MESON Chess Problem Database

Problem Display
PID: 136490 (8/K7/Np6/1k6/8/1n6/R1Q5/8 w - - 0 1)

Subotic, Miroslav

The Problemist, 2010

8/K7/Np6/1k6/8/1n6/R1Q5/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qa4#
    • 1...Sc1
      • 2.Qa4#
    • 1...Sd2
      • 2.Qa4#
    • 1...Sd4
      • 2.Qa4#
    • 1...Sa5
      • 2.Qa4#
  • Tries
    • 1.Ra3?
      • 1...Sa1
        • 2.Qa4#
      • 1...Sc1
        • 2.Qa4#
      • 1...Sd2
        • 2.Qa4#
      • 1...Sd4
        • 2.Qa4#
      • 1...Sa5
        • 2.Qa4#
      • 1...Sc5!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qa4#
      • 1...Sd4
        • 2.Qd5#
      • 1...Sc5
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • S(a);OGATE::QAB1(B)
  • Tries
    • Try
      • R(A);
      • Vars
        • S(a);OGATE::QAB1(B)
      • Refutation
        • S(a);
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • S(a);N_GUARD::QAR2(B)
      • S(a);SBLOCK::S(C)
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