MESON Chess Problem Database

Problem Display
PID: 156656 (4b3/2N5/5p2/n1P1kp2/3pN1Rn/1p1Qp3/4K3/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Best Problems, 2007

4b3/2N5/5p2/n1P1kp2/3pN1Rn/1p1Qp3/4K3/8

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...fxe4
      • 2.Qxe4#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qxd4#
      • 1...fxg4
        • 2.Qe4#
      • 1...Sf3
        • 2.Sxf3#
      • 1...Sc6
        • 2.Sc4#
      • 1...f4
        • 2.Qe4#
      • 1...Bb5!
    • 1.Sg5?
      • threat
        • 2.Qxd4#
      • 1...fxg4
        • 2.Qe4#
      • 1...Bb5
        • 2.Sf7#
      • 1...Sf3
        • 2.Sxf3#
      • 1...f4
        • 2.Qe4#
      • 1...Sc6!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qxd4#
      • 1...fxg4
        • 2.Qe4#
      • 1...Bb5
        • 2.Sf7#
      • 1...Sf3
        • 2.Qxf5#
      • 1...Sc6
        • 2.Sc4#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(g);OGATE,XS(C)::QAR1(B),XP(g)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(B),XP(c)
      • Vars
        • P(g);N_GUARD,XR(D)::QAR1(B)
        • S(d);N_GUARD::S(C),XS(d)
        • S(e);N_GUARD::S(C)
        • P(g);N_GUARD::QAR1(B)
      • Refutation
        • B(i);P_PINQ(B)
    • Try
      • S(C);
      • Threat
        • QAB1(B),XP(c)
      • Vars
        • P(g);N_GUARD,XR(D)::QAR1(B)
        • B(i);N_GUARD,P_PINQ(B)::S(C)
        • S(d);N_GUARD::S(C),XS(d)
        • P(g);N_GUARD::QAR1(B)
      • Refutation
        • S(e);
  • Actual
    • S(C);
    • Threat
      • QAB1(B),XP(c)
    • Vars
      • P(g);N_GUARD,XR(D)::QAR1(B)
      • B(i);N_GUARD,P_PINQ(B)::S(C)
      • S(d);N_GUARD::QAR1(B),XP(g)
      • S(e);N_GUARD::S(C)
      • P(g);N_GUARD::QAR1(B)
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