MESON Chess Problem Database

Problem Display
PID: 36887 (2b2B2/P2pP3/1b1k2N1/2p5/4B2K/8/8/6Q1 w - - 0 1)

Pilchenko, Viacheslav Karlovich

2nd Prize, Moiseev MT, 1984

2b2B2/P2pP3/1b1k2N1/2p5/4B2K/8/8/6Q1

#2

7 + 5

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Bc7
      • 2.e8Q#
      • 2.e8R#
    • 1...c4
      • 2.Qxb6#
  • Tries
    • 1.Qa1?
      • threat
        • 2.Qe5#
      • 1...Ke6
        • 2.e8Q#
      • 1...Kc7!
    • 1.Qg4?
      • threat
        • 2.e8S#
      • 1...Bc7
        • 2.e8Q#
        • 2.e8S#
        • 2.e8B#
        • 2.e8R#
      • 1...Bd8
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Kc7!
    • 1.a8S?
      • threat
        • 2.e8Q#
        • 2.e8R#
      • 1...Ba5
        • 2.e8Q#
        • 2.e8R#
      • 1...Ba7
        • 2.e8Q#
        • 2.e8R#
      • 1...Bc7
        • 2.e8Q#
        • 2.e8R#
      • 1...Bd8
        • 2.exd8S#
      • 1...Ba6
        • 2.e8Q#
        • 2.e8R#
      • 1...Bb7
        • 2.e8Q#
        • 2.e8R#
      • 1...c4
        • 2.Qxb6#
        • 2.e8Q#
        • 2.e8R#
      • 1...Ke6!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qe5#
      • 1...Ke6
        • 2.e8Q#
      • 1...Kc7
        • 2.e8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK::P=Q
    • P(a);OGATE::QAR2(A),XB(b)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);P-FLIGHT::P=Q
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • P=S
      • Vars
        • B(b);OGATE,P_PINP(F)::PXB(b)=Q
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(E);
      • Threat
        • P=Q
      • Vars
        • B(b);::P=Q
        • B(b);OGATE,P_PINP(F)::PXB(b)=S
        • B(e);::P=Q
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);P-FLIGHT::P=Q
      • K(c);S_FLIGHT::P=S
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