MESON Chess Problem Database

Problem Display
PID: 230148 (b2n2K1/5QB1/3pPP1N/4kPN1/2P5/3qP1P1/7n/1r1R4 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Shavirin, Valery Mikhailovich

Zadachi i Etyudi, 2000

b2n2K1/5QB1/3pPP1N/4kPN1/2P5/3qP1P1/7n/1r1R4

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.exd4#
    • 1...Sxe6
      • 2.Qxe6#
    • 1...d5
      • 2.Qc7#
  • Tries
    • 1.Qg6?
      • threat
        • 2.f7#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...Sxe6
        • 2.Shf7#
      • 1...Sg4
        • 2.Sxg4#
      • 1...Sf7
        • 2.Shxf7#
      • 1...d5!
    • 1.Qe7?
      • threat
        • 2.f7#
      • 1...Qxf5
        • 2.Qxd6#
      • 1...Sf7
        • 2.exf7#
      • 1...Sg4!
  • Keys
    • 1.Qb7!
      • threat
        • 2.f7#
      • 1...Qxf5
        • 2.Rd5#
      • 1...Sxe6
        • 2.Sgf7#
      • 1...d5
        • 2.Qc7#
      • 1...Sg4
        • 2.Sf3#
      • 1...Sf7
        • 2.Sgxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(c);OGATE::P(B),XQ(c)
    • S(g);OGATE,XP(G)::QAR1(J),XS(g)
    • P(e);OGATEB::QAB(J)
  • Tries
    • Try
      • Q(J);
      • Threat
        • B(K)+P(H)
      • Vars
        • Q(c);OGATE,XP(E)::QAR1(J),XQ(c)
        • S(g);N_GUARD,XP(G)::S(I)
        • S(b);N_GUARD::S(I),XS(b)
        • S(g);N_GUARD::S(I),XS(g)
      • Refutation
        • P(e);
    • Try
      • Q(J);
      • Threat
        • B(K)+P(H)
      • Vars
        • Q(c);N_GUARD,XP(E)::QAB1(J),XP(e)
        • S(g);OGATE::QAR(J)+P(G),XS(g)
      • Refutation
        • S(b);
  • Actual
    • Q(J);
    • Threat
      • B(K)+P(H)
    • Vars
      • Q(c);OGATE,XP(E)::R1(A)
      • S(g);N_GUARD,XP(G)::S(F)
      • P(e);OGATEB::QAB(J)
      • S(b);N_GUARD::S(F)
      • S(g);N_GUARD::S(F),XS(g)
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