MESON Chess Problem Database

Problem Display
PID: 157447 (1R3N2/3Nk1pq/2p2p2/K1p3p1/2B1p1P1/6Q1/8/8 w - - 0 1)

Tkachenko, Sergiy Ivanovich

The Problemist, 2015

1R3N2/3Nk1pq/2p2p2/K1p3p1/2B1p1P1/6Q1/8/8

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Sxc5?
      • threat
        • 2.Qc7#
      • 1...f5
        • 2.Qe5#
      • 1...Qh2
        • 2.Sg6#
      • 1...Qf5!
    • 1.Se5?
      • threat
        • 2.Sxc6#
      • 1...Kd6
        • 2.Seg6#
      • 1...fxe5
        • 2.Qxe5#
      • 1...f5!
    • 1.Sb6?
      • threat
        • 2.Qc7#
      • 1...f5
        • 2.Qe5#
      • 1...Qh2
        • 2.Sg6#
      • 1...Qf5!
    • 1.Qc7?
      • threat
        • 2.Sxc5#
        • 2.Se5#
        • 2.Sb6#
      • 1...Qh2
        • 2.Se5#
        • 2.Sg6#
      • 1...f5
        • 2.Qe5#
      • 1...Qf5!
  • Keys
    • 1.Sxf6!
      • threat
        • 2.Qe5#
      • 1...Kxf6
        • 2.Qd6#
      • 1...gxf6
        • 2.Qc7#
      • 1...Qf5
        • 2.Sg8#
      • 1...Qg8
        • 2.Sxg8#
      • 1...Qh2
        • 2.Sg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(e);N_GUARD::QAR2(A)
  • Tries
    • Try
      • S(E);XP(b)
      • Threat
        • QAR2(A)
      • Vars
        • P(e);N_GUARD::QAR2(A)
        • Q(h);N_GUARD::S(G)
      • Refutation
        • Q(h);P_PINS(E)
    • Try
      • S(E);
      • Threat
        • S(E),XP(d)
      • Vars
        • K(f);S_FLIGHT::QAB(A)+S(E)
        • P(e);OGATE,XS(E)::QAR2(A),XP(e)
      • Refutation
        • P(e);
    • Try
      • S(E);
      • Threat
        • QAR2(A)
      • Vars
        • P(e);N_GUARD::QAR2(A)
        • Q(h);N_GUARD::S(G)
      • Refutation
        • Q(h);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(e);N_GUARD::QAR2(A)
      • Refutation
        • Q(h);
  • Actual
    • S(E);XP(e)
    • Threat
      • QAR2(A)
    • Vars
      • K(f);S_FLIGHT,XS(E)::QAR2(A)
      • P(g);SBLOCK,XS(E)::QAR2(A)
      • Q(h);N_GUARD::S(E)
      • Q(h);N_GUARD::S(E),XQ(h)
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