MESON Chess Problem Database

Problem Display
PID: 77218 (1nK2B2/2p1P2N/r6N/Qpqk1p1R/r4R2/3p1n2/b2P4/7B w - - 0 1)

Holladay, Edgar Dinwiddie

Comm., The Problemist, 1967

1nK2B2/2p1P2N/r6N/Qpqk1p1R/r4R2/3p1n2/b2P4/7B

#2

10 + 11

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Rhxf5+?
      • 1...Kc6
        • 2.Qxc7#
      • 1...Kd6
        • 2.e8Q#
      • 1...Ke6!
  • Keys
    • 1.Rfxf5+!
      • 1...Kc4
        • 2.Qc3#
      • 1...Kd4
        • 2.Rf4#
      • 1...Ke4
        • 2.Rh4#
      • 1...Kc6
        • 2.Qxc7#
      • 1...Kd6
        • 2.e8Q#
      • 1...Ke6
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK,XP(h)
      • Vars
        • K(g);S_FLIGHT::QAR1(D),XP(j)
        • K(g);N_SPINS(c),P-FLIGHT::P=Q
      • Refutation
        • K(g);N_SPINS(c),S_FLIGHT
  • Actual
    • R(C);CHECK,XP(h)
    • Vars
      • K(g);N_SPINS(c),S_FLIGHT::QAR1(D)
      • K(g);N_SPINS(c),P-FLIGHT::R(C)
      • K(g);S_FLIGHT::R(E)
      • K(g);S_FLIGHT::QAR1(D),XP(j)
      • K(g);N_SPINS(c),P-FLIGHT::P=Q
      • K(g);N_SPINS(c),S_FLIGHT::R1(C)
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