MESON Chess Problem Database

Problem Display
PID: 224207 (6K1/3p1R2/n2k1p2/3P1R2/4P3/1p6/8/n1Q5 w - - 0 1)

Popov, Georgy Aleksandrov

Suomen Shakki, 1957

6K1/3p1R2/n2k1p2/3P1R2/4P3/1p6/8/n1Q5

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qf4#
    • 1...Sc7
      • 2.Qa3#
  • Tries
    • 1.Kf8?
      • threat
        • 2.R7xf6#
      • 1...Sc5
        • 2.Qf4#
      • 1...Sc7
        • 2.Qa3#
      • 1...Sc2!
    • 1.Qc8?
      • threat
        • 2.Rxd7#
      • 1...Sc7
        • 2.Qf8#
      • 1...Sc5
        • 2.Qb8#
      • 1...Sb8!
  • Keys
    • 1.Qc3!
      • threat
        • 2.R5xf6#
      • 1...Sc5
        • 2.Qg3#
      • 1...Sc7
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::QAB(A)
    • S(c);N_GUARD,SBLOCK::QAB(A)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • R(E),XP(e)
      • Vars
        • S(c);SBLOCK::QAB(A)
        • S(c);N_GUARD,SBLOCK::QAB(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • R1(E),XP(f)
      • Vars
        • S(c);SBLOCK::QAB(A)
        • S(c);N_GUARD,SBLOCK::QAB(A)
      • Refutation
        • S(c);
  • Actual
    • Q(A);
    • Threat
      • R(D),XP(e)
    • Vars
      • S(c);SBLOCK::QAB(A)
      • S(c);N_GUARD,SBLOCK::QAB(A)
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