MESON Chess Problem Database

Problem Display
PID: 180397 (7K/p4B1N/Rb5k/6Np/4P1pP/4pPRP/1Pp5/2B5 w - - 0 1)

Lider, Valentin Viktorovich

Die Schwalbe, 1992

7K/p4B1N/Rb5k/6Np/4P1pP/4pPRP/1Pp5/2B5

#2

12 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Be8?
      • 1...gxf3
        • 2.Sf7#
      • 1...gxh3
        • 2.Sf7#
      • 1...e2!
    • 1.fxg4?
      • 1...e2
        • 2.Sf3#
      • 1...hxg4!
    • 1.hxg4?
      • 1...e2
        • 2.Sh3#
      • 1...hxg4!
  • Keys
    • 1.Se6!
      • 1...Bd4+
        • 2.Sxd4#
      • 1...gxf3
        • 2.Rg6#
      • 1...gxh3
        • 2.Rg6#
      • 1...Ba5
        • 2.Bxe3#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Bc7
        • 2.Sxc7#
      • 1...Bd8
        • 2.Sxd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(J);
      • Vars
        • P(c);XP(C)::S(H)
        • P(c);XP(E)::S(H)
      • Refutation
        • P(b);
    • Try
      • P(C);XP(c)
      • Vars
        • P(b);::B(A)+S(H)
      • Refutation
        • P(d);XP(C)
    • Try
      • P(E);XP(c)
      • Vars
        • P(b);::B(A)+S(H)
      • Refutation
        • P(d);XP(E)
  • Actual
    • S(H);N_PINB(e),P_PINP(b)
    • Vars
      • B(e);CHECK::R(I)+S(H),XB(e)
      • P(c);OGATE,XP(C)::R1(D)
      • P(c);OGATE,XP(E)::R1(D)
      • B(e);N_GUARD::B(A),XP(b)
      • B(e);::R(I)+S(H),XB(e)
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