MESON Chess Problem Database

Problem Display
PID: 245478 (4nB1Q/8/5p2/4k3/5N2/4K3/8/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2000

4nB1Q/8/5p2/4k3/5N2/4K3/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qh5#
  • Tries
    • 1.Be7?
      • 1...Kf5
        • 2.Qh5#
      • 1...Sd6
        • 2.Qxf6#
      • 1...Sc7
        • 2.Qxf6#
      • 1...Sg7!
    • 1.Qh7?
      • threat
        • 2.Qe4#
      • 1...f5
        • 2.Qe7#
      • 1...Sd6!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...Kf5
        • 2.Qh5#
      • 1...Sd6
        • 2.Qd5#
      • 1...Sc7
        • 2.Qe4#
      • 1...f5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),P-FLIGHT::QAR2(D)
  • Tries
    • Try
      • B(C);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR2(D)
        • S(c);N_GUARD::QAB1(D),XP(b)
      • Refutation
        • S(c);N_SPINP(b)
    • Try
      • Q(D);N_PINP(b)
      • Threat
        • QAR1(D)
      • Vars
        • P(b);SBLOCK::QAR2(D)
      • Refutation
        • S(c);
  • Actual
    • Q(D);N_PINP(b)
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::QAR2(D)
      • S(c);::QAR1(D)
      • P(b);SBLOCK::QAB(D)
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