MESON Chess Problem Database

Problem Display
PID: 203564 (2b5/8/8/7r/2p5/8/6Q1/k1Kn4 w - - 0 1)

Massmann, Wilhelm Karl Heinrich

Allgemeine Zeitung Chemnitz, 1924

2b5/8/8/7r/2p5/8/6Q1/k1Kn4

#2

2 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Qa8#
    • 1...Sb2
      • 2.Qxb2#
    • 1...Sc3
      • 2.Qb2#
    • 1...Se3
      • 2.Qb2#
  • Tries
    • 1.Qa8+?
      • 1...Ra5
        • 2.Qxa5#
      • 1...Ba6!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qb1#
        • 2.Qa4#
      • 1...Sb2
        • 2.Qb1#
        • 2.Qxb2#
      • 1...Rh2
        • 2.Qb1#
      • 1...Rh3
        • 2.Qb1#
      • 1...Ra5
        • 2.Qb1#
      • 1...Rb5
        • 2.Qa4#
      • 1...Bf5
        • 2.Qa4#
      • 1...Bd7
        • 2.Qb1#
      • 1...Sc3
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • B(e);N_GUARD,S_CUTR(d)::QAB(B)
    • S(b);N_GUARD::QAB1(B),XS(b)
    • S(b);N_GUARD::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::QAR(B),XR(d)
      • Refutation
        • B(e);P_SPINB(e)
  • Actual
    • Q(B);
    • Threat
      • DUALS(2)
    • Vars
      • R(d);::QAR1(B)
      • R(d);::QAR(B)
      • B(e);::QAR(B)
      • B(e);::QAR1(B)
      • S(b);N_GUARD::QAB1(B)
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