MESON Chess Problem Database

Problem Display
PID: 269806 (8/8/4PR1P/3p1pN1/3P2kP/6N1/4P1pK/6Q1 w - - 0 1)

Chernyavsky, Mykola Vasilovich

Murashev, Pavel Aleksandrovich

Tehtavaniekka, 2020

8/8/4PR1P/3p1pN1/3P2kP/6N1/4P1pK/6Q1

#2

10 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sxf5?
      • 1...Kf4
        • 2.Se3#
      • 1...Kh5!
    • 1.Sf3?
      • 1...f4
        • 2.Rg6#
      • 1...Kf4!
    • 1.Sh3?
      • 1...f4
        • 2.Rxf4#
      • 1...Kxh4!
    • 1.Qxg2?
      • 1...Kf4
        • 2.Qf3#
      • 1...f4
        • 2.Qh3#
      • 1...Kxh4!
    • 1.e3?
      • 1...f4
        • 2.Rxf4#
      • 1...Kxh4!
  • Keys
    • 1.Rg6!
      • 1...Kf4
        • 2.Sh3#
      • 1...Kxh4
        • 2.Sf3#
      • 1...f4
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);P_PINP(a),XP(d)
      • Vars
        • K(b);N_GUARD,N_SPINP(a),P-FLIGHT::R(I)+S(D)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • S(G);
      • Vars
        • P(d);SBLOCK::R(I)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(d)
    • Try
      • S(G);
      • Vars
        • P(d);OGATE::R1(I),XP(d)
      • Refutation
        • K(b);P-FLIGHT,XP(F)
    • Try
      • Q(A);XP(a)
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(d)::QAR1(A)
        • P(d);::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT,XP(F)
    • Try
      • P(B);
      • Vars
        • P(d);OGATE::R1(I),XP(d)
      • Refutation
        • K(b);P-FLIGHT,XP(F)
  • Actual
    • R(I);
    • Vars
      • K(b);N_GUARD,P-FLIGHT::S(G)
      • K(b);N_GUARD,P-FLIGHT,XP(F)::S(G)
      • P(d);SBLOCK::R(I)+S(G)
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