MESON Chess Problem Database

Problem Display
PID: 257899 (2R1bb1B/r1p2N1K/B6p/1n6/2k1P3/3N4/4P3/1R6 w - - 0 1)

Andrade, Barry Jack da Costa

British Chess Magazine, 1934

2R1bb1B/r1p2N1K/B6p/1n6/2k1P3/3N4/4P3/1R6

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf7
      • 2.Bxb5#
    • 1...Bb4
      • 2.Rxb4#
    • 1...Bd6
      • 2.Sxd6#
    • 1...c5
      • 2.Rb4#
    • 1...c6
      • 2.Bxb5#
  • Tries
    • 1.Rxc7+?
      • 1...Bc6
        • 2.Bxb5#
      • 1...Bc5
        • 2.Sd6#
        • 2.Rb4#
        • 2.Rxc5#
      • 1...Rxc7!
  • Keys
    • 1.Ba1!
      • threat
        • 2.Sfe5#
      • 1...Bxf7
        • 2.Bxb5#
      • 1...Bd6
        • 2.Sxd6#
      • 1...Bg7
        • 2.Sd6#
        • 2.Rb4#
      • 1...c5
        • 2.Se5#
        • 2.Rb4#
      • 1...c6
        • 2.Bxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(f);N_GUARD,XS(F)::B(E),XS(b)
    • B(g);N_GUARD::R1(A),XB(g)
    • B(g);N_GUARD::S(F),XB(g)
    • P(e);P_PINS(F),S_CUTB(g)::R1(A)
    • P(e);P_PINS(F),S_CUTB(f)::B(E),XS(b)
  • Tries
    • Try
      • R(H);CHECK,XP(e)
      • Vars
        • B(f);P_SPINB(f)::B(E),XS(b)
      • Refutation
        • R(d);P_PINS(F),XR(H)
  • Actual
    • B(I);
    • Threat
      • S(F)
    • Vars
      • B(f);N_GUARD,XS(F)::B(E),XS(b)
      • B(g);N_GUARD::S(F),XB(g)
      • P(e);P_PINS(F),S_CUTB(f)::B(E),XS(b)
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