MESON Chess Problem Database

Problem Display
PID: 50675 (8/B1n2R2/2N4p/R3P1p1/1b1NkP2/6pP/B2PP3/nK6 w - - 0 1)

Rossomakho, Yakov V

1/2 HM., Vecherni Petersburg, 1995

8/B1n2R2/2N4p/R3P1p1/1b1NkP2/6pP/B2PP3/nK6

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Bxd5#
    • 1...Sa6
      • 2.Bd5#
    • 1...Se6
      • 2.Bd5#
    • 1...Sa8
      • 2.Bd5#
    • 1...Se8
      • 2.Bd5#
  • Tries
    • 1.Sb3?
      • threat
        • 2.d3#
      • 1...Bxd2
        • 2.Sxd2#
      • 1...Bxa5
        • 2.Sc5#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Sb5!
    • 1.Sf3?
      • threat
        • 2.d3#
      • 1...Bxd2
        • 2.Sxd2#
      • 1...Bc5!
    • 1.Sb5?
      • threat
        • 2.d3#
      • 1...Bxd2
        • 2.Sd6#
      • 1...Bc5
        • 2.Sc3#
      • 1...Sb3!
    • 1.Se6?
      • threat
        • 2.d3#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Bxd2!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sxg3#
      • 1...Kxf4
        • 2.Sd6#
      • 1...gxf4
        • 2.d3#
      • 1...g2
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • S(g);N_GUARD::B(B),XS(g)
    • S(g);N_GUARD::B(B)
  • Tries
    • Try
      • S(F);
      • Threat
        • P(C)
      • Vars
        • B(c);XP(C)::S(F),XB(c)
        • B(c);N_GUARD,XR(H)::S(F)
        • B(c);N_GUARD::S(F),XB(c)
      • Refutation
        • S(g);
    • Try
      • S(F);
      • Threat
        • P(C)
      • Vars
        • B(c);XP(C)::S(F),XB(c)
      • Refutation
        • B(c);
    • Try
      • S(F);
      • Threat
        • P(C)
      • Vars
        • B(c);N_GUARD,XP(C)::S(F)
        • B(c);N_GUARD::S(F)
      • Refutation
        • S(a);
    • Try
      • S(F);
      • Threat
        • P(C)
      • Vars
        • B(c);N_GUARD::S(F),XB(c)
      • Refutation
        • B(c);XP(C)
  • Actual
    • S(F);
    • Threat
      • S(F),XP(b)
    • Vars
      • K(d);P-FLIGHT,XP(G)::R(L)+S(F)
      • P(e);SBLOCK,XP(G)::P(C)
      • P(b);::S(F)
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