MESON Chess Problem Database

Problem Display
PID: 15973 (1b2B3/3pp3/4kr2/2Q2nP1/3p4/1K1N4/8/8 w - - 0 1)

Lewis, Robert Tony

Correspondence Chess, 2000

1b2B3/3pp3/4kr2/2Q2nP1/3p4/1K1N4/8/8

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Sxf4#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bd6
      • 2.Qc4#
    • 1...Ba7
      • 2.Sf4#
      • 2.Qe5#
    • 1...Sd6
      • 2.Qe5#
    • 1...d6
      • 2.Sf4#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...Se3!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qxd7#
      • 1...Kd6
        • 2.Qxd7#
      • 1...Bd6
        • 2.Qc4#
      • 1...Sd6
        • 2.Qe5#
      • 1...d5
        • 2.Qd7#
      • 1...d6
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(g);N_GUARD::S(B),XB(g)
    • B(g);N_GUARD::QAR1(C),XB(g)
    • B(g);SBLOCK,S_CUTP(e)::QAB(C)
    • S(b);S_CUTB(g)::QAR1(C)
    • P(e);S_CUTB(g)::S(B)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB1(C)
      • Vars
        • P(e);::QAB1(C),XP(e)
      • Refutation
        • S(b);
  • Actual
    • Q(C);
    • Threat
      • QAB1(C),XP(e)
    • Vars
      • K(c);P-FLIGHT::QAR1(C),XP(e)
      • B(g);SBLOCK,S_CUTP(e)::QAB(C)
      • S(b);S_CUTB(g)::QAR1(C)
      • P(e);::QAB1(C)
      • P(e);SBLOCK,S_CUTB(g)::S(B)
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