MESON Chess Problem Database

Problem Display
PID: 233419 (5Q2/3pp2B/1Kb4B/2n1P1pp/pRPkpN2/2pN3q/5P2/3R2n1 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Freie Presse, 1973

5Q2/3pp2B/1Kb4B/2n1P1pp/pRPkpN2/2pN3q/5P2/3R2n1

#2

11 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb5
      • 2.cxb5#
    • 1...Bd5
      • 2.cxd5#
    • 1...Se2
      • 2.Sxe2#
    • 1...Sf3
      • 2.Se2#
    • 1...Sb3
      • 2.c5#
    • 1...Se6
      • 2.c5#
    • 1...Sb7
      • 2.c5#
    • 1...d5
      • 2.cxd5#
    • 1...e6
      • 2.Qxc5#
  • Tries
    • 1.Sxc5+?
      • 1...Kxe5
        • 2.Sg6#
        • 2.Bg7#
      • 1...Qd3!
    • 1.Qg7?
      • threat
        • 2.e6#
      • 1...Qf5
        • 2.Sxc5#
      • 1...Qe6
        • 2.Sxc5#
      • 1...Sf3
        • 2.Se2#
      • 1...Se6
        • 2.c5#
      • 1...e6!
    • 1.Qh8?
      • threat
        • 2.e6#
      • 1...Qf5
        • 2.Sxc5#
      • 1...Qe6
        • 2.Sxc5#
      • 1...Sf3
        • 2.Se2#
      • 1...Se6
        • 2.c5#
      • 1...e6!
  • Keys
    • 1.Bg7!
      • threat
        • 2.e6#
      • 1...Qf5
        • 2.Sxc5#
      • 1...Qe6
        • 2.Sxc5#
      • 1...Sf3
        • 2.Se2#
      • 1...Se6
        • 2.c5#
      • 1...e6
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • B(j);OGATE::R(D)+P(E),XB(j)
    • S(a);N_GUARD::S(F),XS(a)
    • S(a);N_GUARD::S(F)
    • S(g);OGATE::R(D)+P(E)
    • P(k);OGATE::R(D)+P(E),XP(k)
    • P(l);OGATE::QAB1(K),XS(g)
  • Tries
    • Try
      • S(C);CHECK,XS(g)
      • Refutation
        • Q(c);P_SPINQ(c)
    • Try
      • Q(K);
      • Threat
        • QAB(K)+P(G)
      • Vars
        • Q(c);N_GUARD::R(A)+S(C),XS(g)
        • S(a);N_GUARD::S(F)
        • S(g);OGATE::R(D)+P(E)
      • Refutation
        • P(l);
    • Try
      • Q(K);
      • Threat
        • QAB(K)+P(G)
      • Vars
        • Q(c);N_GUARD::R(A)+S(C),XS(g)
        • S(a);N_GUARD::S(F)
        • S(g);OGATE::R(D)+P(E)
      • Refutation
        • P(l);
  • Actual
    • B(I);
    • Threat
      • B(I)+P(G)
    • Vars
      • Q(c);N_GUARD::R(A)+S(C),XS(g)
      • S(a);N_GUARD::S(F)
      • S(g);OGATE::R(D)+P(E)
      • P(l);OGATE::QAB1(K),XS(g)
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