MESON Chess Problem Database

Problem Display
PID: 245504 (8/3R4/4p3/4k3/8/7n/1K4B1/2Q5 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2002

8/3R4/4p3/4k3/8/7n/1K4B1/2Q5

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sg1
      • 2.Qg5#
    • 1...Sf2
      • 2.Qg5#
    • 1...Sg5
      • 2.Qxg5#
  • Tries
    • 1.Qh6?
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sg1
        • 2.Qg5#
      • 1...Sf2
        • 2.Qg5#
      • 1...Sf4
        • 2.Qg5#
      • 1...Kf5!
  • Keys
    • 1.Rf7!
      • threat
        • 2.Qc5#
      • 1...Kd4
        • 2.Qc3#
      • 1...Kd6
        • 2.Qc7#
      • 1...Sf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::QAR2(A)
    • S(a);N_GUARD::QAR2(A),XS(a)
  • Tries
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAR2(A),XS(a)
        • S(a);N_GUARD::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • R(D);
    • Threat
      • QAR2(A)
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
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