MESON Chess Problem Database

Problem Display
PID: 220393 (8/8/N1n5/8/K7/8/kpQ5/b7 w - - 0 1)

Torngren, Pehr Hendrik

Die Schwalbe, 1928

8/8/N1n5/8/K7/8/kpQ5/b7

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Sxb4#
    • 1...Sd4
      • 2.Sb4#
    • 1...Sa5
      • 2.Sb4#
    • 1...Se5
      • 2.Sb4#
    • 1...Sa7
      • 2.Sb4#
    • 1...Se7
      • 2.Sb4#
    • 1...Sb8
      • 2.Sb4#
    • 1...Sd8
      • 2.Sb4#
  • Keys
    • 1.Qd3!
      • 1...b1Q
        • 2.Qa3#
      • 1...b1S
        • 2.Qb3#
      • 1...b1B
        • 2.Qa3#
        • 2.Qb3#
      • 1...b1R
        • 2.Qa3#
      • 1...Sb4
        • 2.Sxb4#
      • 1...Sd4
        • 2.Sb4#
      • 1...Sa5
        • 2.Sb4#
      • 1...Se5
        • 2.Sb4#
      • 1...Sa7
        • 2.Sb4#
      • 1...Se7
        • 2.Sb4#
      • 1...Sb8
        • 2.Sb4#
      • 1...Sd8
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD::S(C),XS(d)
    • S(d);N_GUARD::S(C)
  • Actual
    • Q(A);N_PINP(c)
    • Vars
      • P(c);SBLOCK::QAR1(A)
      • P(c);::QAB1(A)
      • S(d);N_GUARD::S(C),XS(d)
      • S(d);N_GUARD::S(C)
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