MESON Chess Problem Database

Problem Display
PID: 266586 (8/8/1Q2p3/3k4/8/3K2N1/8/8 w - - 0 1)

Rozhkov, P

Zadachi i Etyudi, 2011

8/8/1Q2p3/3k4/8/3K2N1/8/8

#2

3 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd4#
  • Tries
    • 1.Kc3?
      • 1...Ke5
        • 2.Qd4#
      • 1...e5!
    • 1.Sf1?
      • 1...e5
        • 2.Se3#
      • 1...Ke5!
    • 1.Se2?
      • 1...e5
        • 2.Sc3#
      • 1...Ke5!
    • 1.Se4?
      • threat
        • 2.Qc5#
        • 2.Qb5#
        • 2.Qd6#
      • 1...e5
        • 2.Sc3#
        • 2.Sf6#
        • 2.Qd6#
      • 1...Ke5!
  • Keys
    • 1.Sh5!
      • 1...Ke5
        • 2.Qc5#
      • 1...e5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,P-FLIGHT::QAB1(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAB1(C)
      • Refutation
        • P(b);
    • Try
      • S(B);
      • Vars
        • P(b);SBLOCK::S(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(B);
      • Vars
        • P(b);SBLOCK::S(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(B);
      • Threat
        • DUALS(3)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);N_GUARD,P-FLIGHT::QAR2(C)
      • P(b);SBLOCK::S(B)
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