MESON Chess Problem Database

Problem Display
PID: 79230 (8/8/8/2N5/Pk5B/8/4Q3/R3K3 w Q - 0 1)

Asov, Aleksei

Hlas l'udu, 1990

8/8/8/2N5/Pk5B/8/4Q3/R3K3

#2

6 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Qb5#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Qb5#
      • 1...Ka5
        • 2.Qb5#
      • 1...Kxc5!
    • 1.Se4?
      • threat
        • 2.Qb5#
      • 1...Ka5
        • 2.Qb5#
      • 1...Kb3!
    • 1.Bf2?
      • 1...Ka5
        • 2.Qb5#
      • 1...Kc3!
    • 1.Bf6?
      • threat
        • 2.Qb5#
      • 1...Ka5
        • 2.Qb5#
      • 1...Kxc5!
    • 1.Be7?
      • 1...Ka5
        • 2.Qb5#
      • 1...Kc3!
    • 1.Rb1+?
      • 1...Ka3
        • 2.Rb3#
        • 2.Qb2#
      • 1...Kc3
        • 2.Bf6#
        • 2.Qd3#
      • 1...Ka5
        • 2.Bd8#
        • 2.Rb5#
        • 2.Qb5#
        • 2.Qa6#
        • 2.Qd2#
      • 1...Kxc5!
    • 1.Rc1?
      • 1...Ka5
        • 2.Qb5#
      • 1...Ka3!
    • 1.Qd3?
      • 1...Ka5
        • 2.Qb5#
      • 1...Kxc5!
    • 1.Qc4+?
      • 1...Ka5
        • 2.Bd8#
        • 2.Qb5#
      • 1...Kxc4!
    • 1.Qd2+?
      • 1...Kc4
        • 2.Rc1#
      • 1...Kxc5!
    • 1.Qe4+?
      • 1...Kc3
        • 2.Bf6#
      • 1...Ka5
        • 2.Bd8#
      • 1...Kxc5!
  • Keys
    • 1.0-0-0!
      • 1...Ka3
        • 2.Qb2#
      • 1...Kc3
        • 2.Be1#
      • 1...Ka5
        • 2.Qb5#
      • 1...Kxc5
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(C)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • S(F);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
  • Actual
    • K(B);0-0-0
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);S_FLIGHT::B(E)
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);S_FLIGHT,XS(F)::QAR1(C)
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