MESON Chess Problem Database

Problem Display
PID: 19276 (4B1Q1/2K3B1/p7/8/1k6/5N2/8/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

HM., Bulletin of the Central Chess Club of USSR, 1972

4B1Q1/2K3B1/p7/8/1k6/5N2/8/8

#2

5 + 2

3296 Shakhmatny zadachi miniaturi 1987
6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Bc3#
    • 1...Kc5
      • 2.Bf8#
  • Tries
    • 1.Se1?
      • 1...Ka3
        • 2.Sc2#
      • 1...Ka5
        • 2.Bc3#
      • 1...Kc5
        • 2.Sd3#
      • 1...a5!
    • 1.Bb2?
      • 1...Ka5
        • 2.Bc3#
      • 1...Kc5
        • 2.Ba3#
      • 1...a5!
    • 1.Bf8+?
      • 1...Ka5
        • 2.Qa2#
        • 2.Qd5#
        • 2.Qg5#
      • 1...Kc3!
    • 1.Qa2?
      • 1...Kc5
        • 2.Bf8#
      • 1...a5!
    • 1.Qb3+?
      • 1...Ka5
        • 2.Bc3#
        • 2.Qa4#
        • 2.Qa3#
        • 2.Qc3#
        • 2.Qb6#
      • 1...Kc5
        • 2.Bd4#
        • 2.Bf8#
      • 1...Kxb3!
    • 1.Qc4+?
      • 1...Ka3
        • 2.Qa4#
      • 1...Ka5
        • 2.Bc3#
        • 2.Qc3#
        • 2.Qa4#
        • 2.Qc5#
      • 1...Kxc4!
  • Keys
    • 1.Sd2!
      • 1...Ka3
        • 2.Qb3#
      • 1...Ka5
        • 2.Bc3#
      • 1...Kc5
        • 2.Qc4#
      • 1...a5
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(C)
  • Tries
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::S(A)
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • P(b);
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • P(b);
    • Try
      • B(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
  • Actual
    • S(A);
    • Vars
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);S_FLIGHT::B(C)
      • P(b);SBLOCK::QAB(E)
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