MESON Chess Problem Database

Problem Display
PID: 82326 (2n5/8/4p3/1bN4R/1Pkp2p1/KpP5/p1r1P1r1/B1R1nQ1B w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach-Report/Deutsche Schachblatter, 1990

2n5/8/4p3/1bN4R/1Pkp2p1/KpP5/p1r1P1r1/B1R1nQ1B

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.exd3#
    • 1...dxc3
      • 2.Qf4#
    • 1...d3
      • 2.Qf4#
    • 1...e5
      • 2.Qf7#
  • Tries
    • 1.Sa4?
      • threat
        • 2.Rc5#
      • 1...Rcxe2
        • 2.Sb2#
      • 1...dxc3
        • 2.Qf4#
      • 1...e5
        • 2.Qf7#
      • 1...Sd3
        • 2.exd3#
      • 1...Rgxe2!
    • 1.Sd7?
      • threat
        • 2.Rc5#
      • 1...Rgxe2
        • 2.Se5#
      • 1...dxc3
        • 2.Qf4#
      • 1...e5
        • 2.Qf7#
      • 1...Sd3
        • 2.exd3#
      • 1...Rcxe2!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Rc5#
      • 1...Rcxe2
        • 2.Sb2#
      • 1...Rgxe2
        • 2.Se5#
      • 1...Sxd3
        • 2.exd3#
      • 1...dxc3
        • 2.Qf4#
      • 1...e5
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);OGATE::P(E),XS(a)
    • P(g);OGATEB,XP(G)::QAR(C)
    • P(g);OGATEB::QAR(C)
    • P(j);OGATEB::QAB(C)
  • Tries
    • Try
      • S(I);
      • Threat
        • R1(J)
      • Vars
        • R(c);N_GUARD,P_SPINR(c),XP(E)::S(I)
        • P(g);OGATEB,XP(G)::QAR(C)
        • P(j);OGATEB::QAB(C)
        • S(a);OGATE::P(E),XS(a)
      • Refutation
        • R(d);P_SPINR(d),XP(E)
    • Try
      • S(I);
      • Threat
        • R1(J)
      • Vars
        • R(d);P_SPINR(d),XP(E)::S(I)
        • P(g);OGATEB,XP(G)::QAR(C)
        • P(j);OGATEB::QAB(C)
        • S(a);OGATE::P(E),XS(a)
      • Refutation
        • R(c);P_SPINR(c),XP(E)
  • Actual
    • S(I);
    • Threat
      • R1(J)
    • Vars
      • R(c);N_GUARD,XP(E)::S(I)
      • R(d);XP(E)::S(I)
      • S(a);OGATE,XS(I)::P(E),XS(a)
      • P(g);OGATEB,XP(G)::QAR(C)
      • P(j);OGATEB::QAB(C)
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