MESON Chess Problem Database

Problem Display
PID: 60908 (8/1Q1K4/2p5/3R1n2/1BP1k3/5R2/4P3/8 w - - 0 1)

Chernyavsky, Mykola Vasilovich

Dyachuk, Vasyl Vasilovich

1st HM., Chervoni Girnik, 1998

8/1Q1K4/2p5/3R1n2/1BP1k3/5R2/4P3/8

#2

7 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...cxd5
      • 2.Qxd5#
  • Tries
    • 1.Bd2?
      • threat
        • 2.Rf4#
        • 2.Qb1#
      • 1...cxd5
        • 2.Qxd5#
      • 1...Sd4
        • 2.Rf4#
      • 1...Se3!
    • 1.Bc3?
      • threat
        • 2.Re5#
        • 2.Qb1#
      • 1...cxd5
        • 2.Qxd5#
        • 2.Qb1#
      • 1...Se3
        • 2.Re5#
      • 1...Sd4!
    • 1.Qb6?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Se3
        • 2.Qxe3#
        • 2.Qd4#
      • 1...Sg3
        • 2.Qe3#
        • 2.Qd4#
      • 1...Sh4
        • 2.Qe3#
        • 2.Qd4#
      • 1...Sd6
        • 2.Qe3#
        • 2.Qd4#
      • 1...Sh6
        • 2.Qe3#
        • 2.Qd4#
      • 1...Se7
        • 2.Qe3#
        • 2.Qd4#
      • 1...Sg7
        • 2.Qe3#
        • 2.Qd4#
      • 1...c5
        • 2.Qe6#
      • 1...cxd5!
    • 1.Qc7?
      • threat
        • 2.Qf4#
        • 2.Qe5#
      • 1...cxd5
        • 2.Qf4#
      • 1...Sd6!
    • 1.Qb8?
      • threat
        • 2.Qf4#
        • 2.Qe5#
      • 1...cxd5
        • 2.Qf4#
      • 1...Sd6!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qb1#
      • 1...cxd5
        • 2.Qxd5#
      • 1...Sd4
        • 2.Re5#
      • 1...Se3
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE,P_SPINP(c),XR(E)::QAB1(F),XP(c)
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATE,P_SPINP(c),XR(E)::QAB1(F),XP(c)
        • S(b);::R1(B)
      • Refutation
        • S(b);
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::R1(E)
      • Refutation
        • S(b);
    • Try
      • Q(F);
      • Vars
        • S(b);N_GUARD::QAR1(F),XS(b)
        • P(c);OGATE::QAR2(F)
      • Refutation
        • P(c);XR(E)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XR(E)::QAR1(F)
      • Refutation
        • S(b);
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XR(E)::QAR1(F)
      • Refutation
        • S(b);
  • Actual
    • B(C);
    • Threat
      • QAB(F)
    • Vars
      • P(c);OGATE,P_SPINP(c),XR(E)::QAB1(F),XP(c)
      • S(b);SBLOCK::R1(E)
      • S(b);SBLOCK::R1(B)
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