MESON Chess Problem Database

Problem Display
PID: 183071 (3N4/8/8/4k3/2K2R2/5p2/7p/7Q w - - 0 1)

Ruslan, Abdullin

Kudesnik, 2017

3N4/8/8/4k3/2K2R2/5p2/7p/7Q

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kc5?
      • 1...f2
        • 2.Qe4#
      • 1...Kxf4!
    • 1.Rf8?
      • 1...Ke4
        • 2.Qe1#
      • 1...f2
        • 2.Qd5#
      • 1...Kd6!
    • 1.Qxh2?
      • 1...Kd6
        • 2.Rf7#
      • 1...f2!
  • Keys
    • 1.Rf7!
      • 1...Ke4
        • 2.Qe1#
      • 1...Kd6
        • 2.Qxh2#
      • 1...f2
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(b);OGATE::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT,XR(C)
    • Try
      • R(C);
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::QAR(A)
        • P(b);OGATE::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);XP(a)
      • Vars
        • K(c);S_FLIGHT::QAB(A)+R(C)
      • Refutation
        • P(b);
  • Actual
    • R(C);
    • Vars
      • K(c);P-FLIGHT,P_SPINP(b)::QAR(A)
      • K(c);S_FLIGHT::QAB(A),XP(a)
      • P(b);OGATE::QAR1(A)
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