MESON Chess Problem Database

Problem Display
PID: 203049 (3K4/4p3/3k4/2N2Q2/8/8/8/8 w - - 0 1)

Bylevski, Aleksandr

Sachova skladba, 1990

3K4/4p3/3k4/2N2Q2/8/8/8/8

#2

3 + 2

5454 Near Snap 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • 1...e5
        • 2.Qd7#
      • 1...e6
        • 2.Qc5#
      • 1...Kc6!
    • 1.Sd3?
      • threat
        • 2.Qd7#
      • 1...e6
        • 2.Qc5#
      • 1...Kc6!
    • 1.Sa6?
      • 1...e5
        • 2.Qd7#
      • 1...e6
        • 2.Qc5#
      • 1...Kc6!
  • Keys
    • 1.Sa4!
      • 1...Kc6
        • 2.Qd7#
      • 1...e5
        • 2.Qd7#
      • 1...e6
        • 2.Qc5#

Anticipated by 76796(1945)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Vars
        • P(b);SBLOCK::QAR1(B)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Threat
        • QAR1(B)
      • Vars
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • P(b);SBLOCK::QAR1(B)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(a);P-FLIGHT::QAB1(B)
      • P(b);SBLOCK::QAR1(B)
      • P(b);SBLOCK::QAB1(B)
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