MESON Chess Problem Database

Problem Display
PID: 240231 (b7/K2NR3/4pp2/N1Bk1p2/3pnP2/P7/qRp1Q1n1/7B w - - 0 1)

Dyachuk, Vasyl Vasilovich

Problem-Forum, 2006

b7/K2NR3/4pp2/N1Bk1p2/3pnP2/P7/qRp1Q1n1/7B

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qc4#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qa1
      • 2.Qc4#
    • 1...Qxb2
      • 2.Qc4#
    • 1...Qxa3
      • 2.Qc4#
    • 1...Sd2
      • 2.Qxe6#
    • 1...Sf2
      • 2.Qxe6#
    • 1...Sc3
      • 2.Qxe6#
    • 1...Sg3
      • 2.Qxe6#
    • 1...Sd6
      • 2.Qxe6#
    • 1...d3
      • 2.Qxd3#
  • Tries
    • 1.Sxf6+?
      • 1...Sxf6
        • 2.Qe5#
      • 1...Kxc5!
    • 1.Bb4?
      • threat
        • 2.Sb6#
      • 1...Sxf4
        • 2.Qb5#
      • 1...d3
        • 2.Qxd3#
      • 1...Sc5!
    • 1.Qb5?
      • threat
        • 2.Sb6#
      • 1...Sxf4
        • 2.Bb4#
      • 1...Sd2
        • 2.Sxf6#
      • 1...Sf2
        • 2.Sxf6#
      • 1...Sc3
        • 2.Sxf6#
      • 1...Sg3
        • 2.Sxf6#
      • 1...Sg5
        • 2.Sxf6#
      • 1...Sd6
        • 2.Sxf6#
      • 1...Sxc5!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Sb6#
      • 1...Sxf4
        • 2.Bb4#
      • 1...Sxc5
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • Q(a);N_GUARD::QAB1(C)
    • Q(a);N_GUARD::QAB1(C),XQ(a)
    • Q(a);N_GUARD,XR(B)::QAB1(C)
    • Q(a);N_GUARD,P_PINS(F),XP(D)::QAB1(C)
    • S(e);OGATE,P_SPINS(c)::QAB1(C),XP(h)
    • P(d);OGATEB::QAR2(C),XP(d)
  • Tries
    • Try
      • S(I);CHECK,XP(i)
      • Vars
        • S(e);OGATE,P_SPINS(c),XS(I)::QAR1(C)
      • Refutation
        • K(f);P-FLIGHT,XB(G)
    • Try
      • B(G);
      • Threat
        • S(I)
      • Vars
        • S(c);P_SPINS(e),XP(E)::QAR2(C)
        • P(d);OGATEB::QAR2(C),XP(d)
      • Refutation
        • S(e);P_SPINS(c)
    • Try
      • Q(C);
      • Threat
        • S(I)
      • Vars
        • S(c);P_SPINS(e),XP(E)::QAR(C)+B(G)
        • S(e);N_GUARD,P_SPINS(c)::S(I),XP(i)
      • Refutation
        • S(e);P_SPINS(c),XB(G)
  • Actual
    • R(B);
    • Threat
      • S(I)
    • Vars
      • S(c);P_SPINS(e),XP(E)::R(B)+B(G)
      • S(e);OGATE,P_SPINS(c),XB(G)::QAB1(C),XP(h)
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