MESON Chess Problem Database

Problem Display
PID: 238529 (5n2/4KP2/6p1/3pk2p/R3N2N/2R1P3/3PbB2/4b3 w - - 0 1)

Gross, Erwin

Schweizerische Schachzeitung, 1989

5n2/4KP2/6p1/3pk2p/R3N2N/2R1P3/3PbB2/4b3

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd2
      • 2.Bg3#
    • 1...dxe4
      • 2.Rc5#
  • Tries
    • 1.Sg3?
      • threat
        • 2.d4#
      • 1...d4
        • 2.Rc5#
      • 1...Bd3
        • 2.Sf3#
      • 1...Se6
        • 2.Sxg6#
      • 1...Bxd2!
    • 1.Sc5?
      • threat
        • 2.d4#
      • 1...Bxd2
        • 2.Bg3#
      • 1...Bd3
        • 2.Sxd3#
      • 1...Se6
        • 2.Sd7#
      • 1...d4!
    • 1.Sg5?
      • threat
        • 2.d4#
      • 1...Bxd2
        • 2.Bg3#
      • 1...d4
        • 2.Rc5#
      • 1...Bd3
        • 2.Sgf3#
      • 1...Se6!
    • 1.Sf6?
      • threat
        • 2.d4#
      • 1...Bxd2
        • 2.Bg3#
      • 1...Se6
        • 2.Sd7#
      • 1...d4
        • 2.Rc5#
      • 1...Bd3!
    • 1.Sf3+?
      • 1...Kf5
        • 2.Sg3#
        • 2.Sd6#
      • 1...Bxf3!
  • Keys
    • 1.Sd6!
      • threat
        • 2.d4#
      • 1...Bxd2
        • 2.Bg3#
      • 1...d4
        • 2.Rc5#
      • 1...Bd3
        • 2.Sf3#
      • 1...Se6
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD,XP(A)::B(B)
    • P(c);OGATEB,XS(F)::R(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • P(A)
      • Vars
        • P(c);OGATEB::R(C)
        • B(b);N_GUARD::S(G)
        • S(g);N_GUARD::S(G),XP(f)
      • Refutation
        • B(a);XP(A)
    • Try
      • S(F);
      • Threat
        • P(A)
      • Vars
        • B(a);N_GUARD,XP(A)::B(B)
        • B(b);N_GUARD::S(F),XB(b)
        • S(g);N_GUARD::S(F)
      • Refutation
        • P(c);
    • Try
      • S(F);
      • Threat
        • P(A)
      • Vars
        • B(a);N_GUARD,XP(A)::B(B)
        • P(c);OGATEB::R(C)
        • B(b);N_GUARD::S(F)
      • Refutation
        • S(g);
    • Try
      • S(F);
      • Threat
        • P(A)
      • Vars
        • B(a);N_GUARD,XP(A)::B(B)
        • S(g);N_GUARD::S(F)
        • P(c);OGATEB::R(C)
      • Refutation
        • B(b);
    • Try
      • S(G);CHECK
      • Refutation
        • B(b);XS(G)
  • Actual
    • S(F);
    • Threat
      • P(A)
    • Vars
      • B(a);N_GUARD,XP(A)::B(B)
      • P(c);OGATEB::R(C)
      • B(b);N_GUARD::S(G)
      • S(g);N_GUARD::S(G),XP(f)
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