MESON Chess Problem Database

Problem Display
PID: 109092 (4BBb1/6P1/1R4NP/p2k1p2/R7/1n3P2/2Pp3K/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

Themes-64, 1970

4BBb1/6P1/1R4NP/p2k1p2/R7/1n3P2/2Pp3K/8

#2

10 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Bc6#
    • 1...Bf7
      • 2.Bxf7#
    • 1...Bh7
      • 2.Bf7#
    • 1...Sd4
      • 2.c4#
    • 1...Sc5
      • 2.Rd6#
  • Tries
    • 1.Se7+?
      • 1...Ke5
        • 2.f4#
      • 1...Kc5!
    • 1.Bd6?
      • threat
        • 2.Sf4#
      • 1...f4
        • 2.Sxf4#
      • 1...Ke6!
    • 1.Rf6?
      • threat
        • 2.Bc6#
      • 1...Sd4
        • 2.c4#
      • 1...Be6!
  • Keys
    • 1.h7!
      • threat
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Bxh7
        • 2.Bf7#
      • 1...d1Q
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...d1S
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...d1B
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...d1R
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Be6
        • 2.Bc6#
      • 1...Bf7
        • 2.Bxf7#
      • 1...Sa1
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Sc1
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Sd4
        • 2.c4#
      • 1...Sc5
        • 2.Rd6#
      • 1...f4
        • 2.hxg8Q#
        • 2.hxg8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK::B(I)
    • B(f);N_GUARD::B(I),XB(f)
    • B(f);N_GUARD::B(I)
    • S(b);SBLOCK::P(A)
    • S(b);SBLOCK::R1(E)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P-FLIGHT::P(C)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • B(J);
      • Threat
        • S(F)
      • Vars
        • P(e);::S(F),XP(e)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • B(I)
      • Vars
        • S(b);SBLOCK::P(A)
      • Refutation
        • B(f);
  • Actual
    • P(G);
    • Threat
      • PXB(f)=Q
    • Vars
      • B(f);N_GUARD,XP(G)::B(I)
      • P(a);::PXB(f)=Q
      • B(f);SBLOCK::B(I)
      • B(f);N_GUARD::B(I),XB(f)
      • S(b);::PXB(f)=Q
      • S(b);SBLOCK::P(A)
      • S(b);SBLOCK::R1(E)
      • P(e);::PXB(f)=Q
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