MESON Chess Problem Database

Problem Display
PID: 7679 (4Q3/8/8/4pN2/3Nk1B1/8/8/K7 w - - 0 1)

Rothwell, Stephen

Der Tagesspiegel (Berlin), 1992

4Q3/8/8/4pN2/3Nk1B1/8/8/K7

#2

5 + 2

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qc6#
  • Tries
    • 1.Be2?
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf4!
    • 1.Qc6+?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kf4!
  • Keys
    • 1.Qa4!
      • 1...Kd3
        • 2.Qc2#
      • 1...Kf4
        • 2.Se6#
      • 1...Kd5
        • 2.Qc6#
      • 1...exd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),S_FLIGHT::QAB1(E)
  • Tries
    • Try
      • B(C);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(E);CHECK,N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(E);N_PINP(b)
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);P-FLIGHT::QAR(E)+S(B),DCHECK
      • P(b);OGATE,P_SPINP(b),XS(B)::QAR1(E),XP(b)
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