MESON Chess Problem Database

Problem Display
PID: 216180 (6Q1/6R1/8/7K/5p2/7k/7n/8 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Land og Folk, 1979

6Q1/6R1/8/7K/5p2/7k/7n/8

#2

3 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Rg3#
  • Tries
    • 1.Rg1?
      • threat
        • 2.Qg2#
      • 1...f3
        • 2.Rg3#
        • 2.Qg3#
      • 1...Sg4!
  • Keys
    • 1.Rg2!
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf1
        • 2.Qg4#
      • 1...Sf3
        • 2.Qg4#
      • 1...f3
        • 2.Rg3#
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::R1(B)
  • Tries
    • Try
      • R(B);
      • Threat
        • QAB1(C)
      • Refutation
        • S(a);
  • Actual
    • R(B);
    • Vars
      • S(a);N_GUARD::QAB1(C),XS(a)
      • S(a);N_GUARD::QAB1(C)
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