MESON Chess Problem Database

Problem Display
PID: 160911 (8/3p4/3P4/8/3n1p2/4pk1K/4p2R/1Q2b2N w - - 0 1)

Dischler, Max

Leiss, Hans-Dieter

Die Schwalbe, 1981

8/3p4/3P4/8/3n1p2/4pk1K/4p2R/1Q2b2N

#2

5 + 7

6490 yacpdb 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qb7#
    • 1...Sf5
      • 2.Qb7#
    • 1...Se6
      • 2.Qb7#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Qe4#
      • 1...Bxg3
        • 2.Qh1#
      • 1...Sc2
        • 2.Qb7#
      • 1...fxg3!
    • 1.Rf2+?
      • 1...exf2
        • 2.Qd3#
      • 1...Bxf2!
    • 1.Qa2?
      • threat
        • 2.Qd5#
      • 1...Sb3
        • 2.Qa8#
      • 1...Ke4!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Qe4#
      • 1...Bxf2
        • 2.Qh1#
      • 1...exf2
        • 2.Qd3#
      • 1...Sc2
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(e);N_GUARD::QAB(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB1(A)
      • Vars
        • B(a);OGATE,XS(B)::QAB(A)
        • S(e);N_GUARD::QAB(A)
      • Refutation
        • P(f);XS(B)
    • Try
      • R(C);CHECK
      • Vars
        • P(c);S_CUTB(a),XR(C)::QAR2(A)
      • Refutation
        • B(a);XR(C)
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • S(e);N_GUARD::QAB(A)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAB1(A)
    • Vars
      • B(a);OGATE,XS(B)::QAB(A)
      • P(c);OGATEB,XS(B)::QAR2(A)
      • S(e);N_GUARD::QAB(A)
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