MESON Chess Problem Database

Problem Display
PID: 232873 (1rn4b/4N3/1P2k3/6Q1/BB1nP3/3r4/3p4/3K4 w - - 0 1)

Morra, Juan Carlos

Il Due Mosse, 1956

1rn4b/4N3/1P2k3/6Q1/BB1nP3/3r4/3p4/3K4

#2

7 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Qd5#
    • 1...Sc2
      • 2.Qf5#
    • 1...Se2
      • 2.Qf5#
    • 1...Sb3
      • 2.Qf5#
    • 1...Sf3
      • 2.Qf5#
    • 1...Sb5
      • 2.Qf5#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sc6
      • 2.Qf5#
    • 1...Sxe7
      • 2.Qxe7#
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sd8#
      • 1...Kd7
        • 2.Sxd4#
      • 1...Kf7
        • 2.Sd8#
      • 1...Sxc6
        • 2.Qf5#
      • 1...Sxb6
        • 2.Qe7#
      • 1...Bf6
        • 2.Qd5#
      • 1...Sc2
        • 2.Qf5#
      • 1...Se2
        • 2.Qf5#
      • 1...Sb3
        • 2.Qf5#
      • 1...Sf3
        • 2.Qf5#
      • 1...Sb5
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sd6
        • 2.Qe7#
      • 1...Sa7
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(g);SBLOCK::QAB1(E)
    • S(c);N_GUARD::QAB1(E)
    • S(c);N_GUARD::QAB1(E),XS(c)
    • S(f);OGATE,XS(G)::QAR1(E),XS(f)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(d);S_FLIGHT::B(B)+S(G),XS(c)
      • K(d);S_FLIGHT::S(G)
      • S(c);N_GUARD,XS(G)::QAB1(E)
      • S(f);N_GUARD,XP(F)::QAR1(E)
      • B(g);SBLOCK::QAB1(E)
      • S(c);N_GUARD::QAB1(E)
      • S(c);N_GUARD::QAB1(E),XS(c)
      • S(f);N_GUARD::QAR1(E)
      • S(f);N_GUARD::QAR1(E),XS(f)
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