MESON Chess Problem Database

Problem Display
PID: 213692 (8/1Q6/p7/4p3/3kNp2/8/2K5/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1973

8/1Q6/p7/4p3/3kNp2/8/2K5/8

#2

3 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qd5+?
      • 1...Ke3
        • 2.Qd3#
      • 1...Kxd5!
    • 1.Qxa6?
      • threat
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kd5!
    • 1.Qb5?
      • threat
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qd3#
      • 1...axb5!
    • 1.Qd7+?
      • 1...Ke3
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kc4!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);XP(d)
      • Threat
        • QAR1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • K(a);P-FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • K(a);P-FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(C)
        • K(a);OGATE,P-FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT,XS(B)::QAB1(C)
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