MESON Chess Problem Database

Problem Display
PID: 77892 (8/8/6K1/3p4/4kPQ1/1R6/8/8 w - - 0 1)

Abramov, A

Krasnoe Znamya, 1985

8/8/6K1/3p4/4kPQ1/1R6/8/8

#2

4 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Qf3#
      • 2.Qf5#
  • Tries
    • 1.Kg5?
      • 1...d4
        • 2.Qf3#
        • 2.Qf5#
        • 2.Qe6#
        • 2.Qg2#
      • 1...Kd4!
    • 1.Kf6?
      • threat
        • 2.f5#
      • 1...d4
        • 2.Qf3#
        • 2.Qf5#
      • 1...Kd4!
    • 1.Ra3?
      • 1...d4
        • 2.Qf3#
        • 2.Qf5#
      • 1...Kd4!
    • 1.Rc3?
      • 1...d4
        • 2.Qf3#
        • 2.Qf5#
      • 1...Kd4!
    • 1.Rg3?
      • 1...d4
        • 2.Qf3#
        • 2.Qf5#
      • 1...Kd4!
    • 1.Rh3?
      • 1...d4
        • 2.Qf3#
        • 2.Qf5#
      • 1...Kd4!
    • 1.Qh3?
      • threat
        • 2.Qe3#
      • 1...Kxf4
        • 2.Qf5#
      • 1...d4
        • 2.Qf5#
        • 2.Qf3#
      • 1...Kd4!
    • 1.Qh5?
      • threat
        • 2.Qe5#
      • 1...Kxf4
        • 2.Qf5#
      • 1...Kd4!
    • 1.Qe6+?
      • 1...Kxf4
        • 2.Qf5#
      • 1...Kd4!
    • 1.Qd7?
      • 1...Kxf4
        • 2.Qf5#
      • 1...d4
        • 2.Qf5#
      • 1...Kd4!
    • 1.Qc8?
      • 1...Kxf4
        • 2.Qf5#
      • 1...d4
        • 2.Qf5#
      • 1...Kd4!
    • 1.Qg1?
      • threat
        • 2.Qe3#
      • 1...Kxf4
        • 2.Qd4#
      • 1...d4!
    • 1.Qg3?
      • threat
        • 2.Qe3#
      • 1...d4
        • 2.Qf3#
      • 1...Kd4!
  • Keys
    • 1.Qd1!
      • 1...Kxf4
        • 2.Qd4#
      • 1...d4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAR(C)+P(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT,XP(B)::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT,XP(B)::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(B)::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT,XP(B)::QAR1(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT,XP(B)::QAR1(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT,XP(B)::QAR2(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT,XP(B)::QAR2(C)
      • P(b);SBLOCK::QAB1(C)
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