MESON Chess Problem Database

Problem Display
PID: 10190 (8/2RPK3/3Pp3/8/3k4/5Q2/8/8 w - - 0 1)

Petkov, Petko Andonov

St. Tribuna, 1962

8/2RPK3/3Pp3/8/3k4/5Q2/8/8

#2

5 + 2

3840 Petkov Selected Compositions 2000

SOLUTION

  • SOUND
  • Tries
    • 1.Rc3?
      • 1...e5
        • 2.Qd3#
      • 1...Ke5!
    • 1.Rc4+?
      • 1...Ke5
        • 2.Qe4#
        • 2.Qh5#
      • 1...Kxc4!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Rc5#
      • 1...Kxe3!
    • 1.d8Q?
      • 1...Ke5
        • 2.Qh8#
      • 1...e5!
  • Keys
    • 1.d8S!
      • 1...Ke5
        • 2.Sc6#
      • 1...e5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Vars
        • P(b);SBLOCK::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XR(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • P(D);
      • Vars
        • K(a);S_FLIGHT::QAB(D)
      • Refutation
        • P(b);
  • Actual
    • P(D);
    • Vars
      • K(a);S_FLIGHT::S(D)
      • P(b);SBLOCK::S(D)
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