MESON Chess Problem Database

Problem Display
PID: 46186 (5K2/3p1Pp1/3pk3/8/5Q2/3p4/4N3/2R5 w - - 0 1)

Sukhnev, Valery

The Problemist Supplement, 2003

5K2/3p1Pp1/3pk3/8/5Q2/3p4/4N3/2R5

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qf5#
    • 1...d5
      • 2.Sd4#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qe4#
      • 1...d5
        • 2.Re1#
      • 1...g6!
    • 1.Rf1?
      • threat
        • 2.Qe4#
        • 2.Qf5#
      • 1...d5
        • 2.Sd4#
      • 1...g6
        • 2.Qe4#
      • 1...Kd5!
    • 1.Rc5?
      • threat
        • 2.Sd4#
        • 2.Qf5#
      • 1...dxe2
        • 2.Qf5#
      • 1...d5
        • 2.Sd4#
      • 1...g6
        • 2.Sd4#
      • 1...dxc5!
  • Keys
    • 1.Kxg7!
      • threat
        • 2.Qe4#
      • 1...Kd5
        • 2.Qf5#
      • 1...Ke7
        • 2.Qf6#
      • 1...d5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR2(C)
    • P(b);SBLOCK::S(B)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB1(C)
      • Vars
        • K(c);S_FLIGHT::QAB1(C)
        • P(b);SBLOCK::R(A)
      • Refutation
        • P(e);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);SBLOCK::S(B)
        • P(e);::QAR2(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XS(B)::QAB1(C)
        • P(b);::S(B)
        • P(e);::S(B)
      • Refutation
        • P(b);XR(A)
  • Actual
    • K(E);S_FLIGHT,XP(e)
    • Threat
      • QAR2(C)
    • Vars
      • K(c);S_FLIGHT::QAR2(C)
      • K(c);P-FLIGHT::QAB1(C)
      • P(b);SBLOCK::QAR1(C)
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