MESON Chess Problem Database

Problem Display
PID: 216696 (8/1N6/8/2p5/3kpQ2/8/2R5/K7 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1975

8/1N6/8/2p5/3kpQ2/8/2R5/K7

#2

4 + 3

15148 Sadier Collection 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qd2#
    • 1...Kd5
      • 2.Qd6#
  • Tries
    • 1.Kb1?
      • 1...Kd3
        • 2.Qd2#
      • 1...Kd5
        • 2.Qd6#
      • 1...c4!
    • 1.Ka2?
      • 1...Kd3
        • 2.Qd2#
      • 1...Kd5
        • 2.Qd6#
      • 1...c4!
    • 1.Qg3?
      • 1...Kd5
        • 2.Qd6#
      • 1...c4
        • 2.Rd2#
      • 1...e3!
    • 1.Qf6+?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kd5
        • 2.Rxc5#
        • 2.Qd6#
      • 1...Ke3!
  • Keys
    • 1.Kb2!
      • 1...Kd3
        • 2.Qd2#
      • 1...Kd5
        • 2.Qd6#
      • 1...c4
        • 2.Rd2#

This anticipates 79254(1982)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);N_PINP(b)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • P(c);SBLOCK::R(B)
      • Refutation
        • P(b);
    • Try
      • Q(C);CHECK,N_PINP(b)
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Vars
      • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • P(c);SBLOCK::R(B)
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Developed and maintained by Brian Stephenson.
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