MESON Chess Problem Database

Problem Display
PID: 66957 (8/3P1n2/3n1p2/3p1p2/1K1k1p1B/3P1B2/3R1P2/8 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

Vladimirov, Yakov Georgevich

Bulletin of the Central Chess Club of USSR, 1980

8/3P1n2/3n1p2/3p1p2/1K1k1p1B/3P1B2/3R1P2/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sh6
      • 2.Bxf6#
    • 1...Sd8
      • 2.Bxf6#
    • 1...Sh8
      • 2.Bxf6#
  • Tries
    • 1.d8Q?
      • 1...Ke5
        • 2.Qxf6#
      • 1...Sxd8
        • 2.Bxf6#
      • 1...Sc4
        • 2.Qxd5#
      • 1...Sb5
        • 2.Qxd5#
      • 1...Sb7
        • 2.Qxd5#
      • 1...Sc8
        • 2.Qxd5#
      • 1...Se8
        • 2.Qxd5#
      • 1...Se5
        • 2.Qb6#
      • 1...Sg5
        • 2.Qxf6#
      • 1...Sh6
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...Sh8
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...Se4!
  • Keys
    • 1.d8S!
      • threat
        • 2.Sc6#
      • 1...Ke5
        • 2.d4#
      • 1...Sxd8
        • 2.Bxf6#
      • 1...Se5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(g);N_GUARD::B(F),XP(f)
  • Tries
    • Try
      • P(G);
      • Vars
        • K(a);S_FLIGHT::QAB1(G),XP(f)
        • S(g);N_GUARD,XQ(G)::B(F),XP(f)
        • S(e);OGATE,P_SPINP(c)::QAR1(G),XP(c)
        • S(g);SBLOCK::QAB(G)
        • S(g);N_GUARD::QAB(G),XP(f)
      • Refutation
        • S(e);P_SPINP(c)
  • Actual
    • P(G);
    • Threat
      • S(G)
    • Vars
      • K(a);OGATE,S_FLIGHT::P(C)
      • S(g);N_GUARD,XS(G)::B(F),XP(f)
      • S(g);SBLOCK::S(G)
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