MESON Chess Problem Database

Problem Display
PID: 156904 (8/5K2/3p1R2/1n2k3/8/3P4/8/6Q1 w - - 0 1)

Abdullayev, Elmar

Best Problems, 2015

8/5K2/3p1R2/1n2k3/8/3P4/8/6Q1

#2

4 + 3

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qe3#
  • Tries
    • 1.Qc5+?
      • 1...d5
        • 2.Qe3#
      • 1...dxc5!
    • 1.Qg4?
      • threat
        • 2.Rf5#
        • 2.Qe4#
      • 1...Sc3
        • 2.Rf5#
      • 1...Sd4
        • 2.Qe4#
      • 1...d5
        • 2.Re6#
        • 2.Qf4#
      • 1...Kd5!
  • Keys
    • 1.Qb6!
      • 1...Kd5
        • 2.Rf5#
      • 1...Sa3
        • 2.Qxd6#
      • 1...Sc3
        • 2.Qxd6#
      • 1...Sd4
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qxd6#
      • 1...Sc7
        • 2.Qxd6#
      • 1...d5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR2(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • P(c);P_SPINP(c),SBLOCK::QAR2(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::R1(C)
        • S(a);::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::R(C)
      • S(a);N_GUARD::QAB1(A),XP(c)
      • P(c);SBLOCK::QAR2(A)
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