MESON Chess Problem Database

Problem Display
PID: 215969 (5b2/2N1p3/1P1k4/4p3/B1n5/3N4/7Q/K7 w - - 0 1)

Uhler, Ekkehard

Badische Neueste Nachrichten, 1982

5b2/2N1p3/1P1k4/4p3/B1n5/3N4/7Q/K7

#2

6 + 5

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qxe5#
    • 1...Sd2
      • 2.Qxe5#
    • 1...Sa3
      • 2.Qxe5#
    • 1...Se3
      • 2.Qxe5#
    • 1...Sa5
      • 2.Qxe5#
    • 1...Sxb6
      • 2.Qxe5#
  • Tries
    • 1.Qb2?
      • threat
        • 2.Qb4#
      • 1...Sxb6
        • 2.Qxe5#
        • 2.Qxb6#
      • 1...Sxb2!
    • 1.Qh3?
      • threat
        • 2.Qe6#
        • 2.Qd7#
      • 1...e6
        • 2.Qxe6#
      • 1...Sxb6!
    • 1.Qh6+?
      • 1...e6
        • 2.Qxf8#
        • 2.Qxe6#
      • 1...Bxh6!
  • Keys
    • 1.Qh8!
      • 1...Sxb6
        • 2.Qxe5#
      • 1...e6
        • 2.Qxf8#
      • 1...Bh6
        • 2.Qd8#
      • 1...Bg7
        • 2.Qd8#
      • 1...Sb2
        • 2.Qxe5#
      • 1...Sd2
        • 2.Qxe5#
      • 1...Sa3
        • 2.Qxe5#
      • 1...Se3
        • 2.Qxe5#
      • 1...Sa5
        • 2.Qxe5#
      • 1...e4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(B),XP(b)
    • S(a);N_GUARD,XP(E)::QAB1(B),XP(b)
  • Tries
    • Try
      • Q(B);N_PINP(b)
      • Threat
        • QAB(B)
      • Refutation
        • S(a);XQ(B)
    • Try
      • Q(B);N_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::QAR1(B),XP(d)
      • Refutation
        • S(a);XP(E)
    • Try
      • Q(B);CHECK,N_PINP(b)
      • Refutation
        • B(e);XQ(B)
  • Actual
    • Q(B);N_PINP(b)
    • Vars
      • S(a);N_GUARD,XP(E)::QAB1(B),XP(b)
      • P(d);OGATEB::QAB(B),XB(e)
      • B(e);OGATE::QAR2(B)
      • S(a);N_GUARD::QAB1(B),XP(b)
      • P(b);OGATE::QAR2(B)
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