MESON Chess Problem Database

Problem Display
PID: 155864 (8/4K3/8/8/5kB1/5P2/7R/7Q w - - 0 1)

Murashev, Pavel Aleksandrovich

1st Prize, Amirov MT, 2009

8/4K3/8/8/5kB1/5P2/7R/7Q

#2

5 + 1

23 Die Schwalbe 2015
5454 Near Snap 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Rd2?
      • 1...Ke3
        • 2.Qh6#
      • 1...Kg3
        • 2.Qh2#
      • 1...Ke5
        • 2.Qh2#
      • 1...Kg5!
    • 1.Re2?
      • 1...Kg3
        • 2.Qh2#
      • 1...Kg5!
    • 1.Rh5?
      • 1...Kg3
        • 2.Qh2#
      • 1...Ke3!
    • 1.Qa1?
      • 1...Kg3
        • 2.Qe5#
      • 1...Kg5
        • 2.Qf6#
      • 1...Ke3!
    • 1.Qc1+?
      • 1...Kg3
        • 2.Qc7#
      • 1...Ke5!
    • 1.Qd1?
      • 1...Ke3
        • 2.Qd2#
      • 1...Kg3
        • 2.Qd6#
      • 1...Ke5
        • 2.Qd6#
      • 1...Kg5!
  • Keys
    • 1.Qb1!
      • 1...Ke3
        • 2.Qe4#
      • 1...Kg3
        • 2.Qb8#
      • 1...Ke5
        • 2.Qe4#
      • 1...Kg5
        • 2.Qf5#

Anticipated by 138102(1981)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAB(A)
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