MESON Chess Problem Database

Problem Display
PID: 15787 (2Q4b/3p1PrP/1p1Bk1p1/2Pn2K1/1n2N1P1/8/4B3/4R3 w - - 0 1)

Djurasevic, Branislav

2nd HM., The Problemist, 1987

2Q4b/3p1PrP/1p1Bk1p1/2Pn2K1/1n2N1P1/8/4B3/4R3

#2

10 + 8

721 Variantim 1990
15526 Svi Moji Sahovski Problemi (Djurasevic) 1992
3297 FIDE Album (1986-1988) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Rg8
      • 2.fxg8Q#
      • 2.fxg8B#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Qe8#
      • 1...Kxf7
        • 2.Qxd7#
      • 1...Rxf7
        • 2.Sf6#
      • 1...Rg8
        • 2.fxg8Q#
        • 2.fxg8B#
      • 1...Sc6!
    • 1.Qg8?
      • threat
        • 2.f8S#
      • 1...Rxg8
        • 2.fxg8Q#
        • 2.fxg8B#
      • 1...Rxf7!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qxd7#
      • 1...Kxf7
        • 2.Qe8#
      • 1...Rxf7
        • 2.Bc4#
      • 1...Sxf6
        • 2.Bc4#
      • 1...Se7
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(g);OGATE::PXR(g)=Q
  • Tries
    • Try
      • B(B);P_PINS(b)
      • Threat
        • QAR2(J)
      • Vars
        • K(d);N_SPINP(f),S_FLIGHT,XP(H)::QAR2(J),XP(f)
        • R(g);SBLOCK,XP(H)::R(A)+S(C)
        • R(g);OGATE::PXR(g)=Q
      • Refutation
        • S(a);
    • Try
      • Q(J);N_PINP(f)
      • Threat
        • P=S
      • Vars
        • R(g);OGATE,XQ(J)::PXR(g)=Q
      • Refutation
        • R(g);P_SPINR(g),XP(H)
  • Actual
    • S(C);
    • Threat
      • QAB1(J),XP(f)
    • Vars
      • K(d);N_SPINP(f),S_FLIGHT,XP(H)::QAB1(J)
      • R(g);SBLOCK,XP(H)::R(A)+B(B)
      • S(b);XS(C)::R(A)+B(B),DCHECK
      • S(b);::R(A)+B(B),DCHECK
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