MESON Chess Problem Database

Problem Display
PID: 98494 (QR6/1p1p4/RP1P4/3kP3/1K4N1/8/2B5/8 w - - 0 1)

Petkov, Petko Andonov

Problemas, 1967

QR6/1p1p4/RP1P4/3kP3/1K4N1/8/2B5/8

#2

9 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Be4#
      • 2.Qxb7#
  • Tries
    • 1.Bf5?
      • 1...Kc6
        • 2.Be4#
        • 2.Qxb7#
      • 1...Kd4!
    • 1.Rxb7?
      • 1...Kc6
        • 2.Be4#
        • 2.Rba7#
        • 2.Rc7#
        • 2.Rb8#
      • 1...Ke6
        • 2.Qg8#
      • 1...Kd4!
    • 1.Re8?
      • 1...Kc6
        • 2.Be4#
      • 1...Kd4!
    • 1.Rf8?
      • 1...Kc6
        • 2.Be4#
      • 1...Ke6
        • 2.Bb3#
      • 1...Kd4!
    • 1.Rh8?
      • 1...Kc6
        • 2.Be4#
      • 1...Ke6
        • 2.Qg8#
      • 1...Kd4!
    • 1.Qxb7+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Ke6!
  • Keys
    • 1.Ra1!
      • 1...Kd4
        • 2.Rd1#
      • 1...Kc6
        • 2.Qxb7#
      • 1...Ke6
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • R(I);XP(b)
      • Vars
        • K(a);S_FLIGHT::QAB(H)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(I);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • R(I);
      • Vars
        • K(a);S_FLIGHT::B(A)
        • K(a);N_SPINP(b),S_FLIGHT::B(A)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • R(I);
      • Vars
        • K(a);S_FLIGHT::B(A)
        • K(a);N_SPINP(b),S_FLIGHT::QAB(H)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(H);CHECK,XP(b)
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(H)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(a);N_SPINP(b),P-FLIGHT::R(E)
      • K(a);S_FLIGHT::QAB1(H),XP(b)
      • K(a);N_SPINP(b),S_FLIGHT::QAB(H)
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