MESON Chess Problem Database

Problem Display
PID: 87694 (k7/8/1Q6/8/3K4/8/5pR1/5Bq1 w - - 0 1)

Nesic, Milivoj S

Buletin Problemistic Miniature Ty., 1987

k7/8/1Q6/8/3K4/8/5pR1/5Bq1

#2

4 + 3

6490 yacpdb 2009
145 StrateGems 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf1
      • 2.Rg8#
    • 1...Qh1
      • 2.Rg8#
    • 1...Qxg2
      • 2.Bxg2#
  • Tries
    • 1.Kc3?
      • 1...Qxf1
        • 2.Rg8#
      • 1...Qxg2
        • 2.Bxg2#
      • 1...Qh1
        • 2.Rg8#
      • 1...Qh2!
    • 1.Ke3?
      • 1...Qxf1
        • 2.Rg8#
      • 1...Qxg2
        • 2.Bxg2#
      • 1...Qh1
        • 2.Rg8#
      • 1...Qh2!
    • 1.Kc5?
      • 1...Qxf1
        • 2.Rg8#
      • 1...Qxg2
        • 2.Bxg2#
      • 1...Qh1
        • 2.Rg8#
      • 1...Qh2!
    • 1.Ke5?
      • 1...Qxf1
        • 2.Rg8#
      • 1...Qxg2
        • 2.Bxg2#
      • 1...Qh1
        • 2.Rg8#
      • 1...Qh2+!
    • 1.Rg3?
      • threat
        • 2.Ra3#
      • 1...Qxf1
        • 2.Rg8#
      • 1...Qxg3!
  • Keys
    • 1.Qc7!
      • 1...Qxf1
        • 2.Rg8#
      • 1...Qxg2
        • 2.Bxg2#
      • 1...Qh2
        • 2.Rg8#
      • 1...Qh1
        • 2.Rg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_GUARD,XB(A)::R(B)
    • Q(a);N_GUARD::R(B)
    • Q(a);OGATE,XR(B)::B(A),XQ(a)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • Q(a);N_GUARD,XB(A)::R(B)
        • Q(a);OGATE,XR(B)::B(A),XQ(a)
        • Q(a);N_GUARD::R(B)
      • Refutation
        • Q(a);
    • Try
      • K(C);S_FLIGHT
      • Vars
        • Q(a);N_GUARD,XB(A)::R(B)
        • Q(a);OGATE,XR(B)::B(A),XQ(a)
        • Q(a);N_GUARD::R(B)
      • Refutation
        • Q(a);
    • Try
      • K(C);S_FLIGHT
      • Vars
        • Q(a);N_GUARD,XB(A)::R(B)
        • Q(a);OGATE,XR(B)::B(A),XQ(a)
        • Q(a);N_GUARD::R(B)
      • Refutation
        • Q(a);
    • Try
      • K(C);S_FLIGHT
      • Vars
        • Q(a);N_GUARD,XB(A)::R(B)
        • Q(a);OGATE,XR(B)::B(A),XQ(a)
        • Q(a);N_GUARD::R(B)
      • Refutation
        • Q(a);CHECK
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • Q(a);N_GUARD,XB(A)::R(B)
      • Refutation
        • Q(a);XR(B)
  • Actual
    • Q(D);
    • Vars
      • Q(a);N_GUARD,XB(A)::R(B)
      • Q(a);OGATE,XR(B)::B(A),XQ(a)
      • Q(a);N_GUARD::R(B)
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