MESON Chess Problem Database

Problem Display
PID: 99168 (5B2/3p4/6B1/4kP2/1N5Q/8/3PnP2/K7 w - - 0 1)

Herland, Sigmund

Magyar Sakkvilag, 1912

5B2/3p4/6B1/4kP2/1N5Q/8/3PnP2/K7

#2

8 + 3

16336 Problemes choisis composes par Sigmund Herland (Yaremska-Iliescu) 2001
6490 yacpdb 2009
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.d4#
    • 1...Sg1
      • 2.d4#
    • 1...Sc3
      • 2.d4#
    • 1...Sg3
      • 2.d4#
    • 1...d5
      • 2.Sd3#
      • 2.Sc6#
    • 1...d6
      • 2.Bg7#
  • Tries
    • 1.Qe4+?
      • 1...Kf6
        • 2.Qe7#
      • 1...Kxe4!
    • 1.f3?
      • 1...Sf4
        • 2.Qh8#
      • 1...Sc1
        • 2.d4#
      • 1...Sg1
        • 2.d4#
      • 1...Sc3
        • 2.d4#
      • 1...Sg3
        • 2.d4#
      • 1...d5
        • 2.Sd3#
        • 2.Sc6#
      • 1...d6
        • 2.Bg7#
      • 1...Sd4!
  • Keys
    • 1.d3!
      • 1...Sf4
        • 2.Qh8#
      • 1...Sd4
        • 2.f4#
      • 1...Sc1
        • 2.d4#
      • 1...Sg1
        • 2.d4#
      • 1...Sc3
        • 2.d4#
      • 1...Sg3
        • 2.d4#
      • 1...d5
        • 2.Sc6#
      • 1...d6
        • 2.Bg7#

This anticipates 24689(1987)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::P(B)
    • P(c);SBLOCK::B(H)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
    • Try
      • P(C);
      • Vars
        • S(a);SBLOCK::QAB(E)
        • S(a);N_GUARD::P(B)
        • P(c);SBLOCK::B(H)
      • Refutation
        • S(a);
  • Actual
    • P(B);
    • Vars
      • S(a);SBLOCK::QAB(E)
      • S(a);N_GUARD,SBLOCK::P(C)
      • S(a);N_GUARD::P(B)
      • P(c);N_GUARD,SBLOCK::S(D)
      • P(c);SBLOCK::B(H)
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