MESON Chess Problem Database

Problem Display
PID: 134822 (B2bK3/2qp1N2/2pp4/5p1R/N1PPkpp1/3R3b/2p1PP1B/3nQ3 w - - 0 1)

Agostini, Valerio

Mariani, Stefano

Die Schwalbe, 2009

B2bK3/2qp1N2/2pp4/5p1R/N1PPkpp1/3R3b/2p1PP1B/3nQ3

#2

12 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Sxd6#
    • 1...Qb6
      • 2.Sxd6#
    • 1...Qa7
      • 2.Sxd6#
    • 1...Qb7
      • 2.Sxd6#
    • 1...Qc8
      • 2.Sxd6#
    • 1...Bg5
      • 2.Sxg5#
    • 1...Sb2
      • 2.Sc3#
    • 1...Sxf2
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Se3
      • 2.Sc3#
    • 1...g3
      • 2.f3#
    • 1...d5
      • 2.Sc5#
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qxf5#
      • 1...Qxa5
        • 2.Sxd6#
      • 1...Bg5
        • 2.Sxg5#
      • 1...Se3
        • 2.Sc3#
      • 1...g3
        • 2.f3#
      • 1...d5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(j);N_GUARD::S(J),XP(i)
    • Q(j);N_GUARD,N_SPINP(h)::S(J),XP(i)
    • B(l);N_GUARD::S(J),XB(l)
    • S(a);N_GUARD::S(F)
    • S(a);N_GUARD,XP(C)::S(F)
    • S(a);N_GUARD::S(F),XS(a)
    • P(f);N_GUARD::P(C)
    • P(i);N_GUARD,N_SPINP(h)::S(F)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XP(g)
    • Vars
      • Q(j);N_GUARD,XQ(A)::S(J),XP(i)
      • B(l);N_GUARD::S(J),XB(l)
      • S(a);N_GUARD::S(F)
      • P(f);N_GUARD::P(C)
      • P(i);N_GUARD,N_SPINP(h)::S(F)
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