MESON Chess Problem Database

Problem Display
PID: 145591 (4K3/1N1RnR1N/1p5B/3PpP2/4k3/3p1p2/1Q2n3/4r3 w - - 0 1)

Paluzie y Lucena, Jozefo

Good Companions (October), 1917

4K3/1N1RnR1N/1p5B/3PpP2/4k3/3p1p2/1Q2n3/4r3

#2

9 + 8

5454 Near Snap 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qb4#
    • 1...Sg1
      • 2.Qb4#
    • 1...Sc3
      • 2.Qb4#
    • 1...Sg3
      • 2.Qb4#
    • 1...Sxd5
      • 2.Sd6#
    • 1...Sxf5
      • 2.Sf6#
    • 1...b5
      • 2.Sc5#
  • Tries
    • 1.Bd2?
      • threat
        • 2.Sg5#
      • 1...Sc3
        • 2.Qb4#
      • 1...Rg1!
  • Keys
    • 1.Qxb6!
      • threat
        • 2.Qe3#
      • 1...Sxd5
        • 2.Sd6#
      • 1...Sxf5
        • 2.Sf6#
      • 1...Sc1
        • 2.Qb4#
      • 1...Sg1
        • 2.Qb4#
      • 1...Sc3
        • 2.Qb4#
      • 1...Sg3
        • 2.Qb4#
      • 1...Sd4
        • 2.Sc5#
      • 1...Sf4
        • 2.Sg5#

This anticipates 145225(1920), 81901(1953)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::QAR(A)
    • S(h);SBLOCK,XP(B)::S(E)
    • S(h);SBLOCK,XP(C)::S(H)
    • P(g);N_GUARD::S(E)
  • Tries
    • Try
      • B(D);
      • Threat
        • S(H)
      • Vars
        • S(b);N_GUARD::QAR(A)
      • Refutation
        • R(a);
  • Actual
    • Q(A);XP(g)
    • Threat
      • QAR1(A)
    • Vars
      • S(h);SBLOCK,XP(B)::S(E)
      • S(h);SBLOCK,XP(C)::S(H)
      • S(b);N_GUARD::QAR(A)
      • S(b);SBLOCK::S(E)
      • S(b);SBLOCK::S(H)
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