MESON Chess Problem Database

Problem Display
PID: 79850 (4K3/8/8/2pk4/2N5/1R6/8/4Q3 w - - 0 1)

Asov, Aleksei

Problemist Pribuzhya, 1991

4K3/8/8/2pk4/2N5/1R6/8/4Q3

#2

4 + 2

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rc3?
      • 1...Kd4
        • 2.Qe5#
      • 1...Kc6!
    • 1.Qc3?
      • 1...Ke4
        • 2.Qe5#
      • 1...Ke6
        • 2.Qe5#
      • 1...Kc6!
    • 1.Qe2?
      • 1...Kd4
        • 2.Qd3#
      • 1...Kc6!
    • 1.Qe3?
      • 1...Kxc4
        • 2.Qd3#
      • 1...Kc6!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Sa5#
        • 2.Rb6#
        • 2.Qd6#
      • 1...Kxc4!
  • Keys
    • 1.Qg3!
      • 1...Kxc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qe5#

Anticipated by 76747(1944)

This anticipates 171325(1994)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT,XS(C)::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(C)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT,XS(C)::QAB1(A)
      • K(b);P-FLIGHT::QAR1(A)
      • K(b);S_FLIGHT::QAR1(A)
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