MESON Chess Problem Database

Problem Display
PID: 141537 (2N5/2r5/4B3/q7/3k4/7r/1N4R1/1n3QKn w - - 0 1)

Muller, Dieter

Probleemblad, 1977

2N5/2r5/4B3/q7/3k4/7r/1N4R1/1n3QKn

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qc4#
  • Tries
    • 1.Qf4+?
      • 1...Kc5
        • 2.Qc4#
      • 1...Kc3!
  • Keys
    • 1.Rg4+!
      • 1...Kc3
        • 2.Qc1#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc5
        • 2.Qc4#
      • 1...Ke5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::QAR1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(D);CHECK
    • Vars
      • K(d);S_FLIGHT::QAR2(A)
      • K(d);S_FLIGHT::QAR1(A)
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