MESON Chess Problem Database

Problem Display
PID: 163894 (2n5/3p2Q1/2Bp2Np/1Np3p1/6pP/3pkp2/8/4BK2 w - - 0 1)

Syzonenko, Viktor N

4th Comm., Novi Temi, 1974-1975

2n5/3p2Q1/2Bp2Np/1Np3p1/6pP/3pkp2/8/4BK2

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Qe7#
    • 1...Sa7
      • 2.Qe7#
    • 1...Se7
      • 2.Qxe7#
    • 1...d2
      • 2.Qc3#
    • 1...c4
      • 2.Qd4#
    • 1...gxh4
      • 2.Qxh6#
    • 1...d5
      • 2.Qe5#
  • Tries
    • 1.Sxd6?
      • threat
        • 2.Sc4#
        • 2.Sf5#
        • 2.Qe5#
      • 1...dxc6
        • 2.Qe5#
      • 1...d2
        • 2.Qc3#
      • 1...Sb6
        • 2.Sf5#
        • 2.Qe5#
      • 1...Se7
        • 2.Sc4#
        • 2.Qe5#
      • 1...c4
        • 2.Sxc4#
        • 2.Sf5#
        • 2.Qe5#
      • 1...Sxd6!
    • 1.Qb2?
      • threat
        • 2.Bd2#
        • 2.Bf2#
        • 2.Qd2#
        • 2.Qf2#
      • 1...d2
        • 2.Qa3#
        • 2.Qc3#
        • 2.Qxd2#
        • 2.Qb3#
      • 1...d5
        • 2.Qe5#
      • 1...f2
        • 2.Bd2#
        • 2.Bxf2#
        • 2.Qd2#
        • 2.Qxf2#
      • 1...g3
        • 2.Bd2#
        • 2.Qd2#
      • 1...dxc6!
    • 1.Qc3?
      • threat
        • 2.Bd2#
        • 2.Bf2#
        • 2.Qd2#
      • 1...d5
        • 2.Qe5#
      • 1...f2
        • 2.Bd2#
        • 2.Bxf2#
        • 2.Qd2#
      • 1...g3
        • 2.Bd2#
        • 2.Qd2#
      • 1...dxc6!
  • Keys
    • 1.Qf6!
      • 1...gxh4
        • 2.Qf4#
      • 1...dxc6
        • 2.Qe6#
      • 1...d2
        • 2.Qc3#
      • 1...d5
        • 2.Qe5#
      • 1...f2
        • 2.Qxf2#
      • 1...Sb6
        • 2.Qe7#
      • 1...Sa7
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#
      • 1...g3
        • 2.Qxf3#
      • 1...c4
        • 2.Qd4#
      • 1...h5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(j);N_GUARD::QAR(G)
    • S(j);N_GUARD::QAR(G),XS(j)
    • P(a);OGATEB::QAR2(G)
    • P(e);N_GUARD::QAB1(G)
    • P(f);OGATEB,XP(C)::QAB(G),XP(h)
    • P(g);N_GUARD::QAR2(G)
  • Tries
    • Try
      • S(D);XP(g)
      • Threat
        • DUALS(3)
      • Vars
        • P(i);XB(E)::QAR2(G)
        • P(a);OGATEB::QAR2(G)
      • Refutation
        • S(j);XS(D)
    • Try
      • Q(G);
      • Threat
        • DUALS(4)
      • Vars
        • P(g);N_GUARD::QAR2(G)
      • Refutation
        • P(i);XB(E)
    • Try
      • Q(G);P_PINP(a)
      • Threat
        • DUALS(3)
      • Vars
        • P(g);N_GUARD::QAR2(G)
      • Refutation
        • P(i);XB(E)
  • Actual
    • Q(G);
    • Vars
      • P(f);N_GUARD,XP(C)::QAB1(G)
      • P(i);N_GUARD,XB(E)::QAR(G)
      • P(a);OGATEB::QAR2(G)
      • P(g);N_GUARD::QAR2(G)
      • P(c);OGATE::QAB1(G),XP(c)
      • S(j);N_GUARD::QAR(G)
      • S(j);N_GUARD::QAR(G),XS(j)
      • P(d);N_GUARD::QAR1(G),XP(c)
      • P(e);N_GUARD::QAB1(G)
      • P(h);N_GUARD::QAB(G),XP(f)
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