MESON Chess Problem Database

Problem Display
PID: 41808 (6r1/B7/8/8/8/K4QP1/4PRPp/5Bkr w - - 0 1)

de Jong, Leonard Nicholaas

De Problemist, 1929

6r1/B7/8/8/8/K4QP1/4PRPp/5Bkr

#2

8 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qe3?
      • threat
        • 2.Rf3#
        • 2.Rf4#
        • 2.Rf5#
        • 2.Rf6#
        • 2.Rf7#
        • 2.Rf8#
      • 1...Rxg3
        • 2.Rf3#
      • 1...Rf8
        • 2.Rf3#
        • 2.Rf4#
        • 2.Rf5#
        • 2.Rf6#
        • 2.Rf7#
        • 2.Rxf8#
      • 1...Re8!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Rf3#
        • 2.Rf4#
        • 2.Rf5#
        • 2.Rf6#
        • 2.Rf7#
      • 1...Rxg3+
        • 2.Rf3#
      • 1...Rg4
        • 2.Rf4#
      • 1...Rg5
        • 2.Rf5#
      • 1...Rg6
        • 2.Rf6#
      • 1...Rg7
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(6)
      • Vars
        • R(d);P_PINQ(F),XP(G)::QAB(F)+R(C)
      • Refutation
        • R(d);
  • Actual
    • Q(F);
    • Threat
      • DUALS(5)
    • Vars
      • R(d);CHECK,XP(G)::B(H)+R(C)
      • R(d);::B(H)+R(C)
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