MESON Chess Problem Database

Problem Display
PID: 172435 (8/8/8/2QP1Rr1/6k1/6P1/6K1/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

8/8/8/2QP1Rr1/6k1/6P1/6K1/8

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qe3?
      • threat
        • 2.Rxg5#
        • 2.Qxg5#
        • 2.Qf3#
      • 1...Kxf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Qxg5#
      • 1...Rh5
        • 2.Qf4#
        • 2.Qf3#
        • 2.Qe4#
      • 1...Rg6
        • 2.Qf4#
        • 2.Qf3#
        • 2.Qe4#
      • 1...Rg7
        • 2.Qf4#
        • 2.Qf3#
        • 2.Qe4#
      • 1...Rg8
        • 2.Qf4#
        • 2.Qf3#
        • 2.Qe4#
      • 1...Rxf5!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Rxg5#
        • 2.Qxg5#
      • 1...Kxf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Qxg5#
      • 1...Rxf5
        • 2.Qh4#
      • 1...Rh5
        • 2.Rf4#
        • 2.Qe4#
      • 1...Rg6
        • 2.Qe4#
      • 1...Rg7
        • 2.Qe4#
      • 1...Rg8
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • K(a);OGATEB,P_PINP(B),S_FLIGHT,XR(E)::QAB1(C)
        • K(a);P_PINP(B),P_SPINR(b),S_FLIGHT::QAR1(C),XR(b)
      • Refutation
        • R(b);XR(E)
  • Actual
    • Q(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);OGATEB,P_PINP(B),S_FLIGHT,XR(E)::QAB1(C)
      • K(a);P_PINP(B),P_SPINR(b),S_FLIGHT::QAR1(C),XR(b)
      • R(b);OGATE,SBLOCK,XR(E)::QAR1(C)
      • R(b);::QAR2(C)
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