MESON Chess Problem Database

Problem Display
PID: 177831 (8/5p2/7N/2KnkBBp/4pp2/8/2n3b1/4NQ2 w - - 0 1)

Gelpernas, Boris

Leun, Evgeny

Veders, Visvaldis M

2nd Comm., Sahs (Latvia), 1983

8/5p2/7N/2KnkBBp/4pp2/8/2n3b1/4NQ2

#2

6 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Qxf4#
    • 1...Se3
      • 2.Qxf4#
    • 1...Sb4
      • 2.Qxf4#
    • 1...Sb6
      • 2.Qxf4#
    • 1...Sf6
      • 2.Bxf4#
      • 2.Qxf4#
    • 1...Sc7
      • 2.Qxf4#
    • 1...Se7
      • 2.Qxf4#
    • 1...e3
      • 2.Sd3#
  • Tries
    • 1.Bd7?
      • threat
        • 2.Sxf7#
      • 1...f5
        • 2.Sf7#
      • 1...f6
        • 2.Sf7#
      • 1...e3!
    • 1.Bc8?
      • threat
        • 2.Sxf7#
      • 1...f5
        • 2.Sf7#
      • 1...f6
        • 2.Sf7#
      • 1...e3!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qxd5#
      • 1...exd3
        • 2.Sxd3#
      • 1...Sce3
        • 2.Qd4#
      • 1...Scb4
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc3
        • 2.Qd6#
      • 1...Sde3
        • 2.Qd6#
      • 1...Sdb4
        • 2.Qd6#
      • 1...Sb6
        • 2.Qd6#
      • 1...Sf6
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...Se7
        • 2.Qd6#
      • 1...e3
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::QAB1(B),XP(d)
    • P(c);N_GUARD::S(A)
  • Tries
    • Try
      • B(D);
      • Threat
        • S(F),XP(h)
      • Vars
        • P(h);::S(F)
      • Refutation
        • P(c);
    • Try
      • B(D);
      • Threat
        • S(F),XP(h)
      • Vars
        • P(h);::S(F)
      • Refutation
        • P(c);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XS(e)
    • Vars
      • P(c);XQ(B)::S(A),XP(c)
      • S(a);N_GUARD::QAB1(B)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • S(e);OGATE::QAB1(B)
      • P(c);::S(F),XP(h)
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