MESON Chess Problem Database

Problem Display
PID: 157446 (3B2nK/8/pp3p2/N4R2/NkP3PQ/p4n2/1b1p4/1R1B4 w - - 0 1)

Guida, Marco

The Problemist, 2015

3B2nK/8/pp3p2/N4R2/NkP3PQ/p4n2/1b1p4/1R1B4

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sh6
      • 2.Be7#
    • 1...Se7
      • 2.Bxe7#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qxb6#
      • 1...bxa5
        • 2.Qc5#
      • 1...Sd4
        • 2.Qxd2#
      • 1...b5
        • 2.Qc5#
      • 1...a2!
    • 1.Qg3?
      • threat
        • 2.Qd6#
      • 1...Se5
        • 2.Qc3#
      • 1...bxa5!
  • Keys
    • 1.Qxf6!
      • threat
        • 2.Qc3#
      • 1...Sxf6
        • 2.Be7#
      • 1...Se5
        • 2.Qxb6#
      • 1...Sd4
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(i);N_GUARD::B(I)
    • S(i);N_GUARD::B(I),XS(i)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR2(F),XP(g)
      • Vars
        • P(g);N_GUARD,XS(G)::QAB1(F)
        • S(d);N_GUARD::QAB(F),XP(b)
        • P(g);N_GUARD::QAB1(F)
      • Refutation
        • P(c);
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • S(d);OGATE::QAB1(F)
      • Refutation
        • P(g);XS(G)
  • Actual
    • Q(F);P_SPINQ(F),XP(h)
    • Threat
      • QAB1(F)
    • Vars
      • S(i);N_GUARD,XQ(F)::B(I)
      • S(d);N_PINQ(F)::QAR2(F),XP(g)
      • S(d);N_PINQ(F)::QAB(F)
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