MESON Chess Problem Database

Problem Display
PID: 28345 (8/4q2B/br5p/3p1R2/3Nk1P1/8/5P1b/B3N2K w - - 0 1)

Safronov, EK

2nd HM., Socialicheski Donbass, 1965

8/4q2B/br5p/3p1R2/3Nk1P1/8/5P1b/B3N2K

#2

8 + 7

3242 BCPS Rapid Solving (Cheltenham) 2001

SOLUTION

  • SOUND
  • Tries
    • 1.Sdc2?
      • threat
        • 2.f3#
      • 1...Qa3
        • 2.Rf6#
      • 1...Rb3
        • 2.Rf7#
      • 1...Be2!
    • 1.Sdf3?
      • threat
        • 2.Sd2#
      • 1...Qb4
        • 2.Rf6#
      • 1...Rb2
        • 2.Rf7#
      • 1...Bf4
        • 2.Re5#
      • 1...Qg5!
    • 1.Rf6+?
      • 1...Ke5
        • 2.Sdf3#
        • 2.Sc6#
      • 1...Qxh7!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Sd2#
      • 1...Rxb3
        • 2.Rf7#
      • 1...Qb4
        • 2.Rf6#
      • 1...Qg5
        • 2.Sc5#
      • 1...Bf4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • P(D)
      • Vars
        • Q(g);N_GUARD::B(H)+R(G)
        • R(e);N_GUARD::B(H)+R(G)
      • Refutation
        • B(d);
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • Q(g);N_GUARD::B(H)+R(G)
        • R(e);N_GUARD::B(H)+R(G)
        • B(a);SBLOCK::B(H)+R(G),DCHECK
      • Refutation
        • Q(g);
    • Try
      • R(G);CHECK
      • Refutation
        • Q(g);XB(H)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • R(e);N_GUARD,XS(E)::B(H)+R(G)
      • Q(g);N_GUARD::B(H)+R(G)
      • Q(g);N_GUARD::S(E)
      • B(a);SBLOCK::B(H)+R(G),DCHECK
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