MESON Chess Problem Database

Problem Display
PID: 152921 (7Q/2B1p3/4k3/NR4K1/8/8/8/8 w - - 0 1)

Alekseev, Yuri Mikhailovich

Uralski Problemist, 2005

7Q/2B1p3/4k3/NR4K1/8/8/8/8

#2

5 + 2

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Sc6?
      • 1...Kf7
        • 2.Sd8#
      • 1...Kd7!
    • 1.Sb7?
      • 1...Kf7
        • 2.Sd8#
      • 1...Kd7!
    • 1.Rd5?
      • threat
        • 2.Qg8#
      • 1...Kxd5
        • 2.Qe5#
      • 1...Kf7!
    • 1.Re5+?
      • 1...Kd7
        • 2.Qd8#
      • 1...Kf7!
    • 1.Rb6+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kd7
        • 2.Qd8#
      • 1...Kf7!
  • Keys
    • 1.Rb8!
      • 1...Kd5
        • 2.Qe5#
      • 1...Kd7
        • 2.Qc8#
      • 1...Kf7
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • QAB(E)
      • Vars
        • K(a);S_FLIGHT,XR(B)::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);S_FLIGHT::QAB1(E)
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