MESON Chess Problem Database

Problem Display
PID: 274081 (8/8/8/8/K2nQ3/8/Nb1k2N1/8 w - - 0 1)

Zimmer, Eligiusz

StrateGems, 2001

8/8/8/8/K2nQ3/8/Nb1k2N1/8

#2

4 + 3

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Kd1
      • 2.Qd3#
  • Tries
    • 1.Qe1+?
      • 1...Kc2
        • 2.Sb4#
      • 1...Kd3!
    • 1.Qe3+?
      • 1...Kd1
        • 2.Qd3#
      • 1...Kc2!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qe1#
      • 1...Kc1
        • 2.Qe1#
      • 1...Kd1
        • 2.Qe1#
      • 1...Kc3
        • 2.Qd3#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Se2
        • 2.Qc2#
      • 1...Sf3
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,P-FLIGHT::QAR2(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);P-FLIGHT::S(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR2(D)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • QAB1(D)
    • Vars
      • K(b);S_FLIGHT::QAR2(D)
      • K(b);P-FLIGHT::QAR1(D)
      • K(b);N_GUARD,S_FLIGHT::QAR1(D)
      • S(c);N_GUARD::QAR1(D),XS(c)
      • S(c);N_GUARD,SBLOCK::QAR1(D)
      • S(c);N_GUARD::QAR1(D)
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