MESON Chess Problem Database

Problem Display
PID: 216174 (8/8/8/pp2Q3/2k5/3p4/1K2P3/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1974

8/8/8/pp2Q3/2k5/3p4/1K2P3/8

#2

3 + 4

15148 Sadier Collection 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Qd4#
  • Tries
    • 1.Qd5+?
      • 1...Kb4
        • 2.Qd4#
      • 1...Kxd5!
    • 1.exd3+?
      • 1...Kb4
        • 2.Qd4#
      • 1...Kxd3!
    • 1.e3?
      • threat
        • 2.Qd4#
      • 1...Kb4
        • 2.Qd4#
      • 1...b4!
  • Keys
    • 1.e4!
      • threat
        • 2.Qc3#
      • 1...Kb4
        • 2.Qd4#
      • 1...b4
        • 2.Qd5#

This anticipates 239193(1987)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
    • Try
      • P(B);CHECK,XP(a)
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT,XP(B)
    • Try
      • P(B);
      • Threat
        • QAR1(C)
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • P(d);
  • Actual
    • P(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(b);P-FLIGHT::QAR2(C)
      • P(d);SBLOCK::QAB1(C)
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