MESON Chess Problem Database

Problem Display
PID: 87641 (7R/KQ6/2Pk4/7N/8/8/B7/8 w - - 0 1)

Matrenin, Mikhail Vasilevich

Uralski Problemist, 2000

7R/KQ6/2Pk4/7N/8/8/B7/8

#2

6 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rh6+?
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5!
    • 1.Rd8+?
      • 1...Kc5
        • 2.Rd5#
        • 2.Qb6#
      • 1...Ke5!
    • 1.Qb5?
      • 1...Ke7
        • 2.Qb4#
        • 2.Qc5#
        • 2.Qe5#
      • 1...Kc7!
    • 1.Qb6?
      • 1...Ke7
        • 2.Qc5#
        • 2.Qc7#
        • 2.Qd8#
        • 2.Qb4#
      • 1...Ke5!
    • 1.Qd7+?
      • 1...Ke5
        • 2.Re8#
        • 2.Qd5#
      • 1...Kc5!
  • Keys
    • 1.c7!
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Qd5#
      • 1...Kd7
        • 2.c8S#
      • 1...Ke7
        • 2.c8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(F);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);P-FLIGHT::P=S
      • K(a);S_FLIGHT::P=S
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