MESON Chess Problem Database

Problem Display
PID: 79841 (4K3/8/1P6/R2pk3/4N1Q1/8/8/8 w - - 0 1)

Asaulenko, Ivan

Problemist Pribuzhya, 1991

4K3/8/1P6/R2pk3/4N1Q1/8/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sg5?
      • 1...Kd6
        • 2.Qe6#
      • 1...Kf6!
    • 1.Ra4?
      • 1...d4
        • 2.Ra5#
      • 1...dxe4!
    • 1.Qf3?
      • 1...Ke6
        • 2.Qf6#
      • 1...Kd4!
  • Keys
    • 1.Sc5!
      • 1...Kd6
        • 2.Qe6#
      • 1...Kf6
        • 2.Sd7#
      • 1...d4
        • 2.Se4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • R(C);N_PINP(a)
      • Vars
        • P(a);OGATEB,SBLOCK::R(C)
      • Refutation
        • P(a);XS(A)
    • Try
      • Q(B);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
  • Actual
    • S(A);N_PINP(a)
    • Vars
      • K(b);S_FLIGHT::QAR1(B)
      • K(b);S_FLIGHT::S(A)
      • P(a);SBLOCK::R(C)+S(A)
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