MESON Chess Problem Database

Problem Display
PID: 133874 (1n2K2n/8/2RpNpR1/2N1k3/2ppPpp1/8/8/4B3 w - - 0 1)

Morra, Juan Carlos

The Field, 1962

(First published on Thu Jun 14 1962)

1n2K2n/8/2RpNpR1/2N1k3/2ppPpp1/8/8/4B3

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Bc3#
    • 1...f3
      • 2.Bg3#
  • Tries
    • 1.Rg5+?
      • 1...f5
        • 2.Rxf5#
      • 1...fxg5!
  • Keys
    • 1.Sg5!
      • 1...Sxc6
        • 2.Sd7#
      • 1...Sxg6
        • 2.Sf7#
      • 1...dxc5
        • 2.Re6#
      • 1...fxg5
        • 2.Re6#
      • 1...d3
        • 2.Bc3#
      • 1...f3
        • 2.Bg3#
      • 1...Sa6
        • 2.Sd7#
      • 1...Sd7
        • 2.Sxd7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...c3
        • 2.Sd3#
      • 1...g3
        • 2.Sf3#
      • 1...d5
        • 2.Re6#
      • 1...f5
        • 2.Re6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::B(A)
    • P(c);OGATEB::B(A)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • P(g);P_SPINP(g)::R1(F),XP(g)
      • Refutation
        • P(g);XR(F)
  • Actual
    • S(E);
    • Vars
      • S(h);N_GUARD,XR(D)::S(C)
      • S(i);N_GUARD,XR(F)::S(E)
      • P(f);OGATE,XS(C)::R1(D)
      • P(g);OGATE,XS(E)::R1(F)
      • P(b);OGATEB::B(A)
      • P(c);OGATEB::B(A)
      • S(h);N_GUARD::S(C)
      • S(h);N_GUARD::S(C),XS(h)
      • S(i);N_GUARD::S(E),XS(i)
      • P(a);N_GUARD::S(C)
      • P(d);N_GUARD::S(E)
      • P(f);OGATE::R1(D)
      • P(g);OGATE::R1(F)
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