MESON Chess Problem Database

Problem Display
PID: 245544 (8/8/7p/2Q2p1B/4k3/7K/8/5N2 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2011

8/8/7p/2Q2p1B/4k3/7K/8/5N2

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qe3#
  • Tries
    • 1.Kg2?
      • 1...Kf4
        • 2.Qe3#
      • 1...f4
        • 2.Bg6#
      • 1...Kd3!
    • 1.Be2?
      • 1...Kf4
        • 2.Qe3#
      • 1...f4
        • 2.Sd2#
      • 1...h5!
    • 1.Bf3+?
      • 1...Kxf3
        • 2.Qe3#
      • 1...Kf4
        • 2.Qe3#
      • 1...Kd3!
  • Keys
    • 1.Bf7!
      • threat
        • 2.Qe3#
      • 1...Kd3
        • 2.Qc4#
      • 1...Kf3
        • 2.Qe3#
      • 1...Kf4
        • 2.Qe3#
      • 1...f4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAB1(C)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
        • P(b);OGATEB,SBLOCK::B(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
        • P(b);SBLOCK::S(A)
      • Refutation
        • P(c);
    • Try
      • B(D);CHECK
      • Vars
        • K(a);S_FLIGHT,XB(D)::QAR1(C)
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(D);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);P-FLIGHT::QAB1(C)
      • P(b);SBLOCK::QAB1(C)
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