MESON Chess Problem Database

Problem Display
PID: 227509 (8/B2p4/B4pN1/3k1Pp1/6P1/7p/7Q/7K w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

Tidskrift for Schack, 1916

8/B2p4/B4pN1/3k1Pp1/6P1/7p/7Q/7K

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Se7#
  • Tries
    • 1.Qg3?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc6
        • 2.Se7#
      • 1...d6
        • 2.Qf3#
      • 1...h2!
    • 1.Qf4?
      • threat
        • 2.Se7#
        • 2.Bb7#
      • 1...Kc6
        • 2.Se7#
      • 1...gxf4!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Se7#
        • 2.Qc5#
      • 1...fxe5!
    • 1.Qd6+?
      • 1...Ke4
        • 2.Bb7#
        • 2.Qd3#
      • 1...Kxd6!
    • 1.Qc2?
      • 1...Kd6
        • 2.Qc5#
      • 1...d6
        • 2.Bb7#
        • 2.Qc4#
      • 1...h2!
    • 1.Qd2+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc6!
  • Keys
    • 1.Kg1!
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc6
        • 2.Se7#
      • 1...d6
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::S(F)
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::S(F)
        • P(e);SBLOCK::QAB(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::S(F)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • P(d);XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • K(b);S_FLIGHT::QAB(B)
      • K(b);S_FLIGHT::S(F)
      • P(e);SBLOCK::QAB(B)
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Developed and maintained by Brian Stephenson.
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