MESON Chess Problem Database

Problem Display
PID: 171407 (1K1N1N2/4k3/8/8/4P3/8/3B3Q/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Rochade Europa, 1995

1K1N1N2/4k3/8/8/4P3/8/3B3Q/8

#2

6 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Bg5+?
      • 1...Kxf8
        • 2.Qh8#
      • 1...Ke8!
    • 1.Qe5+?
      • 1...Kxd8
        • 2.Ba5#
        • 2.Bg5#
      • 1...Kxf8!
    • 1.Qh7+?
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Sd7#
      • 1...Kxd8
        • 2.Qd7#
      • 1...Kxf8
        • 2.Qf7#
      • 1...Ke8!
  • Keys
    • 1.Qh5!
      • 1...Kd6
        • 2.Bb4#
      • 1...Kf6
        • 2.Qg5#
      • 1...Kxd8
        • 2.Bg5#
      • 1...Kxf8
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(F)::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
        • K(a);S_FLIGHT::S(F)
        • K(a);OGATE,S_FLIGHT,XS(E)::QAR1(B)
        • K(a);S_FLIGHT,XS(F)::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::B(A)
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);S_FLIGHT,XS(E)::B(A)
      • K(a);S_FLIGHT,XS(F)::QAR1(B)
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