MESON Chess Problem Database

Problem Display
PID: 245532 (6B1/1R6/Q3N3/3k4/3P4/6K1/8/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2005

6B1/1R6/Q3N3/3k4/3P4/6K1/8/8

#2

6 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kxd4!
    • 1.Rb5+?
      • 1...Ke4
        • 2.Re5#
      • 1...Kc4!
    • 1.Qb5+?
      • 1...Kd6
        • 2.Rd7#
        • 2.Qd7#
        • 2.Qc5#
      • 1...Ke4!
    • 1.Qa4?
      • 1...Kd6
        • 2.Rd7#
        • 2.Qd7#
      • 1...Ke4!
    • 1.Qb6?
      • threat
        • 2.Sg5#
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4!
  • Keys
    • 1.Qa3!
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Sd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • R(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::R1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • B(F)+S(D)
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);S_FLIGHT::S(D)
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