MESON Chess Problem Database

Problem Display
PID: 159810 (8/1p6/qp6/7B/R2P1Q2/2BR3p/1N1PP1pK/4k1rb w - - 0 1)

Kovacevic, Marjan

Schach-Echo, 1979

8/1p6/qp6/7B/R2P1Q2/2BR3p/1N1PP1pK/4k1rb

#2

10 + 8

45 Schach 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Ra1#
    • 1...Qb5
      • 2.Ra1#
  • Tries
    • 1.Kxg1?
      • threat
        • 2.Qg3#
        • 2.Qf2#
        • 2.Qh4#
      • 1...Qxd3
        • 2.Qf2#
      • 1...h2+!
    • 1.Re3?
      • threat
        • 2.d3#
      • 1...Qd3
        • 2.exd3#
      • 1...Qc4
        • 2.Ra1#
      • 1...Qa5!
    • 1.Qe3?
      • threat
        • 2.Qxg1#
      • 1...Kf1
        • 2.Qxg1#
      • 1...Rf1!
  • Keys
    • 1.e4!
      • 1...Qxd3
        • 2.Sxd3#
      • 1...Qxa4
        • 2.Re3#
      • 1...Rf1
        • 2.Qe3#
      • 1...Qc4
        • 2.Ra1#
      • 1...Qb5
        • 2.Ra1#
      • 1...Qa5
        • 2.Re3#
      • 1...Qa7
        • 2.Re3#
      • 1...Qa8
        • 2.Re3#
      • 1...b5
        • 2.Re3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • Q(f);N_GUARD::R(G)
  • Tries
    • Try
      • K(D);S_FLIGHT,XR(b)
      • Threat
        • DUALS(3)
      • Vars
        • Q(f);XR(F)::QAB1(I)
      • Refutation
        • P(e);CHECK
    • Try
      • R(F);
      • Threat
        • B(E)+P(B)
      • Vars
        • Q(f);OGATE::R(F)+P(C),XQ(f)
        • Q(f);N_GUARD::R(G)
      • Refutation
        • Q(f);
    • Try
      • Q(I);
      • Threat
        • QAR2(I),XR(b)
      • Vars
        • K(a);P-FLIGHT::QAR1(I),XR(b)
      • Refutation
        • R(b);
  • Actual
    • P(C);
    • Vars
      • Q(f);XR(F)::S(A),XQ(f)
      • Q(f);N_GUARD,XR(G)::R(F)
      • R(b);SBLOCK::QAR2(I)
      • Q(f);N_GUARD::R(G)
      • Q(f);N_GUARD::R(F)
      • P(g);S_CUTQ(f)::R(F)
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