MESON Chess Problem Database

Problem Display
PID: 47868 (7Q/7b/8/8/4pp2/5k2/6R1/5K2 w - - 0 1)

Zarubin, Z

Uralski Problemist, 2003

7Q/7b/8/8/4pp2/5k2/6R1/5K2

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qc3#
    • 1...Bg6
      • 2.Qh3#
    • 1...Bg8
      • 2.Qh3#
  • Tries
    • 1.Qb2?
      • threat
        • 2.Qe2#
        • 2.Qf2#
      • 1...Ke3
        • 2.Qc3#
      • 1...e3!
    • 1.Qxh7?
      • threat
        • 2.Qh3#
      • 1...e3
        • 2.Qb7#
      • 1...Ke3!
  • Keys
    • 1.Rg6!
      • 1...Ke3
        • 2.Qc3#
      • 1...Bxg6
        • 2.Qh3#
      • 1...Bg8
        • 2.Qh3#
      • 1...e3
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(C)
    • B(d);OGATE::QAR2(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);XB(d)
      • Threat
        • QAR2(C)
      • Vars
        • P(b);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • B(d);OGATE,XR(B)::QAR2(C)
      • B(d);OGATE::QAR2(C)
      • P(b);OGATEB,SBLOCK::QAB(C)
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