MESON Chess Problem Database

Problem Display
PID: 175083 (2K5/8/7Q/5k2/3Pp3/8/3N2P1/3B2q1 w - - 0 1)

Stross, Ludvik

Besedy lidu, 1902

2K5/8/7Q/5k2/3Pp3/8/3N2P1/3B2q1

#2

6 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qf2
      • 2.g4#
    • 1...Qh2
      • 2.g4#
    • 1...Qe3
      • 2.g4#
    • 1...Qe1
      • 2.g4#
    • 1...Qf1
      • 2.g4#
    • 1...Qh1
      • 2.g4#
  • Tries
    • 1.Sf1?
      • threat
        • 2.Sg3#
      • 1...Qxf1
        • 2.g4#
      • 1...Qxg2
        • 2.Se3#
      • 1...Qf2
        • 2.g4#
      • 1...Qh2
        • 2.Se3#
        • 2.g4#
      • 1...Qe3
        • 2.Sxe3#
        • 2.g4#
      • 1...Qxd4!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sd6#
      • 1...Qxd4
        • 2.g4#
      • 1...Qxd1
        • 2.Se3#
      • 1...Qh2
        • 2.Se3#
        • 2.g4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD::P(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • Q(a);N_GUARD,XS(B)::P(C)
        • Q(a);N_GUARD,XP(C)::S(B)
        • Q(a);N_GUARD::P(C)
      • Refutation
        • Q(a);XP(D)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • Q(a);N_GUARD,XP(D)::P(C)
      • Q(a);N_GUARD,XB(A)::S(B)
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