MESON Chess Problem Database

Problem Display
PID: 233168 (8/2B5/2n4K/3p2Q1/3pk3/3pbp2/6n1/4R3 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Freie Presse, 1996

8/2B5/2n4K/3p2Q1/3pk3/3pbp2/6n1/4R3

#2

4 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sh4
      • 2.Qf4#
  • Tries
    • 1.Kh5?
      • threat
        • 2.Qg6#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Sh4
        • 2.Qf4#
        • 2.Qg4#
      • 1...Se5
        • 2.Qxe5#
      • 1...Se7
        • 2.Qe5#
      • 1...f2!
    • 1.Kg7?
      • threat
        • 2.Qg6#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sh4
        • 2.Qf4#
        • 2.Qg4#
      • 1...Se5
        • 2.Qxe5#
      • 1...Se7
        • 2.Qe5#
      • 1...f2!
    • 1.Kh7?
      • threat
        • 2.Qg6#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sh4
        • 2.Qf4#
        • 2.Qg4#
      • 1...Se5
        • 2.Qxe5#
      • 1...Se7
        • 2.Qe5#
      • 1...f2!
    • 1.Rxe3+?
      • 1...Sxe3
        • 2.Qf4#
      • 1...dxe3!
  • Keys
    • 1.Kg6!
      • threat
        • 2.Qf5#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Sh4+
        • 2.Qxh4#
      • 1...Se5+
        • 2.Qxe5#
      • 1...Se7+
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,N_PINQ(B)::QAR1(B),XS(a)
    • S(a);N_GUARD::QAR1(B)
  • Tries
    • Try
      • K(C);N_SPINQ(B),P-FLIGHT
      • Threat
        • QAB(B)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(B),XS(a)
        • S(h);N_GUARD::QAR1(B),XS(h)
        • S(h);N_GUARD::QAR1(B)
      • Refutation
        • P(d);
    • Try
      • K(C);N_SPINQ(B),S_FLIGHT
      • Threat
        • QAB(B)
      • Vars
        • S(a);N_GUARD::QAR1(B),XS(a)
        • S(h);N_GUARD::QAR1(B),XS(h)
        • S(h);N_GUARD::QAR1(B)
      • Refutation
        • P(d);
    • Try
      • K(C);N_SPINQ(B),P-FLIGHT
      • Threat
        • QAB(B)
      • Vars
        • S(a);N_GUARD::QAR1(B),XS(a)
        • S(h);N_GUARD::QAR1(B),XS(h)
        • S(h);N_GUARD::QAR1(B)
      • Refutation
        • P(d);
    • Try
      • R(A);CHECK,N_SPINQ(B),XB(c)
      • Vars
        • S(a);XR(A)::QAR1(B)
      • Refutation
        • P(e);XR(A)
  • Actual
    • K(C);N_SPINQ(B),P-FLIGHT
    • Threat
      • QAB1(B)
    • Vars
      • S(a);CHECK,N_GUARD::QAR1(B),XS(a)
      • S(a);CHECK,N_GUARD::QAR(B),XS(a)
      • S(h);CHECK,N_GUARD::QAR1(B),XS(h)
      • S(h);CHECK,N_GUARD::QAR(B),XS(h)
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