MESON Chess Problem Database

Problem Display
PID: 263580 (K1NB4/8/R5N1/3p1kP1/6q1/3Pn1R1/Q3p3/8 w - - 0 1)

Brogi, Giuseppe

Prete, Rodolfo

Skakbladet, 1966

K1NB4/8/R5N1/3p1kP1/6q1/3Pn1R1/Q3p3/8

#2

9 + 5

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Sce7#
      • 2.Rf6#
    • 1...Qh3
      • 2.Sce7#
      • 2.Rf6#
    • 1...Qh5
      • 2.Sce7#
      • 2.Rf6#
    • 1...Qa4
      • 2.Sce7#
    • 1...Qb4
      • 2.Rf6#
    • 1...Qc4
      • 2.Sce7#
      • 2.Rf6#
    • 1...Qd4
      • 2.Sce7#
    • 1...Qe4
      • 2.Rf6#
    • 1...Qf4
      • 2.Sce7#
      • 2.Rf6#
    • 1...Qh4
      • 2.Sce7#
      • 2.Rf6#
    • 1...Qxg5
      • 2.Rxg5#
    • 1...Sd1
      • 2.Qxd5#
    • 1...Sf1
      • 2.Qxd5#
    • 1...Sc2
      • 2.Qxd5#
    • 1...Sg2
      • 2.Qxd5#
    • 1...d4
      • 2.Qe6#
      • 2.Qf7#
  • Tries
    • 1.Rf3+?
      • 1...Qf4
        • 2.Rxf4#
      • 1...Qxf3!
    • 1.Qa3?
      • threat
        • 2.Qf8#
      • 1...Qxg5
        • 2.Rxg5#
      • 1...Qb4
        • 2.Rf6#
      • 1...Qd4
        • 2.Sce7#
      • 1...Qxg3!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qd7#
      • 1...Qxa4
        • 2.Sce7#
      • 1...Qe4
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(c);P_PINR(E)::S(H)
    • Q(c);::R1(E)
    • Q(c);::S(H)
    • Q(c);OGATE,XP(D)::R1(C),XQ(c)
    • S(b);N_GUARD::QAR2(A),XP(d)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::R1(C),XQ(c)
      • Refutation
        • Q(c);XR(C)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • Q(c);OGATE,XP(D)::R1(C),XQ(c)
        • Q(c);::R1(E)
        • Q(c);::S(H)
      • Refutation
        • Q(c);XR(C)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • Q(c);P_PINR(E),XQ(A)::S(H)
      • Q(c);::R1(E)
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