MESON Chess Problem Database

Problem Display
PID: 219129 (8/3K1p2/8/2pk4/8/2B5/6P1/6Q1 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1976

8/3K1p2/8/2pk4/8/2B5/6P1/6Q1

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qd4#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qd3#
      • 1...c4
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kc4!
    • 1.Qb1?
      • threat
        • 2.Qd3#
      • 1...c4
        • 2.Qf5#
      • 1...Kc4!
    • 1.Qd1+?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc4!
    • 1.Qe1?
      • 1...c4
        • 2.Qe5#
      • 1...f5
        • 2.Qe6#
      • 1...f6
        • 2.Qe6#
      • 1...Kc4!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qd3#
      • 1...Ke4
        • 2.Qf3#
      • 1...c4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • P(a);SBLOCK::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(a);SBLOCK::QAR1(A)
        • P(c);N_GUARD::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • P(a);SBLOCK::QAR2(A)
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