MESON Chess Problem Database

Problem Display
PID: 273833 (4BrNr/3qn3/4p1Rp/5knQ/1b4p1/2NP1pB1/8/7K w - - 0 1)

Bunting, Joe

The Problemist, 1932

4BrNr/3qn3/4p1Rp/5knQ/1b4p1/2NP1pB1/8/7K

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Rxf6#
    • 1...Rxe8
      • 2.Rf6#
    • 1...Sxg6
      • 2.Bxg6#
      • 2.Qxg6#
    • 1...e5
      • 2.Bxd7#
  • Tries
    • 1.Bxd7?
      • threat
        • 2.Bxe6#
      • 1...Rf6
        • 2.Rxf6#
      • 1...Sxg6!
  • Keys
    • 1.Qxh6!
      • threat
        • 2.Rxg5#
      • 1...Rxh6+
        • 2.Sxh6#
      • 1...Rfxg8
        • 2.Rf6#
      • 1...Rhxg8
        • 2.Qxg5#
      • 1...Sxg6
        • 2.Bxg6#
      • 1...Sh3
        • 2.Qxf8#
      • 1...Se4
        • 2.dxe4#
      • 1...Sf7
        • 2.Rf6#
      • 1...Sh7
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • R(j);N_GUARD::R1(F),XR(j)
    • R(j);N_GUARD,XB(G)::R1(F)
    • P(f);OGATEB::B(G),XQ(h)
  • Tries
    • Try
      • B(G);P_PINP(f),XQ(h)
      • Threat
        • B(G),XP(f)
      • Vars
        • R(j);N_GUARD::R1(F),XR(j)
      • Refutation
        • S(i);XR(F)
  • Actual
    • Q(E);N_PINS(e),P_SPINQ(E),XP(g)
    • Threat
      • R1(F),XS(e)
    • Vars
      • R(k);CHECK,XQ(E)::S(H),XR(k)
      • R(j);N_GUARD,XS(H)::R1(F)
      • R(k);N_PINQ(E),XS(H)::QAR1(E),XS(e)
      • S(i);OGATE,XR(F)::B(G),XS(i)
      • S(e);N_PINQ(E)::QAR(E),XR(j)
      • S(e);OGATE::P(C),XS(e)
      • S(e);S_CUTR(j)::R1(F)
      • S(e);N_PINQ(E)::QAR1(E)
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