MESON Chess Problem Database

Problem Display
PID: 109067 (5Q2/7k/8/5q1p/3n1N2/5b2/4p3/1B2n1K1 w - - 0 1)

Nejedlo, Vaclav

Ruch, 1948

5Q2/7k/8/5q1p/3n1N2/5b2/4p3/1B2n1K1

#2

4 + 7

6490 yacpdb 2009
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qg6+
      • 2.Bxg6#
    • 1...Sb3
      • 2.Bxf5#
    • 1...Sb5
      • 2.Bxf5#
    • 1...Sc6
      • 2.Bxf5#
    • 1...Se6
      • 2.Bxf5#
  • Keys
    • 1.Se6!
      • threat
        • 2.Qg7#
      • 1...Qg6+
        • 2.Sg5#
      • 1...Kg6
        • 2.Qg7#
      • 1...Sxe6
        • 2.Bxf5#

Anticipated by 47559(1933)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(e);CHECK,OGATE::B(A),XQ(e)
    • S(d);N_GUARD::B(A),XQ(e)
  • Actual
    • S(C);
    • Threat
      • QAR1(D)
    • Vars
      • Q(e);CHECK::S(C)
      • K(g);S_FLIGHT::QAR1(D)
      • S(d);N_GUARD,XS(C)::B(A),XQ(e)
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