MESON Chess Problem Database

Problem Display
PID: 7163 (1n1NkB1n/2p4N/2PRKQ1p/r2PpP1r/B2PR2b/6p1/3q4/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

3rd HM., Rudenko-60 JT, 1998-1999

1n1NkB1n/2p4N/2PRKQ1p/r2PpP1r/B2PR2b/6p1/3q4/8

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Qe7#
    • 1...Sxc6
      • 2.Bxc6#
    • 1...Sd7
      • 2.cxd7#
    • 1...Sg6
      • 2.Qxg6#
      • 2.Qf7#
    • 1...Sf7
      • 2.Qxf7#
  • Tries
    • 1.Be7?
      • threat
        • 2.Qxh8#
        • 2.Qf8#
      • 1...Bxf6
        • 2.Sxf6#
      • 1...Qg5
        • 2.Qf8#
      • 1...Rg5
        • 2.Qf8#
      • 1...Sd7
        • 2.cxd7#
      • 1...Sg6
        • 2.Qxg6#
        • 2.Qf7#
      • 1...Sf7
        • 2.Qxf7#
      • 1...Rxf5!
    • 1.Bg7?
      • threat
        • 2.Qf8#
      • 1...Bxf6
        • 2.Sxf6#
      • 1...Sd7
        • 2.cxd7#
      • 1...Sg6
        • 2.Qxg6#
        • 2.Qf7#
      • 1...Sf7
        • 2.Qxf7#
      • 1...Rxf5!
    • 1.Rxh4?
      • threat
        • 2.Qe7#
      • 1...Sg6
        • 2.Qxg6#
        • 2.Qf7#
      • 1...Qg5!
    • 1.Qg6+?
      • 1...Sf7
        • 2.Qxf7#
      • 1...Sxg6!
  • Keys
    • 1.Kxe5!
      • threat
        • 2.Re6#
      • 1...Qf4+
        • 2.Kxf4#
      • 1...Qxd4+
        • 2.Kxd4#
      • 1...Rxd5+
        • 2.Kxd5#
      • 1...Rxf5+
        • 2.Kxf5#
      • 1...Bxf6+
        • 2.Kxf6#
      • 1...Sxc6+
        • 2.Bxc6#
      • 1...Sd7+
        • 2.cxd7#
      • 1...Sg6+
        • 2.Qxg6#
      • 1...Sf7+
        • 2.Qxf7#
      • 1...cxd6+
        • 2.Kxd6#
      • 1...Qb4
        • 2.Kf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • R(f);S_CUTB(c)::QAR1(I)
    • S(i);OGATE,P_SPINS(i),XP(F)::B(A),XS(i)
    • S(i);OGATE::P(F),XS(i)
    • S(k);N_GUARD::QAB1(I),XS(k)
  • Tries
    • Try
      • B(L);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);XQ(I)::S(J),XB(c)
        • Q(a);::QAR1(I)
        • R(f);::QAR1(I)
        • S(i);OGATE::P(F),XS(i)
        • S(k);N_GUARD::QAB1(I),XS(k)
      • Refutation
        • R(f);XP(E)
    • Try
      • B(L);
      • Threat
        • QAR1(I)
      • Vars
        • B(c);XQ(I)::S(J),XB(c)
        • S(i);OGATE::P(F),XS(i)
        • S(k);N_GUARD::QAB1(I),XS(k)
      • Refutation
        • R(f);XP(E)
    • Try
      • R(C);XB(c)
      • Threat
        • QAR1(I)
      • Refutation
        • Q(a);
    • Try
      • Q(I);CHECK
      • Vars
        • S(k);N_GUARD,P_SPINS(k)::QAB1(I),XS(k)
      • Refutation
        • S(k);XQ(I)
  • Actual
    • K(H);P-FLIGHT,P_SPINP(D),XP(e)
    • Threat
      • R(G)
    • Vars
      • Q(a);CHECK::R(C)+K(H),XQ(a)
      • Q(a);CHECK,XP(B)::R(C)+K(H),XQ(a)
      • R(d);CHECK,P_PINP(E),XP(D)::R(C)+K(H),XR(d)
      • R(f);CHECK,XP(E)::R(C)+K(H),XR(f)
      • B(c);CHECK,XQ(I)::R(C)+K(H),XB(c)
      • S(i);CHECK,OGATE,P_SPINS(i),XP(F)::B(A),XS(i)
      • S(i);CHECK,OGATE::P(F),XS(i)
      • S(k);CHECK,N_GUARD::QAB(I),XS(k)
      • S(k);CHECK,N_GUARD::QAB1(I),XS(k)
      • P(h);CHECK,XR(G)::R(C)+K(H),XP(h)
      • Q(a);::R(C)+K(H)
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