MESON Chess Problem Database

Problem Display
PID: 63628 (5Q1K/1p2N3/1p4p1/q2Bk1pn/8/B2n1Pb1/4N3/1b1R4 w - - 0 1)

Ellerman, Arnoldo

1001 Problemas, 1945

5Q1K/1p2N3/1p4p1/q2Bk1pn/8/B2n1Pb1/4N3/1b1R4

#2

8 + 10

81 Chess 1946

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Qg7#
    • 1...Sf6
      • 2.Qb8#
    • 1...Sg7
      • 2.Qxg7#
  • Keys
    • 1.Bg8!
      • threat
        • 2.Sxg6#
      • 1...Sc5
        • 2.Rd5#
      • 1...Sc1
        • 2.Bd6#
      • 1...Se1
        • 2.Bd6#
      • 1...Sb2
        • 2.Bd6#
      • 1...Sf2
        • 2.Bd6#
      • 1...Sb4
        • 2.Bb2#
      • 1...Sdf4
        • 2.Bd6#
      • 1...Shf4
        • 2.Qg7#
      • 1...Sf6
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • S(g);N_GUARD::QAB(G)
    • S(g);SBLOCK::QAB(G)
    • S(g);N_GUARD::QAB(G),XS(g)
  • Actual
    • B(E);
    • Threat
      • S(F),XP(i)
    • Vars
      • S(b);OGATE::R1(A)
      • S(b);::B(C)
      • S(b);N_GUARD,S_CUTQ(d)::B(C)
      • S(g);N_GUARD::QAB(G)
      • S(g);SBLOCK::QAB(G)
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