MESON Chess Problem Database

Problem Display
PID: 164178 (Q2K1B1n/8/3P1Pp1/4k3/1b1NN1P1/4PR2/8/8 w - - 0 1)

Dubina, A

Sachmatija, 2006

Q2K1B1n/8/3P1Pp1/4k3/1b1NN1P1/4PR2/8/8

#2

10 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6
      • 2.Bxd6#
    • 1...g5
      • 2.Rf5#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Sd3#
        • 2.Qe4#
      • 1...Ba5+
        • 2.Qxa5#
      • 1...Sf7+!
    • 1.Sg3?
      • threat
        • 2.Qe4#
      • 1...Ba5+
        • 2.Qxa5#
      • 1...Sf7+!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qe4#
      • 1...Ba5+
        • 2.Qxa5#
      • 1...Sf7+
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);OGATE,XP(F)::B(J),XB(a)
    • P(c);N_GUARD::R1(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);CHECK,N_GUARD::QAR(H),XB(a)
      • Refutation
        • S(d);CHECK
    • Try
      • S(D);
      • Threat
        • QAR1(H)
      • Vars
        • B(a);CHECK,N_GUARD::QAR(H),XB(a)
      • Refutation
        • S(d);CHECK
  • Actual
    • S(D);
    • Threat
      • QAR1(H)
    • Vars
      • B(a);CHECK,N_GUARD::QAR(H),XB(a)
      • S(d);CHECK,N_GUARD::S(D),XS(d)
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