MESON Chess Problem Database

Problem Display
PID: 42207 (1Kn1n3/1B1P1R2/3kpb2/7R/bP1N2r1/3N1P2/3Q4/2r5 w - - 0 1)

Soroka, Ivan Ivanovich

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

1st Prize, Baturin MT, 1984

1Kn1n3/1B1P1R2/3kpb2/7R/bP1N2r1/3N1P2/3Q4/2r5

#2

10 + 8

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.dxc8S#
    • 1...Rb1
      • 2.dxc8S#
    • 1...Rd1
      • 2.dxc8S#
    • 1...Re1
      • 2.dxc8S#
    • 1...Rf1
      • 2.dxc8S#
    • 1...Rcg1
      • 2.dxc8S#
    • 1...Rh1
      • 2.dxc8S#
    • 1...Rc5
      • 2.bxc5#
    • 1...Rc6
      • 2.dxe8S#
    • 1...Bd1
      • 2.Sb5#
      • 2.dxe8S#
    • 1...Bc2
      • 2.Sb5#
      • 2.dxc8S#
      • 2.dxe8S#
    • 1...Bb3
      • 2.Sb5#
      • 2.dxe8S#
    • 1...Bb5
      • 2.Sxb5#
    • 1...Bc6
      • 2.dxc8S#
    • 1...Sc7
      • 2.dxc8S#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Sb5#
      • 1...Bxd4
        • 2.Qxd4#
      • 1...Bg5
        • 2.Sc6#
      • 1...Bb5
        • 2.Sxb5#
      • 1...Rg5!
    • 1.Se5?
      • threat
        • 2.Sb5#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Rg5
        • 2.Sdc6#
      • 1...Bb5
        • 2.Sxb5#
      • 1...Bg5!
    • 1.d8Q+?
      • 1...Bd7
        • 2.Sb5#
        • 2.Rxd7#
        • 2.Qxd7#
      • 1...Bxd8!
    • 1.d8R+?
      • 1...Bd7
        • 2.Sb5#
        • 2.Rfxd7#
        • 2.Rdxd7#
      • 1...Bxd8!
  • Keys
    • 1.Sc6!
      • threat
        • 2.dxc8S#
        • 2.dxe8S#
      • 1...Rxc6
        • 2.dxe8S#
      • 1...Bxc6
        • 2.dxc8S#
      • 1...Rg5
        • 2.Sde5#
      • 1...Be5
        • 2.d8Q#
        • 2.d8R#
      • 1...Bg5
        • 2.Sf4#
      • 1...Be7
        • 2.Sf4#
      • 1...Se7
        • 2.d8Q#
        • 2.d8R#
      • 1...e5
        • 2.Sf4#
      • 1...Rg8
        • 2.Sde5#
        • 2.dxc8S#
      • 1...Sb6
        • 2.dxe8S#
      • 1...Sa7
        • 2.dxe8S#
      • 1...Sc7
        • 2.dxc8S#
      • 1...Sg7
        • 2.dxc8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 9
  • Sets
    • R(a);N_GUARD::PXS(g)=S
    • R(a);OGATE::P(D),XR(a)
    • R(a);S_CUTB(b)::PXS(h)=S
    • B(b);N_GUARD::S(E),XB(b)
    • B(b);S_CUTR(a)::PXS(g)=S
    • S(h);S_CUTR(a)::PXS(g)=S
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR(A)+S(E),DCHECK
      • Vars
        • B(f);OGATE,P_SPINB(f),XS(E)::QAR2(A),XB(f)
        • B(f);N_GUARD::QAR(A)+S(E)
        • B(b);::QAR(A)+S(E),DCHECK,XB(b)
      • Refutation
        • R(c);
    • Try
      • S(B);
      • Threat
        • QAR(A)+S(E),DCHECK
      • Vars
        • R(c);OGATE,P_SPINR(c),XS(E)::QAR2(A),XR(c)
        • R(c);N_GUARD::QAR(A)+S(E)
        • B(b);::QAR(A)+S(E),DCHECK,XB(b)
      • Refutation
        • B(f);
    • Try
      • P(H);CHECK
      • Refutation
        • B(f);XQ(H)
    • Try
      • P(H);CHECK
      • Refutation
        • B(f);XR(H)
  • Actual
    • S(E);
    • Threat
      • DUALS(2)
    • Vars
      • R(a);XS(E)::PXS(h)=S
      • B(b);XS(E)::PXS(g)=S
      • R(c);N_GUARD::QAR(A)+S(B)
      • B(f);N_GUARD::P=Q
      • B(f);N_GUARD::QAR(A)+S(B)
      • S(g);S_CUTB(f)::P=Q
      • P(e);S_CUTB(f)::QAR(A)+S(B)
      • S(g);::PXS(h)=S
      • S(h);::PXS(g)=S
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