MESON Chess Problem Database

Problem Display
PID: 246475 (3nQ3/8/5K2/8/3NR3/3k4/1B6/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Shakhmatnaya Poeziya, 2001

3nQ3/8/5K2/8/3NR3/3k4/1B6/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qb5#
  • Tries
    • 1.Re1?
      • threat
        • 2.Qe2#
      • 1...Kd2
        • 2.Qe2#
        • 2.Qe3#
      • 1...Kc4
        • 2.Qb5#
      • 1...Se6!
    • 1.Re2?
      • threat
        • 2.Qb5#
      • 1...Kc4
        • 2.Qb5#
      • 1...Sc6!
    • 1.Re3+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Kd2!
    • 1.Rf4?
      • threat
        • 2.Qe2#
      • 1...Kd2
        • 2.Qe2#
      • 1...Kc4
        • 2.Qb5#
      • 1...Se6!
    • 1.Rg4?
      • threat
        • 2.Qe2#
      • 1...Kd2
        • 2.Qe2#
      • 1...Kc4
        • 2.Qb5#
      • 1...Se6!
    • 1.Rh4?
      • threat
        • 2.Qe2#
      • 1...Kd2
        • 2.Qe2#
      • 1...Kc4
        • 2.Qb5#
      • 1...Se6!
    • 1.Qa4?
      • threat
        • 2.Qc2#
      • 1...Kd2
        • 2.Qc2#
      • 1...Kxe4!
    • 1.Qb5+?
      • 1...Kd2
        • 2.Qe2#
      • 1...Kxe4!
    • 1.Qc6?
      • threat
        • 2.Qc2#
      • 1...Kd2
        • 2.Qc2#
      • 1...Sxc6!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qe2#
      • 1...Kd2
        • 2.Qe2#
      • 1...Kc4
        • 2.Qb5#
      • 1...Kxe4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(E)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • S(b);
    • Try
      • R(C);
      • Threat
        • QAB(E)
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • S(b);
    • Try
      • R(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • S(b);
    • Try
      • R(C);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • S(b);
    • Try
      • R(C);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • S(b);
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • S(b);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(a);P-FLIGHT::QAR1(E)
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT,XR(C)::QAB1(E)
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