MESON Chess Problem Database

Problem Display
PID: 238737 (B3R1RK/8/2Np3p/Q1B2k2/5Pp1/1pN1p3/7P/n4n2 w - - 0 1)

Erokhin, Vladimir Alekseevich

L'Italia Scacchistica, 1982

B3R1RK/8/2Np3p/Q1B2k2/5Pp1/1pN1p3/7P/n4n2

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Ref8#
  • Tries
    • 1.Kh7?
      • threat
        • 2.Rgf8#
      • 1...Kxf4
        • 2.Ref8#
      • 1...Kf6
        • 2.Rgf8#
      • 1...g3!
    • 1.Sd5?
      • threat
        • 2.Sd4#
      • 1...dxc5
        • 2.Re5#
      • 1...Sc2!
    • 1.Sd4+?
      • 1...Kxf4
        • 2.Sce2#
        • 2.Sd5#
        • 2.Bxd6#
        • 2.Re4#
      • 1...Kf6!
    • 1.Bd4+?
      • 1...Kxf4
        • 2.Ref8#
        • 2.Rgf8#
      • 1...d5!
    • 1.Qc7?
      • threat
        • 2.Qf7#
      • 1...Kxf4
        • 2.Ref8#
        • 2.Qf7#
      • 1...Kf6!
    • 1.Qa7?
      • threat
        • 2.Qf7#
      • 1...Kxf4
        • 2.Ref8#
        • 2.Qf7#
      • 1...Kf6!
  • Keys
    • 1.Sd8!
      • threat
        • 2.Ref8#
      • 1...Kxf4
        • 2.Bxd6#
      • 1...Kf6
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(f);P-FLIGHT,XP(C)::R(H)
  • Tries
    • Try
      • K(J);P-FLIGHT
      • Threat
        • R(I)
      • Vars
        • K(f);P-FLIGHT,XP(C)::R(H)
        • K(f);P-FLIGHT::R(I)
      • Refutation
        • P(e);
    • Try
      • S(B);
      • Threat
        • S(F)
      • Vars
        • P(g);N_GUARD,XB(E)::R1(H)
      • Refutation
        • S(a);
    • Try
      • S(F);CHECK
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • B(E);CHECK
      • Refutation
        • P(g);P_SPINP(g)
    • Try
      • Q(D);
      • Threat
        • QAR2(D)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAR2(D)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • S(F);
    • Threat
      • R(H)
    • Vars
      • K(f);P-FLIGHT,XP(C)::B(E),XP(g)
      • K(f);P-FLIGHT::B(E)
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