MESON Chess Problem Database

Problem Display
PID: 214060 (2Q5/8/1p6/3k4/1B3K2/8/8/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1973

2Q5/8/1p6/3k4/1B3K2/8/8/8

#2

3 + 2

15148 Sadier Collection 2020
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Kf5?
      • 1...b5
        • 2.Qc5#
      • 1...Kd4!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kxe6!
    • 1.Qc5+?
      • 1...Ke6
        • 2.Qf5#
      • 1...bxc5!
    • 1.Qc6+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kxc6!
    • 1.Qe8?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...Kc4!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...Ke6
        • 2.Qf5#

Anticipated by 47228(1850), 175709(1921)

FEATURES

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