MESON Chess Problem Database

Problem Display
PID: 69156 (2b5/7Q/1N1n1b2/2R3p1/3p1k1p/8/3PnNPK/4R3 w - - 0 1)

Maeder, Thomas

Die Schwalbe, 1987

2b5/7Q/1N1n1b2/2R3p1/3p1k1p/8/3PnNPK/4R3

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Sd5#
    • 1...Bg4
      • 2.Sd3#
    • 1...Sc1
      • 2.Sd5#
    • 1...Sg1
      • 2.Sd5#
    • 1...Sg3
      • 2.Sd5#
    • 1...Sc4
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sb5
      • 2.Qe4#
    • 1...Sb7
      • 2.Qe4#
    • 1...Sf7
      • 2.Qe4#
    • 1...Se8
      • 2.Qe4#
    • 1...g4
      • 2.Sd3#
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qf3#
      • 1...Bg4
        • 2.Qxg4#
      • 1...Bb7
        • 2.Qg4#
      • 1...Sg1
        • 2.Sd3#
      • 1...g4
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • B(g);SBLOCK::S(G)
    • B(h);SBLOCK::S(C)
    • S(a);::S(G)
    • S(f);N_GUARD::QAR1(H)
    • S(f);N_GUARD::QAR1(H),XS(f)
    • P(e);SBLOCK::S(C)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • B(h);N_GUARD::QAR1(H),XB(h)
      • B(h);N_GUARD::QAR1(H)
      • S(a);::S(C)
      • P(e);::S(G)
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