MESON Chess Problem Database

Problem Display
PID: 235229 (7n/7K/R7/5Nk1/Rp4P1/b1p3P1/2rP4/B2B4 w - - 0 1)

Heyl, Peter

Freie Presse, 2007

7n/7K/R7/5Nk1/Rp4P1/b1p3P1/2rP4/B2B4

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sg6
      • 2.Rxg6#
    • 1...Sf7
      • 2.Rg6#
    • 1...cxd2
      • 2.Bf6#
  • Tries
    • 1.Sh4?
      • threat
        • 2.R4a5#
      • 1...cxd2
        • 2.Bf6#
      • 1...Sg6
        • 2.Rxg6#
      • 1...Sf7
        • 2.Rg6#
      • 1...b3
        • 2.Sf3#
      • 1...Rxd2!
    • 1.R4a5?
      • threat
        • 2.Se3#
        • 2.Sd4#
        • 2.Sh4#
        • 2.Sh6#
        • 2.Se7#
        • 2.Sg7#
      • 1...Rxd2
        • 2.Sd4#
      • 1...cxd2
        • 2.Bf6#
      • 1...Sg6
        • 2.Rxg6#
      • 1...Sf7
        • 2.Rg6#
      • 1...b3!
  • Keys
    • 1.Sd4!
      • threat
        • 2.R4a5#
      • 1...cxd2
        • 2.Se6#
      • 1...Sg6
        • 2.Rxg6#
      • 1...Sf7
        • 2.Rg6#
      • 1...b3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::R1(H),XS(f)
    • S(f);N_GUARD::R1(H)
    • P(c);OGATE,XP(C)::B(A)
  • Tries
    • Try
      • S(G);
      • Threat
        • R(E)
      • Vars
        • P(c);OGATE,XP(C)::B(A)
        • S(f);N_GUARD::R1(H),XS(f)
        • S(f);N_GUARD::R1(H)
        • P(d);::S(G)
      • Refutation
        • R(a);XP(C)
    • Try
      • R(E);
      • Threat
        • DUALS(6)
      • Vars
        • R(a);XP(C)::R(E)+S(G)
        • P(c);OGATE,XP(C)::B(A)
        • S(f);N_GUARD::R1(H),XS(f)
        • S(f);N_GUARD::R1(H)
      • Refutation
        • P(d);
  • Actual
    • S(G);
    • Threat
      • R(E)
    • Vars
      • P(c);XP(C)::S(G)
      • S(f);N_GUARD::R1(H),XS(f)
      • S(f);N_GUARD::R1(H)
      • P(d);::S(G)
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