MESON Chess Problem Database

Problem Display
PID: 15357 (8/8/6N1/2B5/6kp/1B2Q3/8/7K w - - 0 1)

Petrusenko, Alexey Matveevich

1/2 HM., Vecherni Kharkov, 1982

8/8/6N1/2B5/6kp/1B2Q3/8/7K

#2

5 + 2

3296 Shakhmatny zadachi miniaturi 1987

SOLUTION

  • SOUND
  • Tries
    • 1.Se5+?
      • 1...Kh5
        • 2.Bd1#
        • 2.Bf7#
      • 1...Kf5!
    • 1.Se7?
      • threat
        • 2.Bd1#
      • 1...Kh5
        • 2.Bd1#
      • 1...h3!
    • 1.Bf7?
      • 1...Kf5
        • 2.Qf4#
      • 1...Kh5
        • 2.Se5#
      • 1...h3!
    • 1.Be7?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Qg5#
      • 1...h3!
    • 1.Qf4+?
      • 1...Kh3
        • 2.Be6#
        • 2.Qf3#
        • 2.Qxh4#
      • 1...Kh5!
    • 1.Qg5+?
      • 1...Kf3
        • 2.Qg2#
      • 1...Kh3
        • 2.Sf4#
        • 2.Be6#
        • 2.Qxh4#
        • 2.Qg2#
      • 1...Kxg5!
  • Keys
    • 1.Qe5!
      • 1...Kf3
        • 2.Bd1#
      • 1...Kh3
        • 2.Be6#
      • 1...h3
        • 2.Bd1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • B(B)
      • Vars
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • P(b);
    • Try
      • B(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • K(a);S_FLIGHT::B(B)+S(E)
      • Refutation
        • P(b);
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT::B(B)
      • P(b);SBLOCK::B(B)
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