MESON Chess Problem Database

Problem Display
PID: 160379 (8/8/8/8/8/5P2/4R3/3Q1Knk w - - 0 1)

Abdullayev, Suleyman

ChessStar, 2011

8/8/8/8/8/5P2/4R3/3Q1Knk

#2

4 + 2

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Rf2?
      • 1...Sxf3
        • 2.Qxf3#
      • 1...Se2
        • 2.Kxe2#
      • 1...Sh3!
    • 1.Qc2?
      • threat
        • 2.Rh2#
      • 1...Sxe2
        • 2.Qh7#
      • 1...Sxf3!
    • 1.Qd2?
      • threat
        • 2.Rh2#
      • 1...Sxe2
        • 2.Qh6#
      • 1...Sxf3!
    • 1.Qd3?
      • 1...Sxe2
        • 2.Qh7#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...Sh3!
    • 1.Qd6?
      • threat
        • 2.Rh2#
        • 2.Qh2#
      • 1...Sxe2
        • 2.Qh6#
      • 1...Sxf3!
    • 1.Qd7?
      • 1...Sxe2
        • 2.Qh3#
        • 2.Qh7#
      • 1...Sh3
        • 2.Qxh3#
      • 1...Sxf3!
  • Keys
    • 1.Qd5!
      • 1...Sxe2
        • 2.Qh5#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...Sh3
        • 2.f4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Vars
        • S(a);OGATE,XP(D)::QAB(A),XS(a)
        • S(a);::QAR(A)+K(B),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • R1(C)
      • Vars
        • S(a);N_GUARD,XR(C)::QAR(A)
      • Refutation
        • S(a);XP(D)
    • Try
      • Q(A);
      • Threat
        • R1(C)
      • Vars
        • S(a);N_GUARD,XR(C)::QAR(A)
      • Refutation
        • S(a);XP(D)
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD,XR(C)::QAR(A)
        • S(a);OGATE,XP(D)::QAB(A),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD,XR(C)::QAR(A)
      • Refutation
        • S(a);XP(D)
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAR2(A),XS(a)
      • Refutation
        • S(a);XP(D)
  • Actual
    • Q(A);
    • Vars
      • S(a);N_GUARD,XR(C)::QAR(A)
      • S(a);OGATE,P_SPINS(a),XP(D)::QAB(A),XS(a)
      • S(a);N_GUARD::QAB(A)+P(D)
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