MESON Chess Problem Database

Problem Display
PID: 19277 (7b/2Q5/8/3k1K2/r7/8/1BP1N3/8 w - - 0 1)

Krizhanivsky, Vasil Viktorovich

Buletin Problemistic, 1989

7b/2Q5/8/3k1K2/r7/8/1BP1N3/8

#2

5 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sf4#
      • 2.c4#
    • 1...Ra2
      • 2.Sf4#
      • 2.c4#
    • 1...Ra3
      • 2.Sf4#
      • 2.c4#
    • 1...Rd4
      • 2.Sc3#
    • 1...Rf4+
      • 2.Sxf4#
    • 1...Ra5
      • 2.Sf4#
      • 2.c4#
    • 1...Ra6
      • 2.Sf4#
      • 2.c4#
    • 1...Ra7
      • 2.Sf4#
      • 2.c4#
    • 1...Ra8
      • 2.Sf4#
      • 2.c4#
    • 1...Bd4
      • 2.Sf4#
  • Tries
    • 1.Be5?
      • threat
        • 2.Sc3#
      • 1...Rf4+
        • 2.Sxf4#
      • 1...Ra3
        • 2.Sf4#
        • 2.c4#
      • 1...Rc4
        • 2.Qd6#
      • 1...Bxe5!
    • 1.Bxh8?
      • threat
        • 2.Sc3#
      • 1...Rf4+
        • 2.Sxf4#
      • 1...Ra3
        • 2.Sf4#
        • 2.c4#
      • 1...Rc4!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qc5#
      • 1...Rxd4
        • 2.Sc3#
      • 1...Bxd4
        • 2.Sf4#
      • 1...Rc4
        • 2.Qd7#
      • 1...Ra5
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK,S_CUTB(c)::S(C)
    • R(a);CHECK,N_GUARD::S(C),XR(a)
    • B(c);S_CUTR(a)::S(C)
  • Tries
    • Try
      • B(A);
      • Threat
        • S(C)
      • Vars
        • R(a);CHECK,N_GUARD::S(C),XR(a)
        • R(a);SBLOCK::QAR1(E)
      • Refutation
        • B(c);XB(A)
    • Try
      • B(A);XB(c)
      • Threat
        • S(C)
      • Vars
        • R(a);CHECK,N_GUARD::S(C),XR(a)
      • Refutation
        • R(a);
  • Actual
    • B(A);
    • Threat
      • QAR1(E)
    • Vars
      • R(a);SBLOCK,XB(A)::S(C)
      • B(c);SBLOCK,XB(A)::S(C)
      • R(a);SBLOCK::QAR2(E)
      • R(a);N_GUARD::P(B)
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