MESON Chess Problem Database

Problem Display
PID: 143533 (3n2q1/1npp4/b1pk1P2/pr1N1R2/8/NB2R3/1B6/1KQ5 w - - 0 1)

Forster, Klaus

Die Schwalbe, 2011

3n2q1/1npp4/b1pk1P2/pr1N1R2/8/NB2R3/1B6/1KQ5

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Sc4#
    • 1...Se6
      • 2.Be5#
  • Tries
    • 1.Sxb5+?
      • 1...cxb5
        • 2.Qxc7#
      • 1...Bxb5!
  • Keys
    • 1.Se7!
      • threat
        • 2.Sc8#
      • 1...Sc5
        • 2.Be5#
      • 1...Se6
        • 2.Sc4#
      • 1...Sf7
        • 2.Sc4#
      • 1...c5
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(f);SBLOCK::S(D)
    • S(i);SBLOCK::B(C)
  • Tries
    • Try
      • S(D);CHECK,XR(b)
      • Vars
        • P(d);OGATE,XS(D)::QAB1(B),XP(g)
      • Refutation
        • B(c);XS(D)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • S(f);S_CUTR(b)::B(C)
      • S(i);S_CUTQ(j)::S(D)
      • P(d);S_CUTR(b)::B(C)
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