MESON Chess Problem Database

Problem Display
PID: 232948 (4B2K/6p1/Q3Nn1k/8/8/8/8/8 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2013

4B2K/6p1/Q3Nn1k/8/8/8/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qb5?
      • threat
        • 2.Qg5#
      • 1...Se4
        • 2.Qh5#
      • 1...Sh7
        • 2.Qh5#
      • 1...g5
        • 2.Qxg5#
      • 1...Sd5!
    • 1.Qa5?
      • threat
        • 2.Qg5#
      • 1...Se4
        • 2.Qh5#
      • 1...Sh7
        • 2.Qh5#
      • 1...g5
        • 2.Qxg5#
      • 1...Sd5!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qg6#
      • 1...Sxe8
        • 2.Qh7#
      • 1...g6
        • 2.Qxg6#
      • 1...Se4
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(a);N_GUARD::QAR1(A)
        • P(c);::QAB1(A),XP(c)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(a);N_GUARD::QAR1(A)
        • P(c);::QAB1(A),XP(c)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • S(a);N_GUARD,XB(C)::QAR1(A)
      • P(c);::QAR1(A),XP(c)
      • S(a);N_GUARD::QAR(A)
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