MESON Chess Problem Database

Problem Display
PID: 177733 (5BBR/5pn1/5pk1/3P3R/4NPnP/6P1/8/6K1 w - - 0 1)

Shedey, Sergey Oleksandrovich

2nd HM., Kisis JT, 1989

5BBR/5pn1/5pk1/3P3R/4NPnP/6P1/8/6K1

#2

10 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.R8h6#
    • 1...Sh2
      • 2.R8h6#
    • 1...Se3
      • 2.R8h6#
    • 1...Se5
      • 2.R8h6#
    • 1...Sh6
      • 2.R8xh6#
    • 1...Sxh5
      • 2.Bh7#
    • 1...Se6
      • 2.f5#
    • 1...Se8
      • 2.f5#
    • 1...f5
      • 2.Rg5#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Bxf7#
      • 1...Sh6
        • 2.R5xh6#
        • 2.R8xh6#
      • 1...Se5
        • 2.R5h6#
        • 2.R8h6#
      • 1...f5!
    • 1.R5h6+?
      • 1...Kf5
        • 2.Sd6#
        • 2.Bh7#
      • 1...Sxh6!
    • 1.R8h7?
      • 1...Sh6
        • 2.R7xh6#
      • 1...Sf5
        • 2.Bxf7#
      • 1...Sf2
        • 2.R7h6#
      • 1...Sh2
        • 2.R7h6#
      • 1...Se3
        • 2.R7h6#
      • 1...Se5
        • 2.R7h6#
      • 1...Se6
        • 2.Bxf7#
        • 2.f5#
      • 1...Se8
        • 2.Bxf7#
        • 2.f5#
      • 1...f5
        • 2.Rg5#
      • 1...Sxh5!
    • 1.d6?
      • 1...Sxh5
        • 2.Bh7#
      • 1...Sh6
        • 2.R8xh6#
      • 1...Sf2
        • 2.R8h6#
      • 1...Sh2
        • 2.R8h6#
      • 1...Se3
        • 2.R8h6#
      • 1...Se5
        • 2.R8h6#
      • 1...Se6
        • 2.f5#
      • 1...Se8
        • 2.f5#
      • 1...f5
        • 2.Rg5#
      • 1...Sf5!
  • Keys
    • 1.Rf5!
      • 1...Kxf5
        • 2.Bh7#
      • 1...Sxf5
        • 2.h5#
      • 1...Sf2
        • 2.Rxf6#
      • 1...Sh2
        • 2.Rxf6#
      • 1...Se3
        • 2.Rxf6#
      • 1...Se5
        • 2.Rxf6#
      • 1...Sh6
        • 2.Bh7#
      • 1...Sh5
        • 2.Bh7#
      • 1...Se6
        • 2.Bh7#
      • 1...Se8
        • 2.Bh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 7
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::R1(J)
    • S(a);N_GUARD::R1(J),XS(a)
    • S(e);SBLOCK,XR(G)::B(I)
    • S(e);N_GUARD::P(D)
    • P(b);N_GUARD::R1(G)
  • Tries
    • Try
      • S(C);
      • Threat
        • B(I),XP(d)
      • Refutation
        • P(b);
    • Try
      • R(G);CHECK
      • Refutation
        • S(a);XR(G)
    • Try
      • R(J);
      • Vars
        • S(a);N_GUARD::R1(J),XS(a)
        • S(e);::B(I),XP(d)
        • S(a);N_GUARD::R1(J)
        • P(b);N_GUARD::R1(G)
      • Refutation
        • S(e);XR(G)
    • Try
      • P(F);
      • Vars
        • S(e);SBLOCK,XR(G)::B(I)
        • S(a);N_GUARD::R1(J),XS(a)
        • S(a);N_GUARD::R1(J)
        • S(e);N_GUARD::P(D)
        • P(b);N_GUARD::R1(G)
      • Refutation
        • S(e);
  • Actual
    • R(G);
    • Vars
      • K(c);S_FLIGHT,XR(G)::B(I)
      • S(e);N_GUARD,SBLOCK,XR(G)::P(E)
      • S(a);N_GUARD::R1(G),XP(b)
      • S(a);SBLOCK::B(I)
      • S(e);::B(I)
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