MESON Chess Problem Database

Problem Display
PID: 223243 (8/4Q1p1/6p1/1B4pN/6kN/8/7K/8 w - - 0 1)

Strauss, M

Nashville Daily American, 1886

8/4Q1p1/6p1/1B4pN/6kN/8/7K/8

#2

5 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...gxh5
      • 2.Qb4#
      • 2.Qe4#
  • Tries
    • 1.Sg2?
      • 1...Kf3
        • 2.Qe2#
      • 1...Kf5
        • 2.Se3#
        • 2.Bd7#
      • 1...gxh5
        • 2.Qe4#
      • 1...Kxh5!
    • 1.Sf6+?
      • 1...Kf4
        • 2.Qe4#
      • 1...Kxh4
        • 2.Qe1#
      • 1...gxf6!
    • 1.Qe6+?
      • 1...Kxh4
        • 2.Qh3#
      • 1...Kxh5!
    • 1.Qd7+?
      • 1...Kxh4
        • 2.Qh3#
      • 1...Kxh5!
  • Keys
    • 1.Sf3!
      • 1...Kxf3
        • 2.Qe2#
      • 1...Kf5
        • 2.Bd7#
      • 1...Kxh5
        • 2.Qxg5#
      • 1...gxh5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • P(c);SBLOCK,XS(D)::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • K(a);P-FLIGHT,XS(B)::QAB(E)
      • Refutation
        • P(d);XS(D)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,XS(B)::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,XS(B)::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
  • Actual
    • S(B);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • K(a);S_FLIGHT::B(C)
      • K(a);S_FLIGHT,XS(D)::QAR1(E),XP(b)
      • P(c);SBLOCK,XS(D)::QAR2(E)
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