1b5/p2k1r1p/3P2pP/1ppR4/2P2p2/2P5/P1B4P/4R1K1 w - - bm Bxg6; id "ECM.1545"; crafty thinks cxb5 is much better.

This is 'Beyen's Trick'. After Bxg6 hxg6 Re7+ Rxe7 dxe7 Kxe7 Td8 white wins, but
cxb5 seems to
be just as well. Eliminated.

>4r3/p4pk1/6p1/P1pB2Pp/2P3b1/2p1N1P1/Qb1r1P2/6K1 b - - bm Rxe3; id "ECM.1572"; crafty thinks Kh7 is also very good.
Eliminated.

>r1b2r1k/ppppq1pp/2n1n3/6N1/2B2P2/4B3/PPP3PP/R2Q1RK1 w - - bm Nxh7; id >"ECM.1612"; I'm not sure about this one. If it is correct, it is very difficult
Nxe6 dxe6 gives a small advantage for white, but Nxh7 Kxh7 Qh5+ Kg8 f5 looks
much better

>r2q3r/2pkb1p1/p2p1n2/4p1p1/Pp2P1P1/1QP5/1P1P2PP/RNB2RK1 b - - bm Rxh2;  "I don't know about this. The continuation I analyze is 1... Rxh2 2.Kxh2 Qh8+ 3.Kg1 Nxg4 4.Rf7 Qh2+ 5.Kf1 Qh1+ 6.Ke2 Qxg2+ (not Qxc1 7.Rf1) 7.Kd3 Nf2+ 8.Rxf2 is unclear."

5. .. Rh8! instead is crushing

--
GCP



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