MESON Chess Problem Database

Problem Display
PID: 215519 (8/8/1ppp4/2k5/7Q/2B5/K7/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1974

8/8/1ppp4/2k5/7Q/2B5/K7/8

#2

3 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Qd4#
    • 1...d5
      • 2.Qb4#
  • Tries
    • 1.Qa4?
      • 1...b5
        • 2.Qd4#
      • 1...d5
        • 2.Qb4#
      • 1...Kd5!
    • 1.Qe4?
      • 1...d5
        • 2.Qb4#
      • 1...b5
        • 2.Qd4#
      • 1...Kb5!
  • Keys
    • 1.Kb3!
      • threat
        • 2.Qc4#
      • 1...Kb5
        • 2.Qc4#
      • 1...Kd5
        • 2.Qc4#
      • 1...b5
        • 2.Qd4#
      • 1...d5
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAB1(C)
    • P(d);SBLOCK::QAB1(C)
  • Tries
    • Try
      • Q(C);
      • Vars
        • P(b);SBLOCK::QAB1(C)
        • P(d);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(d);SBLOCK::QAB1(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT::QAB1(C)
      • P(b);SBLOCK::QAB1(C)
      • P(d);SBLOCK::QAB1(C)
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