MESON Chess Problem Database

Problem Display
PID: 216569 (8/8/1K6/8/2kp4/2B5/2R1P3/7Q w - - 0 1)

Koch, Jurgen

Deutsche Schachzeitung, 1982

8/8/1K6/8/2kp4/2B5/2R1P3/7Q

#2

5 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qa8?
      • threat
        • 2.Qa2#
        • 2.Qg8#
      • 1...Kb3
        • 2.Qa2#
      • 1...dxc3!
  • Keys
    • 1.Rb2!
      • threat
        • 2.Qc6#
      • 1...Kxc3
        • 2.Qc1#
      • 1...dxc3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(b);P_SPINP(b),XB(D)
  • Actual
    • R(B);
    • Threat
      • QAR2(A)
    • Vars
      • K(a);OGATEB,P-FLIGHT,XB(D)::QAR2(A)
      • P(b);OGATEB,SBLOCK,XB(D)::QAR2(A)
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