MESON Chess Problem Database

Problem Display
PID: 164974 (4N2Q/1Kppp3/1p6/2pk1B2/N2p1p2/5P2/1P6/2R5 w - - 0 1)

Egorov, Gennady Sergeevich

Oleinik, Aleksandr Petrovich

Sachmatija, 2008

4N2Q/1Kppp3/1p6/2pk1B2/N2p1p2/5P2/1P6/2R5

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Rxc5#
    • 1...c6
      • 2.Sxb6#
    • 1...d6
      • 2.Sxc7#
    • 1...e5
      • 2.Qg8#
    • 1...e6
      • 2.Be4#
  • Tries
    • 1.Kxc7?
      • threat
        • 2.Sxb6#
      • 1...b5
        • 2.Sb6#
        • 2.Rxc5#
      • 1...c4!
    • 1.Qf6?
      • threat
        • 2.Sxc7#
        • 2.Be4#
      • 1...c6
        • 2.Sxb6#
        • 2.Sc7#
        • 2.Be4#
      • 1...e6
        • 2.Be4#
      • 1...exf6!
  • Keys
    • 1.b3!
      • 1...d3
        • 2.Sc3#
      • 1...c4
        • 2.bxc4#
      • 1...b5
        • 2.Rxc5#
      • 1...c6
        • 2.Sxb6#
      • 1...d6
        • 2.Sxc7#
      • 1...e5
        • 2.Qg8#
      • 1...e6
        • 2.Be4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::R1(A),XP(c)
    • P(f);N_GUARD::S(D),XP(e)
    • P(g);SBLOCK::S(G),XP(f)
    • P(h);N_GUARD,SBLOCK::QAB(H)
    • P(h);SBLOCK::B(E)
  • Tries
    • Try
      • K(F);P-FLIGHT,XP(f)
      • Threat
        • S(D),XP(e)
      • Refutation
        • P(c);
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::B(E)
      • Refutation
        • P(h);XQ(H)
  • Actual
    • P(B);
    • Vars
      • P(a);N_GUARD::S(D)
      • P(c);OGATE::P(B),XP(c)
      • P(e);N_GUARD::R1(A),XP(c)
      • P(f);N_GUARD::S(D),XP(e)
      • P(g);SBLOCK::S(G),XP(f)
      • P(h);N_GUARD,SBLOCK::QAB(H)
      • P(h);SBLOCK::B(E)
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