MESON Chess Problem Database

Problem Display
PID: 200740 (8/5N1p/5Q1P/3r4/4k1K1/4p3/2N5/8 w - - 0 1)

Dukic, Milenko

Sachova skladba, 1988

8/5N1p/5Q1P/3r4/4k1K1/4p3/2N5/8

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qf5#
    • 1...Rd2
      • 2.Qf5#
    • 1...Rd3
      • 2.Qe5#
      • 2.Qf3#
      • 2.Qf5#
      • 2.Qe6#
    • 1...Rd4
      • 2.Qxd4#
      • 2.Qf5#
    • 1...Ra5
      • 2.Qd4#
    • 1...Rb5
      • 2.Qd4#
    • 1...Rc5
      • 2.Qd4#
    • 1...Rf5
      • 2.Qd4#
      • 2.Qxf5#
    • 1...Rh5
      • 2.Qd4#
    • 1...Rd6
      • 2.Qf5#
    • 1...Rd7
      • 2.Qf5#
    • 1...Rd8
      • 2.Qf5#
    • 1...e2
      • 2.Qf3#
  • Tries
    • 1.Sd6+?
      • 1...Rxd6
        • 2.Qf5#
      • 1...Kd3!
    • 1.Qe6+?
      • 1...Re5
        • 2.Qc4#
      • 1...Kd3!
    • 1.Qg6+?
      • 1...Rf5
        • 2.Qxf5#
      • 1...hxg6!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qf4#
      • 1...Rg5+
        • 2.Sxg5#
      • 1...Rf5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • R(c);N_GUARD::QAB1(C)
    • R(c);N_GUARD::QAR1(C)
    • P(a);::QAB1(C)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • R(c);XS(E)::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • R(c);OGATE,P_SPINR(c)::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(C),XR(c)
      • Refutation
        • P(d);XQ(C)
  • Actual
    • S(A);
    • Threat
      • QAR1(C)
    • Vars
      • R(c);CHECK,N_GUARD::S(E),XR(c)
      • R(c);N_GUARD::S(E)
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