MESON Chess Problem Database

Problem Display
PID: 103519 (8/8/8/8/4Q3/4K1pk/7B/7B w - - 0 1)

Chernyavsky, Mykola Vasilovich

Shakhnazaryan, Albert Serapionovic

Bospor, 1995

8/8/8/8/4Q3/4K1pk/7B/7B

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh2
      • 2.Qg2#
  • Tries
    • 1.Bf3?
      • threat
        • 2.Qh7#
      • 1...gxh2
        • 2.Qg4#
      • 1...Kxh2!
    • 1.Qf3?
      • threat
        • 2.Qh5#
        • 2.Qxg3#
      • 1...Kxh2
        • 2.Qg2#
      • 1...Kh4!
  • Keys
    • 1.Kf4!
      • threat
        • 2.Qh7#
      • 1...Kxh2
        • 2.Qg2#
      • 1...Kh4
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,XB(B)::QAR1(D)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAR(D)
      • Vars
        • P(a);SBLOCK,XB(B)::QAB1(D)
      • Refutation
        • K(b);P-FLIGHT,XB(B)
    • Try
      • Q(D);P_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT,XB(B)::QAR1(D)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • QAR(D)
    • Vars
      • K(b);P-FLIGHT,XB(B)::QAR1(D)
      • K(b);P-FLIGHT::QAR(D)
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