MESON Chess Problem Database

Problem Display
PID: 146109 (3N3K/n1N1ppQ1/1p6/2k5/1p1R2n1/1pbP4/8/2R4b w - - 0 1)

Drese, Gerardus Hendrikus

Aachener Anzeiger, 1931

3N3K/n1N1ppQ1/1p6/2k5/1p1R2n1/1pbP4/8/2R4b

#2

7 + 10

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Rxd5#
    • 1...Sb5
      • 2.Sa6#
    • 1...Sc6
      • 2.Sb7#
  • Tries
    • 1.Qe5+?
      • 1...Bd5
        • 2.Rc4#
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Sxe5!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Qd4#
      • 1...Bd5
        • 2.Rxd5#
      • 1...Se5
        • 2.Qg1#
      • 1...Sf6
        • 2.Qg1#
      • 1...Sb5
        • 2.Sa6#
      • 1...Sc6
        • 2.Sb7#
      • 1...e5
        • 2.Qf8#
      • 1...f6
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::R1(C),XB(a)
    • S(h);SBLOCK::S(D)
    • S(h);SBLOCK,S_CUTB(a)::S(F)
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • S(e);XQ(E)
  • Actual
    • R(C);P_SPINQ(E)
    • Threat
      • QAB1(E)
    • Vars
      • B(a);N_GUARD::R1(C),XB(a)
      • S(e);N_PINQ(E)::QAB(E)
      • S(h);SBLOCK::S(D)
      • S(h);SBLOCK,S_CUTB(a)::S(F)
      • P(i);N_PINQ(E)::QAB(E)
      • P(j);N_PINQ(E)::QAB(E),XP(i)
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