MESON Chess Problem Database

Problem Display
PID: 96918 (3B4/4Nrb1/2B5/2PR2r1/1N3kP1/2nQ1n1P/2b4P/7K w - - 0 1)

Zabala Apraiz, Miguel

Problemas, 1973

3B4/4Nrb1/2B5/2PR2r1/1N3kP1/2nQ1n1P/2b4P/7K

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Sg6#
    • 1...Re5
      • 2.Sg6#
    • 1...Rgf5
      • 2.Sg6#
    • 1...Rh5
      • 2.Sg6#
    • 1...Rg6
      • 2.Sxg6#
  • Tries
    • 1.Rf5+?
      • 1...Rgxf5
        • 2.Sg6#
      • 1...Rfxf5!
  • Keys
    • 1.Re5!
      • threat
        • 2.Qe3#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Rxe5
        • 2.Sg6#
      • 1...Bxd3
        • 2.Sxd3#
      • 1...Bxe5
        • 2.Qxf3#
      • 1...Sxe5
        • 2.Qd2#
        • 2.Qg3#
      • 1...Sd1
        • 2.Re4#
      • 1...Se4
        • 2.Rxe4#
      • 1...Sd5
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(e);N_GUARD,XR(H)::S(J)
    • R(e);N_GUARD::S(J)
    • R(e);N_GUARD::S(J),XR(e)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • R(e);XR(H)::S(J)
      • Refutation
        • R(f);XR(H)
  • Actual
    • R(H);
    • Threat
      • QAB1(C)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(H)::QAB1(C)
      • R(e);N_GUARD,XR(H)::S(J)
      • B(a);XQ(C)::S(E),XB(a)
      • B(g);SBLOCK,XR(H)::QAR1(C),XS(c)
      • S(b);N_GUARD::R1(H)
      • S(b);N_GUARD::R1(H),XS(b)
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Developed and maintained by Brian Stephenson.
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