MESON Chess Problem Database

Problem Display
PID: 104993 (5b2/p7/1nK5/p7/k1N1Q3/p7/8/8 w - - 0 1)

Dukic, Milenko

Canadian Chess Chat, 1980

5b2/p7/1nK5/p7/k1N1Q3/p7/8/8

#2

3 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Qc2#
  • Tries
    • 1.Sd2+?
      • 1...Bb4
        • 2.Qc2#
      • 1...Sc4!
    • 1.Sd6+?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Kb3!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qb5#
      • 1...Bb4
        • 2.Qc2#
        • 2.Qd1#
      • 1...a6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(f);SBLOCK::QAB(B)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • B(f);P_SPINB(f),SBLOCK::QAB(B)
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • S(A);CHECK
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::QAR2(B),XS(d)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • P(e);N_GUARD::S(A),XS(d)
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