MESON Chess Problem Database

Problem Display
PID: 269581 (8/3pQ3/7n/4pk1K/8/4bB1N/4P3/8 w - - 0 1)

Paslack, Rainer

Mainzer Allgemeine Zeitung, 1992

8/3pQ3/7n/4pk1K/8/4bB1N/4P3/8

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.e4#
    • 1...Bg1
      • 2.e4#
    • 1...Bd2
      • 2.e4#
    • 1...Bf2
      • 2.e4#
    • 1...Bd4
      • 2.e4#
    • 1...Bf4
      • 2.e4#
    • 1...Bc5
      • 2.e4#
    • 1...Bg5
      • 2.e4#
    • 1...Bb6
      • 2.e4#
    • 1...Ba7
      • 2.e4#
    • 1...Sf7
      • 2.Qxf7#
    • 1...e4
      • 2.Bxe4#
  • Tries
    • 1.Qf8+?
      • 1...Sf7
        • 2.Qxf7#
      • 1...Ke6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qg5#
      • 1...Kxf4
        • 2.Qg5#
      • 1...Bxf4
        • 2.e4#
      • 1...exf4
        • 2.Be4#
      • 1...Sf7
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • B(a);OGATE::P(A)
    • S(d);N_GUARD::QAR2(E),XS(d)
    • P(b);::B(B),XP(b)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::QAR2(E),XS(d)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAR1(E)
    • Vars
      • K(c);P-FLIGHT,XS(C)::QAB1(E)
      • B(a);OGATE,SBLOCK,XS(C)::P(A)
      • P(b);SBLOCK,XS(C)::B(B)
      • S(d);N_GUARD::QAR2(E),XS(d)
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