MESON Chess Problem Database

Problem Display
PID: 172486 (3K2n1/5k2/3R4/8/8/2Q5/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2001

3K2n1/5k2/3R4/8/8/2Q5/8/8

#2

3 + 2

6490 yacpdb 2018
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Rg6?
      • threat
        • 2.Qg7#
      • 1...Kf8
        • 2.Qg7#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Kxg6!
  • Keys
    • 1.Qh8!
      • 1...Kf8
        • 2.Rf6#
      • 1...Sf6
        • 2.Rxf6#
      • 1...Sh6
        • 2.Rf6#
      • 1...Se7
        • 2.Rf6#

Anticipated by 171458(1998)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • S(b);N_GUARD::QAR1(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT,P_SPINS(b)::R(B)
      • S(b);N_GUARD::R1(B),XS(b)
      • S(b);N_GUARD::R1(B)
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