MESON Chess Problem Database

Problem Display
PID: 213141 (8/4K3/1pp5/1k6/6R1/P7/3Q4/8 w - - 0 1)

Kichigin, Viktor Vladimirovich

Land og Folk, 1978

8/4K3/1pp5/1k6/6R1/P7/3Q4/8

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qg5#
  • Tries
    • 1.Qf4?
      • 1...Ka5
        • 2.Qa4#
      • 1...Kc5
        • 2.Rg5#
        • 2.Qe5#
        • 2.Qg5#
        • 2.Qc4#
        • 2.Qf5#
      • 1...c5
        • 2.Qa4#
      • 1...Ka6!
    • 1.Qc2?
      • 1...Ka5
        • 2.Qa4#
      • 1...c5
        • 2.Qa4#
      • 1...Ka6!
    • 1.Qe2+?
      • 1...Kc5
        • 2.Qc4#
        • 2.Qe5#
      • 1...Ka5!
    • 1.Qd3+?
      • 1...Kc5
        • 2.Rg5#
        • 2.Qc4#
        • 2.Qf5#
      • 1...Ka5!
    • 1.Qd4?
      • 1...Ka5
        • 2.Qa4#
      • 1...c5
        • 2.Qa4#
      • 1...Ka6!
    • 1.a4+?
      • 1...Kc5
        • 2.Qg5#
        • 2.Qd4#
        • 2.Qd6#
      • 1...Ka6!
  • Keys
    • 1.Ra4!
      • threat
        • 2.Qb4#
      • 1...Kxa4
        • 2.Qb4#
      • 1...Kc5
        • 2.Qg5#
      • 1...c5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(C);
    • Threat
      • QAR1(A)
    • Vars
      • K(a);S_FLIGHT,XR(C)::QAR1(A)
      • K(a);P-FLIGHT::QAR(A)
      • P(c);OGATEB,SBLOCK::QAB(A)
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