MESON Chess Problem Database

Problem Display
PID: 38878 (8/1P6/1NQ5/k7/8/8/K7/2B1b3 w - - 0 1)

Markovtsy, Vassyl Yuriovich

Probleemblad, 1996

8/1P6/1NQ5/k7/8/8/K7/2B1b3

#2

5 + 2

2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2009
145 StrateGems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Sc4#
  • Tries
    • 1.Bd2+?
      • 1...Ka6
        • 2.Sc8#
      • 1...Bxd2!
    • 1.b8Q?
      • threat
        • 2.Sc4#
        • 2.Qa4#
      • 1...Ka6
        • 2.Sc4#
        • 2.Qba8#
      • 1...Kb4!
    • 1.b8S?
      • threat
        • 2.Qc5#
      • 1...Bf2
        • 2.Bd2#
      • 1...Bb4
        • 2.Sc4#
      • 1...Kb4!
    • 1.b8R?
      • threat
        • 2.Sc4#
        • 2.Qa4#
      • 1...Ka6
        • 2.Ra8#
      • 1...Kb4!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qa4#
      • 1...Kb4
        • 2.Qc5#
      • 1...Ka6
        • 2.Sc4#

Anticipated by 114938(1898), 10728(1967)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::S(C)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR(D)+S(C)
      • Refutation
        • B(a);XB(A)
    • Try
      • P(E);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(E);
      • Threat
        • QAR2(D)
      • Vars
        • B(a);N_GUARD::B(A)
        • B(a);SBLOCK::S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::R(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(A);
    • Threat
      • QAR1(D)
    • Vars
      • K(b);S_FLIGHT::QAB1(D)
      • K(b);P-FLIGHT::QAR(D)+S(C)
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