MESON Chess Problem Database

Problem Display
PID: 232942 (5Q2/5R2/5p2/5N2/5k2/5P2/5K2/8 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2011

5Q2/5R2/5p2/5N2/5k2/5P2/5K2/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qb4+?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kg5
        • 2.Qg4#
      • 1...Kxf5!
    • 1.Qd6+?
      • 1...Kxf5
        • 2.Qxf6#
      • 1...Kg5!
    • 1.Qh6+?
      • 1...Kxf5
        • 2.Qxf6#
      • 1...Ke5!
    • 1.Qe7?
      • 1...Kxf5
        • 2.Qxf6#
      • 1...Kg5!
    • 1.Qg7?
      • 1...Kxf5
        • 2.Qxf6#
      • 1...Ke5!
  • Keys
    • 1.Rxf6!
      • 1...Ke5
        • 2.Qd6#
      • 1...Kg5
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
        • K(a);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b),XS(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,P_SPINP(b),XS(C)::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,P_SPINP(b),XS(C)::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);OGATEB,P-FLIGHT,P_SPINP(b),XS(C)::QAR1(E),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);OGATEB,P-FLIGHT,P_SPINP(b),XS(C)::QAR1(E),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • R(D);XP(b)
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
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