MESON Chess Problem Database

Problem Display
PID: 244797 (1N6/4p3/b1R1N1p1/r2k1pK1/2nP1B2/3P4/6P1/1Q6 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Themes-64, 1980

1N6/4p3/b1R1N1p1/r2k1pK1/2nP1B2/3P4/6P1/1Q6

#2

9 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.dxc4#
    • 1...Bb7
      • 2.dxc4#
    • 1...Bc8
      • 2.dxc4#
  • Tries
    • 1.Be3?
      • threat
        • 2.Sf4#
        • 2.Sc7#
      • 1...f4
        • 2.Sxf4#
        • 2.Sc7#
      • 1...Sxe3!
    • 1.Be5?
      • threat
        • 2.Sf4#
        • 2.Sc7#
      • 1...f4
        • 2.Sxf4#
        • 2.Sc7#
      • 1...Sxe5!
    • 1.Qe1?
      • 1...Ra1
        • 2.Rc5#
      • 1...Ra2
        • 2.Rc5#
      • 1...Ra3
        • 2.Rc5#
      • 1...Ra4
        • 2.Rc5#
      • 1...Rb5
        • 2.dxc4#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Bb5
        • 2.Rc5#
      • 1...Bb7
        • 2.dxc4#
      • 1...Bc8
        • 2.dxc4#
      • 1...Sb2
        • 2.Qe5#
      • 1...Sd2
        • 2.Qe5#
      • 1...Sa3
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sb6
        • 2.Qe5#
      • 1...Sd6
        • 2.Qe5#
      • 1...Se3!
    • 1.Qb6?
      • threat
        • 2.Sc7#
      • 1...Rc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Sxb6!
  • Keys
    • 1.Qb4!
      • 1...Sd6
        • 2.Sc7#
      • 1...Ra1
        • 2.Qc5#
      • 1...Ra2
        • 2.Qc5#
      • 1...Ra3
        • 2.Qc5#
      • 1...Ra4
        • 2.Qc5#
      • 1...Rb5
        • 2.Qxc4#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Bb5
        • 2.Qc5#
      • 1...Bb7
        • 2.Qxc4#
      • 1...Bc8
        • 2.Qxc4#
      • 1...Sb2
        • 2.Sc7#
      • 1...Sd2
        • 2.Sc7#
      • 1...Sa3
        • 2.Sc7#
      • 1...Se3
        • 2.Sc7#
      • 1...Se5
        • 2.Sc7#
      • 1...Sb6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • R(b);S_CUTB(e)::P(C),XS(a)
    • B(e);N_GUARD::P(C),XS(a)
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Refutation
        • S(a);XB(E)
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Refutation
        • S(a);XB(E)
    • Try
      • Q(A);
      • Vars
        • R(b);N_GUARD::R1(G)
        • R(b);S_CUTB(e)::P(C),XS(a)
        • R(b);N_GUARD::R1(G),XR(b)
        • B(e);S_CUTR(b)::R1(G)
        • B(e);N_GUARD::P(C),XS(a)
        • S(a);N_GUARD::QAR1(A)
        • S(a);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • S(H)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • S(a);::S(H)
      • R(b);N_GUARD::QAR1(A)
      • R(b);S_CUTB(e)::QAB1(A),XS(a)
      • R(b);N_GUARD::QAR1(A),XR(b)
      • B(e);S_CUTR(b)::QAR1(A)
      • B(e);N_GUARD::QAB1(A),XS(a)
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