MESON Chess Problem Database

Problem Display
PID: 252830 (8/6K1/3RP3/4Pkpp/4N1n1/6PP/B1Q1q3/B3Rb2 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Comm., Schach, 1994

8/6K1/3RP3/4Pkpp/4N1n1/6PP/B1Q1q3/B3Rb2

#2

11 + 6

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Qxe4#
  • Tries
    • 1.Sd2+?
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qd3!
    • 1.Rdd1?
      • threat
        • 2.Sd6#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qc4!
    • 1.Rd2?
      • threat
        • 2.Sd6#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qc4!
    • 1.Ra6?
      • threat
        • 2.Sd6#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qc4!
    • 1.Rb6?
      • threat
        • 2.Sd6#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qc4!
    • 1.Rc6?
      • threat
        • 2.Sd6#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qc4!
    • 1.Rd7?
      • threat
        • 2.Sd6#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qc4!
    • 1.Rd8?
      • threat
        • 2.Sd6#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qc4!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Sd6#
      • 1...Kxe4
        • 2.Ra3#
      • 1...Qxe4
        • 2.Rf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(b);OGATE,P_SPINQ(b),XS(G)::QAB1(D),XQ(b)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAB1(D),XQ(b)
      • Refutation
        • Q(b);P_SPINQ(b)
    • Try
      • R(I);
      • Threat
        • QAB(D)+S(G),DCHECK
      • Vars
        • Q(b);OGATE,P_SPINQ(b),XS(G)::QAB1(D),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • R(I);
      • Threat
        • QAB(D)+S(G),DCHECK
      • Vars
        • Q(b);OGATE,P_SPINQ(b),XS(G)::QAB1(D),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • R(I);
      • Threat
        • QAB(D)+S(G),DCHECK
      • Vars
        • Q(b);OGATE,P_SPINQ(b),XS(G)::QAB1(D),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • R(I);
      • Threat
        • QAB(D)+S(G),DCHECK
      • Vars
        • Q(b);OGATE,P_SPINQ(b),XS(G)::QAB1(D),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • R(I);
      • Threat
        • QAB(D)+S(G),DCHECK
      • Vars
        • Q(b);OGATE,P_SPINQ(b),XS(G)::QAB1(D),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • R(I);
      • Threat
        • QAB(D)+S(G),DCHECK
      • Vars
        • Q(b);OGATE,P_SPINQ(b),XS(G)::QAB1(D),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • R(I);
      • Threat
        • QAB(D)+S(G),DCHECK
      • Vars
        • Q(b);OGATE,P_SPINQ(b),XS(G)::QAB1(D),XQ(b)
      • Refutation
        • Q(b);
  • Actual
    • R(I);
    • Threat
      • S(G)
    • Vars
      • K(d);OGATEB,P_SPINQ(b),S_FLIGHT,XS(G)::QAB(D)+R(I)
      • Q(b);N_GUARD,XS(G)::R(I)
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