MESON Chess Problem Database

Problem Display
PID: 79842 (1n6/5p1N/8/4k3/6QK/3R4/8/8 w - - 0 1)

Asaulenko, Ivan

Problemist Pribuzhya, 1992

1n6/5p1N/8/4k3/6QK/3R4/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kg5?
      • threat
        • 2.Qe2#
        • 2.Qf5#
      • 1...f5
        • 2.Qe2#
        • 2.Qxf5#
      • 1...f6+!
    • 1.Sf6?
      • 1...Sa6
        • 2.Sd7#
      • 1...Sc6
        • 2.Sd7#
      • 1...Sd7
        • 2.Sxd7#
      • 1...Kxf6!
    • 1.Qe2+?
      • 1...Kf4
        • 2.Rf3#
      • 1...Kf5!
    • 1.Qd4+?
      • 1...Ke6
        • 2.Qf6#
        • 2.Qe4#
      • 1...Kf5!
    • 1.Qf4+?
      • 1...Ke6
        • 2.Qe4#
        • 2.Qf6#
      • 1...Kxf4!
    • 1.Qg5+?
      • 1...Ke6
        • 2.Sf8#
        • 2.Qf6#
      • 1...f5
        • 2.Qe3#
      • 1...Ke4!
  • Keys
    • 1.Sf8!
      • 1...Kf6
        • 2.Qg5#
      • 1...Sa6
        • 2.Sd7#
      • 1...Sc6
        • 2.Sd7#
      • 1...Sd7
        • 2.Sxd7#
      • 1...f5
        • 2.Qd4#
      • 1...f6
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);CHECK
    • Try
      • S(D);
      • Vars
        • S(c);N_GUARD::S(D)
        • S(c);N_GUARD::S(D),XS(c)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • P(b);P_SPINP(b),SBLOCK::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • S(c);N_GUARD::S(D)
      • S(c);N_GUARD::S(D),XS(c)
      • P(b);SBLOCK::QAB1(B)
      • P(b);N_GUARD,SBLOCK::S(D)
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