MESON Chess Problem Database

Problem Display
PID: 169869 (2nN4/4P1K1/R7/2B2k2/8/3N1P2/2n5/8 w - - 0 1)

da Silva, AP

SEPA, 1945

2nN4/4P1K1/R7/2B2k2/8/3N1P2/2n5/8

#2

7 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.e8Q?
      • threat
        • 2.Qh5#
        • 2.Qg6#
        • 2.Qe5#
      • 1...Se7
        • 2.Qh5#
      • 1...Kg5!
  • Keys
    • 1.Ra5!
      • threat
        • 2.Bg1#
        • 2.Bf2#
        • 2.Ba3#
        • 2.Be3#
        • 2.Bb4#
        • 2.Bd4#
        • 2.Bb6#
        • 2.Bd6#
        • 2.Ba7#
      • 1...Kg5
        • 2.Bf2#
      • 1...Sxe7
        • 2.Bxe7#
      • 1...Sa3
        • 2.Bxa3#
      • 1...Se3
        • 2.Bxe3#
      • 1...Sb4
        • 2.Bxb4#
      • 1...Sd4
        • 2.Bxd4#
      • 1...Sb6
        • 2.Bxb6#
      • 1...Sd6
        • 2.Bxd6#
      • 1...Sa7
        • 2.Bxa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(E);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::QAR2(E)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • R(D);
    • Threat
      • DUALS(9)
    • Vars
      • K(b);P-FLIGHT::R(D)+B(C)
      • S(c);OGATE,XP(E)::R(D)+B(C),XS(c)
      • S(a);::R(D)+B(C),XS(a)
      • S(c);::R(D)+B(C),XS(c)
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