MESON Chess Problem Database

Problem Display
PID: 239776 (6r1/3B3Q/2P4p/4P3/2p2ppK/5k2/R7/3N3n w - - 0 1)

Mirri, Giorgio

The Problemist, 1988

6r1/3B3Q/2P4p/4P3/2p2ppK/5k2/R7/3N3n

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Bxg4#
    • 1...Rb8
      • 2.Bxg4#
    • 1...Rc8
      • 2.Bxg4#
    • 1...Rd8
      • 2.Bxg4#
    • 1...Re8
      • 2.Bxg4#
    • 1...Rf8
      • 2.Bxg4#
    • 1...Rh8
      • 2.Bxg4#
    • 1...Sf2
      • 2.Rxf2#
    • 1...Sg3
      • 2.Rf2#
    • 1...c3
      • 2.Qd3#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Be4#
      • 1...Sf2
        • 2.Rxf2#
      • 1...Sg3
        • 2.Rf2#
      • 1...Rg6!
    • 1.Qc2?
      • threat
        • 2.Qe2#
        • 2.Qg2#
      • 1...Sg3
        • 2.Qg2#
      • 1...Sf2!
    • 1.c7?
      • threat
        • 2.Bc6#
      • 1...Sf2
        • 2.Rxf2#
      • 1...Rd8
        • 2.Bxg4#
      • 1...Sg3
        • 2.Rf2#
      • 1...Rg6!
  • Keys
    • 1.Be6!
      • threat
        • 2.Bd5#
      • 1...Sf2
        • 2.Rxf2#
      • 1...Rd8
        • 2.Bxg4#
      • 1...Sg3
        • 2.Rf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • R(g);N_GUARD::B(F),XP(e)
    • S(a);N_GUARD::R1(B),XS(a)
    • S(a);N_GUARD::R1(B)
    • P(c);N_GUARD::QAR2(G)
  • Tries
    • Try
      • B(F);
      • Threat
        • B(F)
      • Vars
        • S(a);N_GUARD::R1(B),XS(a)
        • S(a);N_GUARD::R1(B)
      • Refutation
        • R(g);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB1(G)
      • Refutation
        • S(a);
    • Try
      • P(E);
      • Threat
        • B(F)
      • Vars
        • S(a);N_GUARD::R1(B),XS(a)
        • R(g);N_GUARD::B(F),XP(e)
        • S(a);N_GUARD::R1(B)
      • Refutation
        • R(g);
  • Actual
    • B(F);
    • Threat
      • B(F)
    • Vars
      • S(a);N_GUARD::R1(B),XS(a)
      • R(g);N_GUARD::B(F),XP(e)
      • S(a);N_GUARD::R1(B)
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