MESON Chess Problem Database

Problem Display
PID: 56356 (3k2NR/2NP4/K1P5/8/8/8/7B/b3r3 w - - 0 1)

Brogi, Giuseppe

Il Due Mosse, 1958

3k2NR/2NP4/K1P5/8/8/8/7B/b3r3

#2

7 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Se6#
    • 1...Rc1
      • 2.Se6#
    • 1...Rd1
      • 2.Se6#
    • 1...Rf1
      • 2.Se6#
    • 1...Rg1
      • 2.Se6#
    • 1...Rh1
      • 2.Se6#
    • 1...Re6
      • 2.Sxe6#
    • 1...Re8
      • 2.dxe8Q#
      • 2.dxe8R#
    • 1...Be5
      • 2.Se6#
  • Tries
    • 1.Sf6+?
      • 1...Re8
        • 2.Rxe8#
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Ke7!
    • 1.Sh6+?
      • 1...Ke7
        • 2.d8Q#
        • 2.d8B#
      • 1...Re8
        • 2.Rxe8#
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Bxh8!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Bc7#
      • 1...Re5
        • 2.Sge7#
      • 1...Be5
        • 2.Sgf6#

There are these versions: 259653

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::S(D)
    • R(b);N_GUARD,P_PINP(C)::S(D),XR(b)
    • R(b);OGATE::PXR(b)=Q
    • B(a);S_CUTR(b)::S(D)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::P=Q
      • Refutation
        • B(a);XR(G)
  • Actual
    • S(D);
    • Threat
      • B(A)
    • Vars
      • R(b);S_CUTB(a)::R(G)+S(F)
      • B(a);S_CUTR(b)::R(G)+S(F)
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