MESON Chess Problem Database

Problem Display
PID: 36362 (2Kb2Q1/2pPP1p1/2r2k2/5Bp1/b2NP3/q7/1N6/B7 w - - 0 1)

Kopaev, Viacheslav Georgievich

1st Prize, Umnov MT, 1994

2Kb2Q1/2pPP1p1/2r2k2/5Bp1/b2NP3/q7/1N6/B7

#2

9 + 8

3705 Album Russia (1992-1994) 2000
3681 FIDE Album (1992-1994) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qe6#
    • 1...Rc2
      • 2.Qe6#
    • 1...Rc3
      • 2.Qe6#
    • 1...Rc4
      • 2.Qe6#
    • 1...Rc5
      • 2.Qe6#
    • 1...Re6
      • 2.Qxe6#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Qf8#
      • 1...Kxe7
        • 2.Qxg7#
      • 1...Qxe7
        • 2.Se6#
      • 1...Rxc4
        • 2.Qe6#
      • 1...Bxe7
        • 2.e5#
      • 1...g4!
    • 1.e5+?
      • 1...Kxe7
        • 2.Qxg7#
        • 2.Qe8#
      • 1...Kxe5!
    • 1.e8S+?
      • 1...Ke7
        • 2.Qxg7#
      • 1...Ke5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qxg7#
      • 1...Ke5
        • 2.Sc4#
      • 1...Kxe7
        • 2.Qf8#
      • 1...Qxe7
        • 2.Sc4#
      • 1...Rxe6
        • 2.Qxe6#
      • 1...g6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(d);N_GUARD::QAR1(I)
    • R(d);N_GUARD::QAR1(I),XR(d)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR2(I)
      • Vars
        • K(e);S_FLIGHT,XP(G)::QAR2(I),XP(g)
        • Q(a);N_GUARD,SBLOCK,XP(G)::B(A)+S(C)
        • R(d);N_GUARD,XS(B)::QAR1(I)
        • B(h);SBLOCK,XP(G)::P(D)
      • Refutation
        • P(c);
    • Try
      • P(D);CHECK
      • Refutation
        • K(e);S_FLIGHT,XP(D)
    • Try
      • P(G);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR2(I),XP(g)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAB1(I),XP(g)
    • Vars
      • K(e);S_FLIGHT::B(A)+S(B),DCHECK
      • K(e);S_FLIGHT,XP(G)::QAB1(I)
      • Q(a);N_GUARD,SBLOCK,XP(G)::B(A)+S(B)
      • R(d);OGATE,XS(C)::QAR1(I),XR(d)
      • P(g);::QAB1(I)
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