MESON Chess Problem Database

Problem Display
PID: 149905 (3B2nr/3p4/3kNbRp/2R5/2Bp4/p2N4/p3r3/Kn6 w - - 0 1)

Burr, Otto

Shakhmatnaya kompozitsiya, 2010

3B2nr/3p4/3kNbRp/2R5/2Bp4/p2N4/p3r3/Kn6

#2

7 + 11

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Be7
      • 2.Bc7#
    • 1...Se7
      • 2.Bc7#
  • Tries
    • 1.Sc7?
      • threat
        • 2.Sb5#
      • 1...Rb2
        • 2.Se8#
      • 1...Sc3!
    • 1.Sg7?
      • threat
        • 2.Sf5#
      • 1...Rf2
        • 2.Se8#
      • 1...Se7
        • 2.Bc7#
      • 1...Re5!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Rd5#
      • 1...Re5
        • 2.Sb5#
      • 1...Sc3
        • 2.Sf5#
      • 1...Se7
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(g);SBLOCK::B(G)
    • S(j);SBLOCK::B(G)
  • Tries
    • Try
      • S(E);P_PINB(g)
      • Threat
        • S(E)
      • Vars
        • R(c);N_GUARD::S(E)
      • Refutation
        • S(a);
    • Try
      • S(E);P_PINB(g)
      • Threat
        • S(E)
      • Vars
        • R(c);N_GUARD::S(E)
        • S(j);SBLOCK::B(G)
      • Refutation
        • R(c);
  • Actual
    • S(E);P_PINB(g),P_SPINS(E),XP(e)
    • Threat
      • R1(D)
    • Vars
      • R(c);N_PINS(E)::S(E)
      • S(a);N_PINS(E)::S(E)
      • S(j);SBLOCK::B(G)
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