MESON Chess Problem Database

Problem Display
PID: 238205 (8/7Q/6R1/K1N1R3/3k4/8/3N4/8 w - - 0 1)

Murashev, Pavel Aleksandrovich

Kudesnik, 2011

8/7Q/6R1/K1N1R3/3k4/8/3N4/8

#2

6 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sb1?
      • 1...Kc4
        • 2.Rg4#
        • 2.Qh4#
      • 1...Kxe5!
    • 1.Sa4?
      • 1...Kd3
        • 2.Rd6#
      • 1...Kxe5!
    • 1.Re4+?
      • 1...Kxc5
        • 2.Qh5#
      • 1...Kd5
        • 2.Qh5#
      • 1...Kc3!
    • 1.Ra6?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kc3!
    • 1.Rc6?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kc3!
    • 1.Rd6+?
      • 1...Kc3
        • 2.Sa4#
      • 1...Kxe5!
    • 1.Rh6?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kc3!
    • 1.Qh1?
      • threat
        • 2.Qa1#
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kc3!
    • 1.Qh4+?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kc3!
    • 1.Qb7?
      • threat
        • 2.Qb2#
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kc3!
    • 1.Qd7+?
      • 1...Kxe5
        • 2.Sd3#
      • 1...Kc3!
    • 1.Qf7?
      • 1...Kxe5
        • 2.Sf3#
      • 1...Kc3!
  • Keys
    • 1.Rb6!
      • 1...Kc3
        • 2.Qd3#
      • 1...Kxe5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • S(C);
      • Vars
        • K(a);P-FLIGHT::QAB(F)+R(E),DCHECK
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(D);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(C)::QAR(F)
        • K(a);P-FLIGHT::QAR(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(D)::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XR(D)::S(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(a);S_FLIGHT::QAR1(F)
      • K(a);S_FLIGHT,XR(D)::QAR1(F)
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