MESON Chess Problem Database

Problem Display
PID: 259381 (5Q2/1R6/2B2n2/3q4/4k1P1/8/3BP1n1/7K w - - 0 1)

Pachl, Franz

Scacchi e Scienze Applicate, 1987

5Q2/1R6/2B2n2/3q4/4k1P1/8/3BP1n1/7K

#2

7 + 4

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qd6?
      • threat
        • 2.Rb4#
      • 1...Kd4
        • 2.Rb4#
      • 1...Qxc6
        • 2.Re7#
      • 1...Sxg4
        • 2.Qxd5#
      • 1...Se3!
    • 1.Qxf6?
      • threat
        • 2.Rb4#
        • 2.Re7#
      • 1...Se3
        • 2.Re7#
      • 1...Sf4
        • 2.Rb4#
        • 2.Qxf4#
      • 1...Qxc6!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Re7#
      • 1...Ke5
        • 2.Re7#
      • 1...Qxc6
        • 2.Rb4#
      • 1...Sxg4
        • 2.Qxd5#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sf4
        • 2.Qe3#
      • 1...Sd7
        • 2.Qxd5#
      • 1...Sg8
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);
      • Threat
        • R(F)
      • Vars
        • K(b);P-FLIGHT::R(F)
        • Q(c);N_SPINQ(c),XB(E)::R(F)
        • S(d);N_GUARD,XP(D)::QAB1(G),XQ(c)
      • Refutation
        • S(a);
    • Try
      • Q(G);XS(d)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::R(F)
      • Refutation
        • Q(c);N_SPINQ(c),XB(E)
  • Actual
    • Q(G);
    • Threat
      • R(F)
    • Vars
      • K(b);P-FLIGHT::R(F)
      • Q(c);N_SPINQ(c),XB(E)::R(F)
      • S(d);N_GUARD,XP(D)::QAB1(G),XQ(c)
      • S(a);N_GUARD::QAR1(G),XS(a)
      • S(a);N_GUARD::QAR1(G)
      • S(d);N_GUARD::QAB1(G),XQ(c)
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