MESON Chess Problem Database

Problem Display
PID: 262769 (7Q/8/4k3/1B5K/8/B7/8/8 w - - 0 1)

Kamensky, Viacheslav Ivanovich

Szachy, 1968

7Q/8/4k3/1B5K/8/B7/8/8

#2

4 + 1

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kf7
      • 2.Bc4#
  • Tries
    • 1.Kg5?
      • 1...Kf7
        • 2.Bc4#
      • 1...Kd5!
    • 1.Bd6?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Kf7
        • 2.Bc4#
      • 1...Kxd6!
    • 1.Bc6?
      • 1...Kf7
        • 2.Bd5#
      • 1...Kf5!
    • 1.Qd4?
      • 1...Kf5
        • 2.Bd7#
      • 1...Kf7!
    • 1.Qe5+?
      • 1...Kf7
        • 2.Bc4#
      • 1...Kxe5!
  • Keys
    • 1.Bb2!
      • 1...Kd5
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Ke7
        • 2.Qf6#
      • 1...Kf7
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::B(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(D)
        • K(a);N_GUARD,S_FLIGHT::B(B)
      • Refutation
        • K(a);P-FLIGHT,XB(A)
    • Try
      • B(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
  • Actual
    • B(A);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAR1(D)
      • K(a);N_GUARD,P-FLIGHT::QAB1(D)
      • K(a);N_GUARD,S_FLIGHT::QAB1(D)
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