MESON Chess Problem Database

Problem Display
PID: 245540 (8/8/8/6Qn/1N1p4/5k1B/8/3K4 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2007

8/8/8/6Qn/1N1p4/5k1B/8/3K4

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bg2#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Bg2#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sg3
        • 2.Qf4#
      • 1...Ke4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qg2#
      • 1...Kf2
        • 2.Qg2#
      • 1...Ke4
        • 2.Qf5#
      • 1...Sg3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • B(B)
      • Vars
        • S(c);N_GUARD::QAR1(D),XS(c)
        • S(c);N_GUARD::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAB1(D)
    • Vars
      • K(a);P-FLIGHT::QAR1(D)
      • K(a);S_FLIGHT::QAB1(D)
      • S(c);N_GUARD::QAR1(D)
      • S(c);N_GUARD::QAR1(D),XS(c)
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