MESON Chess Problem Database

Problem Display
PID: 188473 (2KBbN1r/2npP1bP/2PNnk1p/7p/3p1P1P/8/8/QB6 w - - 0 1)

Battaglia, Emilio

The Problemist, 1980

2KBbN1r/2npP1bP/2PNnk1p/7p/3p1P1P/8/8/QB6

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh7
      • 2.Sxh7#
    • 1...Rxf8
      • 2.exf8Q#
      • 2.exf8R#
    • 1...Rg8
      • 2.hxg8S#
    • 1...Bxf8
      • 2.exf8Q#
    • 1...Bg6
      • 2.Sxd7#
      • 2.e8S#
    • 1...Bf7
      • 2.Sxd7#
      • 2.e8S#
    • 1...Sxf4
      • 2.Qxd4#
    • 1...Sc5
      • 2.Qxd4#
    • 1...Sg5
      • 2.Qxd4#
    • 1...Sxd8
      • 2.exd8Q#
      • 2.exd8B#
    • 1...Sxf8
      • 2.exf8S#
  • Tries
    • 1.Sxe8+?
      • 1...Kf7
        • 2.Bg6#
      • 1...Sxe8!
  • Keys
    • 1.cxd7!
      • 1...Bxd7+
        • 2.Sxd7#
      • 1...Rxh7
        • 2.Sxh7#
      • 1...Rxf8
        • 2.exf8Q#
        • 2.exf8R#
      • 1...Bxf8
        • 2.exf8Q#
      • 1...Sxf4
        • 2.Qxd4#
      • 1...Sxd8
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Sxf8
        • 2.exf8S#
      • 1...Sb5
        • 2.dxe8S#
      • 1...Rg8
        • 2.hxg8S#
      • 1...Bg6
        • 2.e8S#
      • 1...Bf7
        • 2.e8S#
      • 1...Sc5
        • 2.Qxd4#
      • 1...Sg5
        • 2.Qxd4#
      • 1...Sd5
        • 2.dxe8S#
      • 1...Sa6
        • 2.dxe8S#
      • 1...Sa8
        • 2.dxe8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(j);XP(H)::S(K),XR(j)
    • R(j);OGATE,XS(K)::PXR(j)=Q
    • R(j);OGATE::PXR(j)=S
    • B(h);OGATE,XS(K)::PXB(h)=Q
    • S(c);N_GUARD,XP(C)::QAB(A),XP(a)
    • S(c);N_GUARD::QAB(A),XP(a)
    • S(c);OGATE,XB(J)::PXS(c)=Q
    • S(c);OGATE,XS(K)::PXS(c)=S
  • Tries
    • Try
      • S(F);CHECK,XB(i)
      • Vars
        • K(d);N_SPINP(a),P-FLIGHT::B(B)
      • Refutation
        • S(f);XS(F)
  • Actual
    • P(E);XP(g)
    • Vars
      • B(i);CHECK,XP(E)::S(K),XB(i)
      • R(j);XP(H)::S(K),XR(j)
      • R(j);OGATE,XS(K)::PXR(j)=Q
      • B(h);OGATE,XS(K)::PXB(h)=Q
      • S(c);N_GUARD,XP(C)::QAB(A),XP(a)
      • S(c);OGATE,XB(J)::PXS(c)=Q
      • S(c);OGATE,XS(K)::PXS(c)=S
      • S(f);N_GUARD::PXB(i)=S
      • R(j);OGATE::PXR(j)=S
      • B(i);OGATE::P=S
      • S(c);N_GUARD::QAB(A),XP(a)
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