MESON Chess Problem Database

Problem Display
PID: 264445 (8/1Q4R1/7p/5rbk/8/3p3K/8/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Saks, Oleg Pavlovich

The Problemist, 1992

8/1Q4R1/7p/5rbk/8/3p3K/8/8

#2

3 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3+
      • 2.Qxf3#
    • 1...Ra5
      • 2.Qf3#
      • 2.Qf7#
    • 1...Rb5
      • 2.Qf3#
      • 2.Qf7#
    • 1...Rc5
      • 2.Qf3#
      • 2.Qf7#
    • 1...Rd5
      • 2.Qf7#
    • 1...Re5
      • 2.Qf3#
      • 2.Qf7#
    • 1...Rf7
      • 2.Qxf7#
    • 1...Bf4
      • 2.Qf3#
    • 1...Bf6
      • 2.Qf7#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Qg4#
      • 1...Rf3+
        • 2.Qxf3#
      • 1...Rf4!
    • 1.Qc6?
      • threat
        • 2.Qg6#
      • 1...Rf3+
        • 2.Qxf3#
      • 1...Bf6
        • 2.Qe8#
      • 1...Rf6!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qg4#
      • 1...Rf3+
        • 2.Qxf3#
      • 1...Rf4
        • 2.Qg6#
      • 1...Bf4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(b);CHECK,N_GUARD::QAB(B),XR(b)
    • R(b);N_GUARD::QAB(B)
    • R(b);N_GUARD::QAB(B),XR(b)
    • B(c);S_CUTR(b)::QAB(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • R(b);CHECK,N_GUARD::QAB(B),XR(b)
      • Refutation
        • R(b);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • R(b);CHECK,N_GUARD::QAB(B),XR(b)
        • B(c);S_CUTR(b)::QAB(B)
      • Refutation
        • R(b);
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • R(b);CHECK,N_GUARD::QAB(B),XR(b)
      • R(b);OGATE::QAB1(B)
      • B(c);S_CUTR(b)::QAB(B)
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