MESON Chess Problem Database

Problem Display
PID: 226649 (BB1b4/2r5/4NR2/RNp1k1P1/8/4p2r/5Ppq/2K2n2 w - - 0 1)

Zimanskis, AC

British Chess Magazine, 1931

BB1b4/2r5/4NR2/RNp1k1P1/8/4p2r/5Ppq/2K2n2

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.f4#
    • 1...Qh1
      • 2.f4#
    • 1...Rg3
      • 2.f4#
    • 1...Sg3
      • 2.f4#
  • Tries
    • 1.Sg7?
      • threat
        • 2.Rf5#
      • 1...Bxf6
        • 2.Bxc7#
      • 1...Qf4
        • 2.Re6#
      • 1...Sg3
        • 2.f4#
      • 1...Rf3!
    • 1.Sf8?
      • threat
        • 2.Sg6#
        • 2.Sd7#
      • 1...Rh6
        • 2.Sd7#
      • 1...Rh7
        • 2.Sg6#
      • 1...Bxf6!
  • Keys
    • 1.Sed4!
      • threat
        • 2.Rf5#
      • 1...cxd4+
        • 2.Sc3#
        • 2.Sxc7#
      • 1...Bxf6
        • 2.Bxc7#
      • 1...Qf4
        • 2.Re6#
      • 1...Rf3
        • 2.Sxf3#
      • 1...Sg3
        • 2.Sf3#
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(c);N_GUARD::P(B)
    • R(e);S_CUTQ(c)::P(B)
    • S(a);S_CUTQ(c)::P(B)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • B(i);N_GUARD,XR(G)::B(I),XR(h)
        • Q(c);SBLOCK::R1(G)
        • S(a);S_CUTQ(c)::P(B)
      • Refutation
        • R(e);
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);::S(F)
      • Refutation
        • B(i);XR(G)
  • Actual
    • S(F);
    • Threat
      • R1(G)
    • Vars
      • B(i);N_GUARD,XR(G)::B(I),XR(h)
      • Q(c);SBLOCK::R1(G)
      • R(e);N_GUARD::S(F),XR(e)
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