MESON Chess Problem Database

Problem Display
PID: 158402 (b7/3R1q2/1P6/NP1P1B1p/RBNk4/2pp1p2/4pP2/6QK w - - 0 1)

Agostini, Valerio

Brunori, Gabriele

Sant'Ambrogio, 2012

b7/3R1q2/1P6/NP1P1B1p/RBNk4/2pp1p2/4pP2/6QK

#2

12 + 8

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Qg7#
    • 1...Qg7
      • 2.Qxg7#
    • 1...c2
      • 2.Qa1#
    • 1...h4
      • 2.Qg4#
  • Tries
    • 1.Bd6?
      • threat
        • 2.Se3#
      • 1...Kxd5
        • 2.Se3#
        • 2.Be7#
      • 1...Qxd5
        • 2.Sb3#
      • 1...Bxd5
        • 2.Sb3#
      • 1...c2!
    • 1.Be7?
      • threat
        • 2.Sb3#
      • 1...c2
        • 2.Qa1#
      • 1...Qxf5!
    • 1.Qg7+?
      • 1...Qf6
        • 2.Qxf6#
      • 1...Qxg7!
  • Keys
    • 1.Se3!
      • threat
        • 2.Bd6#
      • 1...Ke5
        • 2.Bxc3#
      • 1...Qxd5
        • 2.Qg7#
      • 1...Bxd5
        • 2.Sc6#
      • 1...c2
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(g);N_GUARD,P_SPINQ(g),XP(I)::QAB(A)
    • Q(g);N_GUARD::QAB(A),XQ(g)
    • P(b);OGATEB::QAB(A)
    • P(f);N_GUARD::QAR(A)
  • Tries
    • Try
      • B(E);
      • Threat
        • R(D)+S(F)
      • Vars
        • Q(g);SBLOCK,XP(I)::S(G)
        • B(h);SBLOCK,XP(I)::S(G)
      • Refutation
        • P(b);
    • Try
      • B(E);
      • Threat
        • S(G)
      • Vars
        • P(b);OGATEB::QAB(A)
      • Refutation
        • Q(g);XB(J)
    • Try
      • Q(A);CHECK
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g)::QAB(A),XQ(g)
      • Refutation
        • Q(g);XQ(A)
  • Actual
    • S(F);
    • Threat
      • R(D)+B(E)
    • Vars
      • K(e);S_FLIGHT::B(E),XP(b)
      • Q(g);N_GUARD,P_SPINQ(g),XP(I)::QAB(A)
      • B(h);N_GUARD,P_SPINB(h),XP(I)::S(G)
      • P(b);OGATEB::QAB(A)
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