MESON Chess Problem Database

Problem Display
PID: 172421 (8/2p5/2PR4/4k3/2K1P3/8/3Q4/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

8/2p5/2PR4/4k3/2K1P3/8/3Q4/8

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rf6?
      • threat
        • 2.Qf4#
        • 2.Qd4#
      • 1...Kxe4
        • 2.Qe1#
        • 2.Qf4#
        • 2.Qe2#
        • 2.Qd4#
      • 1...Kxf6!
    • 1.Qg5+?
      • 1...Kxd6
        • 2.Qf6#
      • 1...Kxe4!
  • Keys
    • 1.Qf2!
      • 1...Kxe4
        • 2.Re6#
      • 1...Kxd6
        • 2.Qf6#
      • 1...cxd6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT,XR(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(E)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT,XP(C)::R(E)
      • K(a);S_FLIGHT,XR(E)::QAR2(A)
      • P(b);SBLOCK,XR(E)::QAR1(A)
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