MESON Chess Problem Database

Problem Display
PID: 19346 (5QN1/1NKp4/1P2P2R/1B1kP3/2R2P2/q2rP3/2n5/7b w - - 0 1)

Dombrovskis, Alfreds A

Zagoruyko, Leonid Ivanovich

2nd Place, Uzbekistan Committee for Physiculture &, 1955

5QN1/1NKp4/1P2P2R/1B1kP3/2R2P2/q2rP3/2n5/7b

#2

12 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...Qb2
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...Qc5+
      • 2.Qxc5#
    • 1...Qd6+
      • 2.Qxd6#
    • 1...Qe7
      • 2.Sxe7#
    • 1...Qa1
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...Qa2
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...Qb3
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...Qc3
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...Qa4
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...Qa5
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...Qa6
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...Qa7
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...Qa8
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...Sb4
      • 2.Se7#
      • 2.Qc5#
      • 2.Qd6#
    • 1...dxe6
      • 2.Sf6#
    • 1...d6
      • 2.Se7#
  • Tries
    • 1.Kxd7?
      • threat
        • 2.Sf6#
      • 1...Qd6+
        • 2.Qxd6#
      • 1...Qe7+
        • 2.Sxe7#
      • 1...Qxf8!
    • 1.Sc5?
      • threat
        • 2.Sf6#
        • 2.Se7#
        • 2.Qd6#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...d6
        • 2.Sf6#
        • 2.Se7#
        • 2.Qxd6#
      • 1...Qa7+!
    • 1.Qf5?
      • threat
        • 2.Sf6#
      • 1...Qc5+
        • 2.Rxc5#
      • 1...Qd6+
        • 2.exd6#
      • 1...Qe7
        • 2.Sxe7#
      • 1...Qf8!
    • 1.Qa8?
      • threat
        • 2.Sa5#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Qd6+
        • 2.Sxd6#
      • 1...Qxa8
        • 2.Se7#
      • 1...Qf8
        • 2.Sd8#
      • 1...Qa5
        • 2.Sxa5#
        • 2.Se7#
      • 1...Qa6
        • 2.Se7#
      • 1...Qa7
        • 2.Se7#
      • 1...Sb4
        • 2.Se7#
      • 1...Sd4!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Sf6#
      • 1...Qc5+
        • 2.Qxc5#
      • 1...Qd6+
        • 2.Qxd6#
      • 1...Qxe7
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(c);CHECK,N_GUARD::QAR1(K),XQ(c)
    • Q(c);N_GUARD::S(L),XQ(c)
    • P(f);SBLOCK,XP(G)::S(L)
    • P(f);S_CUTQ(c)::S(L)
  • Tries
    • Try
      • K(J);P-FLIGHT,XP(f)
      • Threat
        • S(L)
      • Vars
        • Q(c);CHECK,N_GUARD::QAR1(K),XQ(c)
        • Q(c);CHECK,N_GUARD::S(L),XQ(c)
      • Refutation
        • Q(c);XQ(K)
    • Try
      • S(I);
      • Threat
        • DUALS(3)
      • Vars
        • Q(c);CHECK,OGATE,XS(I)::QAR1(K),XQ(c)
      • Refutation
        • Q(c);CHECK
    • Try
      • Q(K);
      • Threat
        • S(L)
      • Vars
        • Q(c);CHECK,N_GUARD::R1(B),XQ(c)
        • Q(c);CHECK,OGATE::QAR(K)+P(E),XQ(c)
        • Q(c);N_GUARD::S(L),XQ(c)
      • Refutation
        • Q(c);
    • Try
      • Q(K);
      • Threat
        • QAB(K)+S(I)
      • Vars
        • Q(c);CHECK,N_GUARD::QAB(K)+S(I),XQ(c)
        • Q(c);N_GUARD,XQ(K)::S(L)
        • Q(c);N_GUARD::QAB(K)+S(I)
        • Q(c);N_GUARD::S(L)
        • Q(c);N_GUARD,P_PINS(I)::S(L)
        • S(b);S_CUTQ(c)::S(L)
      • Refutation
        • S(b);
  • Actual
    • Q(K);
    • Threat
      • S(L)
    • Vars
      • Q(c);CHECK,N_GUARD::QAR1(K),XQ(c)
      • Q(c);XQ(K)::S(L),XQ(c)
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