MESON Chess Problem Database

Problem Display
PID: 252992 (K2R1B1r/3PNNQ1/4k2r/p1np1p1p/3R1p2/8/3n2b1/2q4B w - - 0 1)

Mariani, Stefano

Probleemblad, 1983

K2R1B1r/3PNNQ1/4k2r/p1np1p1p/3R1p2/8/3n2b1/2q4B

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rg6
      • 2.Qxg6#
    • 1...R6h7
      • 2.Qg6#
    • 1...Bf1
      • 2.Bxd5#
    • 1...Bh3
      • 2.Bxd5#
  • Tries
    • 1.Sxd5?
      • threat
        • 2.Sg5#
      • 1...Bxd5+
        • 2.Bxd5#
      • 1...Rf6
        • 2.Qxf6#
      • 1...Rg6
        • 2.Qxg6#
      • 1...Sf3
        • 2.Sc7#
      • 1...Sde4
        • 2.Sc7#
      • 1...Sce4
        • 2.Sxf4#
      • 1...Rxf8!
    • 1.Qxh6+?
      • 1...Kxf7
        • 2.Qg6#
      • 1...Rxh6!
  • Keys
    • 1.Rxd5!
      • threat
        • 2.Sg5#
      • 1...Bxd5+
        • 2.Bxd5#
      • 1...Sf3
        • 2.Rd6#
      • 1...Rg6
        • 2.Qxg6#
      • 1...Sde4
        • 2.Re5#
      • 1...Sce4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(k);N_GUARD::QAR2(F),XR(k)
    • R(k);N_GUARD::QAR2(F)
    • B(c);OGATE::B(A),XP(g)
  • Tries
    • Try
      • S(D);P_SPINS(D),XP(g)
      • Threat
        • S(E)
      • Vars
        • B(c);CHECK,OGATE,XS(D)::B(A),XB(c)
        • R(k);N_GUARD::QAR1(F),XR(k)
        • R(k);N_GUARD::QAR2(F),XR(k)
        • S(b);N_PINS(D)::S(D)
        • S(f);N_PINS(D)::S(D),XP(d)
      • Refutation
        • R(l);P_PINR(H),XB(I)
    • Try
      • Q(F);CHECK,XR(k)
      • Vars
        • K(j);S_FLIGHT,XS(E)::QAB1(F)
      • Refutation
        • R(l);XQ(F)
  • Actual
    • R(B);P_SPINR(B),XP(g)
    • Threat
      • S(E)
    • Vars
      • B(c);CHECK,OGATE,XR(B)::B(A),XB(c)
      • S(b);N_PINR(B)::R1(B)
      • R(k);N_GUARD::QAR2(F),XR(k)
      • S(f);N_PINR(B)::R1(B)
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