MESON Chess Problem Database

Problem Display
PID: 172230 (4k2r/7R/2K1P3/8/8/8/2Q5/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1996

4k2r/7R/2K1P3/8/8/8/2Q5/8

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kb7?
      • threat
        • 2.Qc8#
      • 1...Kd8
        • 2.Qc8#
      • 1...Kf8
        • 2.Qc8#
      • 1...Rxh7+!
    • 1.Qb1?
      • threat
        • 2.Qb8#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Qb8#
      • 1...Rxh7!
    • 1.Qb3?
      • threat
        • 2.Qb8#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Qb8#
      • 1...Rxh7!
    • 1.Qa4?
      • threat
        • 2.Qa8#
      • 1...Kd8
        • 2.Qa8#
      • 1...Kf8
        • 2.Qa8#
      • 1...Rxh7!
    • 1.Qg6+?
      • 1...Kf8
        • 2.Qf7#
        • 2.e7#
      • 1...Kd8!
    • 1.Qa2?
      • threat
        • 2.Qa8#
      • 1...Kd8
        • 2.Qa8#
      • 1...Kf8
        • 2.Qa8#
      • 1...Rxh7!
    • 1.Qb2?
      • threat
        • 2.Qxh8#
        • 2.Qb8#
      • 1...Kd8
        • 2.Qxh8#
        • 2.Qb8#
      • 1...Kf8
        • 2.Qxh8#
        • 2.Qb8#
      • 1...Rf8
        • 2.Qb8#
      • 1...Rg8
        • 2.Qb8#
      • 1...Rxh7!
    • 1.Qh2?
      • threat
        • 2.Qb8#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Qb8#
      • 1...Rxh7!
    • 1.Qc5?
      • threat
        • 2.Rxh8#
        • 2.Qe7#
      • 1...Kd8
        • 2.Rxh8#
      • 1...Rg8
        • 2.Qe7#
      • 1...Rf8
        • 2.Qe7#
      • 1...Rxh7!
  • Keys
    • 1.Kd6!
      • threat
        • 2.Rxh8#
        • 2.Qc8#
      • 1...Kd8
        • 2.Rxh8#
      • 1...Kf8
        • 2.Qc8#
      • 1...Rxh7
        • 2.Qc8#
      • 1...Rf8
        • 2.Qc8#
      • 1...Rg8
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • R(b);CHECK,XR(D)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • R(b);XR(D)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • R(b);XR(D)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • R(b);XR(D)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • R(b);XR(D)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);SBLOCK::QAR(A)
        • R(b);::QAR(A)
      • Refutation
        • R(b);XR(D)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • R(b);XR(D)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::R(D),XR(b)
        • R(b);::QAR1(A)
      • Refutation
        • R(b);XR(D)
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::R(D),XR(b)
      • K(a);P-FLIGHT::QAR(A)
      • R(b);XR(D)::QAR2(A)
      • R(b);SBLOCK::QAR2(A)
      • R(b);::QAR2(A)
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