MESON Chess Problem Database

Problem Display
PID: 115227 (3n1Q2/3bnq2/1N1kN1R1/3B4/4Rb2/8/8/BK6 w - - 0 1)

Boros, Sandor

Hietzing Chess Club, 1931

3n1Q2/3bnq2/1N1kN1R1/3B4/4Rb2/8/8/BK6

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg6
      • 2.Qxf4#
    • 1...Qe8
      • 2.Qxf4#
    • 1...Qg8
      • 2.Qxf4#
    • 1...Qh7
      • 2.Qxf4#
    • 1...Bc1
      • 2.Be5#
    • 1...Bd2
      • 2.Be5#
    • 1...Be3
      • 2.Be5#
    • 1...Be5
      • 2.Bxe5#
    • 1...Bg5
      • 2.Be5#
    • 1...Bh6
      • 2.Be5#
    • 1...Sb7
      • 2.Qb8#
  • Keys
    • 1.Bd4!
      • threat
        • 2.Bc5#
      • 1...Qxe6
        • 2.Qxf4#
      • 1...Bxe6
        • 2.Qxd8#
      • 1...Sxe6
        • 2.Qb8#
      • 1...Be3
        • 2.Be5#
      • 1...Sb7
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(e);OGATE,P_PINR(C),XR(G)::QAB(H),XB(a)
    • Q(e);OGATE::QAB(H),XB(a)
    • B(a);N_GUARD::B(A)
    • B(a);N_GUARD::B(A),XB(a)
    • S(f);OGATE::QAB(H)
  • Actual
    • B(A);
    • Threat
      • B(A)
    • Vars
      • Q(e);OGATE,P_SPINQ(e),XS(F)::QAB(H),XB(a)
      • B(c);OGATEB,P_SPINB(c),XS(F)::QAR2(H),XS(f)
      • S(f);N_SPINS(d),OGATE,P_SPINS(f),XS(F)::QAB(H)
      • B(a);N_GUARD::B(A)
      • S(f);OGATE::QAB(H)
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