MESON Chess Problem Database

Problem Display
PID: 78655 (1nB1n3/3N1p2/2pp1Bp1/K1N2krp/3R4/pp4P1/2q3p1/1Q2Rr2 w - - 0 1)

Dyachuk, Vasyl Vasilovich

5th Comm., The Problemist, 1992

1nB1n3/3N1p2/2pp1Bp1/K1N2krp/3R4/pp4P1/2q3p1/1Q2Rr2

#2

9 + 14

136 Problem Observer 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Qxd3#
    • 1...Qe4
      • 2.Qxe4#
    • 1...Rxe1
      • 2.Rf4#
    • 1...Rg1
      • 2.Rf4#
    • 1...Rh1
      • 2.Rf4#
    • 1...Rf4
      • 2.Rxf4#
    • 1...b2
      • 2.Qxc2#
    • 1...dxc5
      • 2.Re5#
    • 1...d5
      • 2.Re5#
  • Keys
    • 1.Se4!
      • threat
        • 2.Sxb8#
      • 1...Kg4+
        • 2.Se5#
      • 1...Ke6+
        • 2.Sdc5#
      • 1...Qd2+
        • 2.Sxd2#
      • 1...Qc3+
        • 2.Sxc3#
      • 1...Qc5+
        • 2.Sexc5#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Rxg3
        • 2.Sxg3#
      • 1...Sxd7
        • 2.Bxd7#
      • 1...Sxf6
        • 2.Sxd6#
      • 1...Qc4
        • 2.Sxd6#
      • 1...Sa6
        • 2.Sdc5#
        • 2.Se5#
        • 2.Sb6#
        • 2.Sb8#
        • 2.Sf8#
      • 1...Sc7
        • 2.Sxd6#
      • 1...Sg7
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 8
  • Sets
    • Q(b);OGATE::QAB(A),XQ(b)
    • Q(b);OGATE::QAB1(A),XQ(b)
    • R(a);N_GUARD,XR(B)::R1(D)
    • R(a);N_GUARD::R1(D)
    • R(a);N_GUARD::R1(D),XR(a)
    • P(e);N_GUARD::QAB(A),XQ(b)
    • P(j);N_GUARD,XS(F)::R1(B)
    • P(j);N_GUARD::R1(B)
  • Actual
    • S(F);N_PINQ(b)
    • Threat
      • B(I)+S(H),XS(m)
    • Vars
      • K(f);CHECK,S_FLIGHT::B(I)+S(H),DCHECK
      • Q(b);CHECK::QAB(A)+S(F),XQ(b)
      • Q(b);OGATE,P_SPINQ(b),XS(F)::QAB1(A),XQ(b)
      • R(g);XP(C)::S(F),XR(g)
      • S(m);OGATE,P_SPINS(m),XS(H)::B(I),XS(m)
      • S(n);N_GUARD,XB(G)::S(F),XP(j)
      • Q(b);::QAB(A)+S(F),DCHECK,XP(j)
      • S(n);N_GUARD::S(F),XP(j)
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