MESON Chess Problem Database

Problem Display
PID: 95407 (8/2K1p1pQ/1P2N3/2pk4/P1N1r3/2B2Rn1/8/1B6 w - - 0 1)

Kisis, Imants J

Sachsische Zeitung, 1987

8/2K1p1pQ/1P2N3/2pk4/P1N1r3/2B2Rn1/8/1B6

#2

9 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Ba2#
    • 1...Kxe6
      • 2.Qg8#
    • 1...Rxe6
      • 2.Qd3#
    • 1...Sf1
      • 2.Qxe4#
    • 1...Sh1
      • 2.Qxe4#
    • 1...Se2
      • 2.Qxe4#
    • 1...Sh5
      • 2.Qxe4#
  • Tries
    • 1.Se3+?
      • 1...Kxe6
        • 2.Qg6#
        • 2.Qg8#
      • 1...Rxe3!
    • 1.Sf4+?
      • 1...Kxc4
        • 2.Ba2#
      • 1...Rxf4!
    • 1.Ba2?
      • threat
        • 2.Se3#
      • 1...Kxe6
        • 2.Qg8#
      • 1...Rxc4
        • 2.Sf4#
      • 1...Re3
        • 2.Sxe3#
        • 2.Sf4#
      • 1...Rd4!
    • 1.Qf5+?
      • 1...Kxc4
        • 2.Ba2#
      • 1...Re5
        • 2.Se3#
      • 1...Sxf5!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Sf4#
      • 1...Kxc4
        • 2.Ba2#
      • 1...Rxe6
        • 2.Se3#
      • 1...Rf4
        • 2.Se3#
        • 2.Sxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • K(d);OGATEB,S_FLIGHT,XS(E)::B(A)
    • K(d);OGATEB,S_FLIGHT,XS(G)::QAB(I)
    • R(b);OGATE,SBLOCK,XS(G)::QAR2(I)
    • S(a);N_GUARD::QAB1(I),XR(b)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • R(b);XS(E)
    • Try
      • S(G);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(E)::B(A)
      • Refutation
        • R(b);XS(G)
    • Try
      • B(A);
      • Threat
        • B(A)+S(E),DCHECK
      • Vars
        • K(d);OGATEB,S_FLIGHT,XS(G)::QAB(I)
        • R(b);N_GUARD,P_SPINR(b),XS(E)::S(G)
      • Refutation
        • R(b);
    • Try
      • Q(I);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(E)::B(A)
        • R(b);P_SPINR(b)::S(E)
      • Refutation
        • S(a);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)+S(G),DCHECK
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(E)::B(A)
      • R(b);N_GUARD,P_SPINR(b),XS(G)::S(E)
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