MESON Chess Problem Database

Problem Display
PID: 77216 (2BR4/3n4/2Q2r2/1K1Np1P1/4k3/3p1qR1/3n1b2/2B1r3 w - - 0 1)

Holladay, Edgar Dinwiddie

British Chess Magazine, 1967

2BR4/3n4/2Q2r2/1K1Np1P1/4k3/3p1qR1/3n1b2/2B1r3

#2

8 + 9

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Sxf6+?
      • 1...Ke3
        • 2.Qe4#
      • 1...Kd4
        • 2.Qc5#
      • 1...Kf4
        • 2.Qxf3#
      • 1...Kf5!
  • Keys
    • 1.Sc3+!
      • 1...Ke3
        • 2.Qe4#
      • 1...Kd4
        • 2.Qc5#
      • 1...Kf4
        • 2.Qxf3#
      • 1...Kf5
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK,XR(h)
      • Vars
        • K(f);P-FLIGHT,P_SPINQ(e),P_SPINS(b)::QAR1(F)
        • K(f);P-FLIGHT,P_SPINS(i)::QAB1(F)
        • K(f);OGATE,P-FLIGHT,P_SPINS(b)::QAR1(F),XQ(e)
      • Refutation
        • K(f);P_SPINS(i),S_FLIGHT
  • Actual
    • S(D);CHECK
    • Vars
      • K(f);P-FLIGHT,P_SPINQ(e),P_SPINS(b)::QAR1(F)
      • K(f);P-FLIGHT,P_SPINS(i)::QAB1(F)
      • K(f);OGATE,P-FLIGHT,P_SPINS(b)::QAR1(F),XQ(e)
      • K(f);P_SPINS(i),S_FLIGHT::QAR1(F),XR(h)
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