MESON Chess Problem Database

Problem Display
PID: 177875 (8/B4p2/3K4/8/2p1k3/8/5Q1n/3N2N1 w - - 0 1)

Novitski, Petr Adrinovich

Sahs (Latvia), 1990

8/B4p2/3K4/8/2p1k3/8/5Q1n/3N2N1

#2

5 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qe2#
    • 1...Sf1
      • 2.Qf3#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sg4
      • 2.Qf3#
    • 1...f5
      • 2.Qe3#
      • 2.Qd4#
  • Tries
    • 1.Se3?
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Qc2#
      • 1...f5
        • 2.Qxf5#
      • 1...Sf3!
    • 1.Qf1?
      • threat
        • 2.Sc3#
      • 1...Sf3
        • 2.Qxf3#
      • 1...c3
        • 2.Sxc3#
      • 1...Sxf1!
    • 1.Qf6?
      • threat
        • 2.Sf2#
      • 1...Sg4
        • 2.Qf3#
      • 1...Kd3!
    • 1.Qxf7?
      • threat
        • 2.Sf2#
      • 1...Sg4
        • 2.Qf3#
      • 1...Kd3!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qc2#
      • 1...Kd3
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • K(c);S_FLIGHT::QAB1(C)
    • S(a);N_GUARD::QAB1(C)
    • S(a);N_GUARD::QAB1(C),XS(a)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(C)
      • Vars
        • K(c);S_FLIGHT::QAB1(C)
        • P(d);::QAB1(C),XP(d)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Threat
        • S(A)
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
        • P(b);::S(A),XP(b)
      • Refutation
        • S(a);XQ(C)
    • Try
      • Q(C);
      • Threat
        • S(A)
      • Vars
        • S(a);N_GUARD::QAB1(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);XP(d)
      • Threat
        • S(A)
      • Vars
        • S(a);N_GUARD::QAB1(C)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • B(E);
    • Threat
      • QAB(C)
    • Vars
      • K(c);S_FLIGHT::QAB(C)
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