MESON Chess Problem Database

Problem Display
PID: 202866 (8/7N/3p1BpK/5k2/8/4Q3/8/5N2 w - - 0 1)

Shanshin, Valery Yurevich

Schach, 2016

8/7N/3p1BpK/5k2/8/4Q3/8/5N2

#2

5 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qe4#
      • 1...Kg4
        • 2.Qf3#
      • 1...d5!
    • 1.Sh2?
      • 1...d5
        • 2.Qe5#
      • 1...g5!
    • 1.Sf8?
      • threat
        • 2.Qf3#
      • 1...Kxf6
        • 2.Qe6#
      • 1...Kg4!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qf3#
      • 1...Kg4
        • 2.Qe4#
      • 1...Kxf6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • P(b);
    • Try
      • S(A);
      • Vars
        • P(b);N_GUARD::QAR1(B)
      • Refutation
        • P(c);
    • Try
      • S(E);
      • Threat
        • QAR2(B)
      • Vars
        • K(a);P-FLIGHT,XB(C)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAR2(B)
    • Vars
      • K(a);S_FLIGHT::QAR2(B)
      • K(a);P-FLIGHT,XB(C)::QAR1(B)
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